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CN107988635B - Full-dull polyester-polyester composite yarn and preparation method thereof - Google Patents

Full-dull polyester-polyester composite yarn and preparation method thereof Download PDF

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Publication number
CN107988635B
CN107988635B CN201711340287.2A CN201711340287A CN107988635B CN 107988635 B CN107988635 B CN 107988635B CN 201711340287 A CN201711340287 A CN 201711340287A CN 107988635 B CN107988635 B CN 107988635B
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spinneret
full
pet
polyester
dull
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CN107988635A (en
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尹立新
张烨
陈瑞
王力军
张群
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Jiangsu Hengli Chemical Fiber Co Ltd
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Jiangsu Hengli Chemical Fiber Co Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
    • D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/11—Compounds containing epoxy groups or precursors thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
    • D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • D06M13/295—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof containing polyglycol moieties; containing neopentyl moieties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Multicomponent Fibers (AREA)

Abstract

The invention relates to a full-dull polyester-polyester composite yarn and a preparation method thereof, wherein the preparation method comprises the following steps: metering, extruding by a composite spinneret plate, cooling, oiling and winding the delustered PET melt and the bright PET melt to obtain POY (polyester pre-oriented yarn), and preparing DTY (draw textured yarn), namely full-delustered polyester-polyester composite filament, from the POY filament by a filament guide pipe, a network, heating and stretching, false twisting, heat setting and winding, wherein an oiling agent for oiling contains crown ether, and the content of the crown ether is 67.30-85.58 wt%; a bundle of full-dull polyester composite filaments extruded by the same spinneret plate simultaneously contains dull PET monofilaments and large bright PET monofilaments in which matte agents are dispersed, wherein the matte agents are mixtures of amorphous titanium dioxide and amorphous silicon dioxide or mixtures of calcium carbonate and amorphous silicon dioxide, and the glossiness of the composite filaments is less than 20%. The preparation method is simple, the smooth spinning of the fibers is realized in the preparation process, and the fabric processed by the method has excellent performance and great application value.

Description

Full-dull polyester-polyester composite yarn and preparation method thereof
Technical Field
The invention belongs to the field of fiber preparation, and relates to a full-dull polyester-polyester composite yarn and a preparation method thereof.
Background
With the development of modern textile technology and the increasing living standard of people, people put forward higher requirements on the yield, performance and quality of chemical fibers adopted by clothes, decoration and industrial textiles, so in recent years, researchers are dedicated to research and development of new varieties of chemical fibers to meet the market demand of people on fibers with high added value.
At present, the consumer market has the demands for high-sensitivity and high-functionality textiles, and in order to meet the demands, the traditional fiber manufacturing needs to be reformed, and high-function fibers, high-sensitivity fibers, intelligent fibers, degradable fibers and the like are developed so as to improve the technological content of the textiles and the life quality of people. The development of the different-component composite yarn is an important means for realizing high sensitivity and high functionality of the fiber. The foreign component composite filament production technology at home and abroad develops fast in the production of short fibers and long fibers, is mainly applied to the production of heat bonding non-woven fabrics used in the sanitary field, and has good fluffiness, crimpability and softness.
The different-component composite filament is a chemical fiber spun by extruding different polymer melts through a spinneret plate, and the composite filament spun by extruding the melts of the polymers through the spinneret plate with the same plate profile can integrate the advantages of the fibers, so that the composite filament with excellent comprehensive performance is prepared. However, the production of different-component composite filaments is difficult, because the polymer melt for spinning is a non-newtonian fluid, i.e. a viscoelastic fluid, which undergoes elastic deformation while flowing viscously in the spinneret holes to form a certain pressure, the polymer melt will generate a certain pressure drop after exiting the spinneret holes, and the shape, size, length and mutual relationship of the spinneret holes will have a great influence on the pressure drop The phenomena of uneven strength, uneven dyeing and the like affect the smooth operation of fiber spinning processing.
Polyethylene terephthalate (PET) is a polymer with excellent performance, and the PET has the advantages of high modulus, high strength, good shape retention, good barrier property and the like, so that the PET is widely applied to the fields of fibers, bottle packaging, films, sheets and the like, the yield is increased year by year, and the industrial position is remarkably improved. The lustre of the delustered PET fibers is soft, and the prepared fabric has good draping feeling, generally by adding TiO2The delustering agent is prepared, the bright PET fiber is transparent and bright, and the prepared fabric is beautiful and elegant and has a mysterious color. However, the performance of the single delustering PET fiber or the big lustrous PET fiber still cannot meet the requirement of consumers, and how to overcome the difficulty in the production and processing of the different-component composite yarn to realize the composite preparation of the delustering PET fiber and the big lustrous PET fiber and the full delustering polyester composite yarn which has the advantages of both the delustering PET fiber and the big lustrous PET fiber becomes the problem to be solved at present.
Disclosure of Invention
The invention aims to overcome the defects of extinction PET fibers or bright PET fibers prepared by the prior art and provide the full-extinction polyester composite filament which has the advantages of both the extinction PET fibers and the bright PET fibers and the preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains dull PET monofilament and big bright PET monofilament;
matte agents are dispersed in the delustering PET monofilaments and the large lustrous PET monofilaments, and the matte agents are mixtures of amorphous titanium dioxide and amorphous silicon dioxide or mixtures of calcium carbonate and amorphous silicon dioxide; the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, or a mixture of calcium carbonate and amorphous silicon dioxide, and the matting agent is added into the polyester in the invention because: pure PET fiber, because the surface glossiness is very high, usually translucent, its glossiness is not only determined by surface reflection light, but also related to transmitted light, meanwhile the fiber glossiness is also influenced by factors such as fiber surface state, fiber cross section shape and fiber internal structure, for example, the fiber with good macromolecule orientation degree, internal structure is more uniform, fiber reflection light intensity, glossiness is bright, therefore, can adjust and control the fiber glossiness through adding inorganic particle extinction or through adjusting fiber cross section shape and surface structure. In order to make the gloss of PET fiber approach to that of cotton fiber, a delustering agent can be added in the polymerization process, the common polyester delustering agent is anatase type titanium dioxide, in order to reduce the influence of anatase type titanium dioxide crystals on the gloss of polyester, a mixture of amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and amorphous silicon dioxide is adopted as inorganic matte particles, the inorganic particles are uniformly dispersed in the PET, and the crystallization and orientation of the PET are damaged, so that the surface of the fiber is in a matte state;
the glossiness of the full-dull polyester-polyester composite yarn is less than 20%.
As a preferred technical scheme:
the full dull polyester-polyester composite filament has the fineness of 0.50-0.70 dtex and the fineness of 0.30-0.40 dtex.
The full-dull polyester composite yarn has the fineness of 75-150 dtex, the breaking strength of more than or equal to 2.0cN/dtex, the elongation at break of 22.0 +/-2.0 percent, the crimp shrinkage of less than or equal to 9.0 percent, the linear density deviation rate of less than or equal to 2.0 percent, the breaking strength CV value of less than or equal to 7.0 percent, the elongation at break CV value of less than or equal to 8.0 percent, the crimp shrinkage variation coefficient CV value of less than or equal to 8.5 percent, the boiling water shrinkage of 3.5 +/-0.5 percent and the full-curl rate of more than or equal to 98 percent.
The content of the matte agent in the dull PET monofilament or the bright PET monofilament is 1.5-2.0 wt%, and the content of the amorphous silicon dioxide in the matte agent is 15-30 wt%.
The invention also provides a method for preparing the full-dull polyester-polyester composite yarn, which comprises the steps of carrying out metering, composite spinneret plate extrusion, cooling, oiling and winding on a dull PET melt and a big bright PET melt to prepare POY (polyester-polyester) yarns, and carrying out yarn guide pipe, network, heating and stretching, false twisting, heat setting and winding forming on the POY yarns to prepare DTY (draw textured yarn), namely the full-dull polyester-polyester composite yarn;
the matte agent is dispersed in the delustering PET melt and the big lustrous PET melt;
the composite spinneret plate is simultaneously provided with two different spinneret orifices A and B; the length ratio of the micropores of the spinneret orifice A and the spinneret orifice B is equal to the product of the ratio of the equivalent diameters of the spinneret orifice A and the spinneret orifice B and the coefficient K and the ratio of the consistency coefficient of the material flowing through the spinneret orifice B and the material flowing through the spinneret orifice A; the equivalent diameter is the ratio of the cross-sectional area of a spinneret orifice to the perimeter of the cross-sectional area, and the value range of the coefficient K is 0.97-1.03;
the composite spinneret plate is extruded, namely, an extinction PET melt is extruded from a spinneret orifice A, and a large bright PET melt is extruded from a spinneret orifice B, or the extinction PET melt is extruded from the spinneret orifice B, and the large bright PET melt is extruded from the spinneret orifice A;
the oiling oil agent contains crown ether, and the content of the crown ether is 67.30-85.58 wt%. The crown ether is a heterocyclic organic compound and contains a plurality of ether groups, the wetting capacity of the crown ether surfactant is higher than that of a corresponding open-chain compound, the crown ether has better solubilization, the solubility of a salt compound in the organic compound is lower, but the addition of the crown ether can improve the solubility of the salt compound in organic matters. The common polyester or polyether compound in the oil agent has larger intermolecular action due to larger molecular weight and hydrogen bond action, and shows larger kinematic viscosity, and after the crown ether is added, the crown ether can be well compatible in the oil agent system of the polyester or polyether compound, enter between molecular chains of polyester or polyether compounds to shield acting force between the molecular chains, thereby reducing the viscosity of the oil solution system, meanwhile, the antistatic agent of the chemical fiber oil solution is mainly divided into anionic surfactant, cationic surfactant and amphoteric surfactant, most of the antistatic agent contains metal ions or exists in the form of salt, which causes poor compatibility of the antistatic agent and polyester or polyether compounds in the oil agent, and the addition of crown ether, due to the salt dissolution effect, the compatibility of the antistatic agent and polyester or polyether compounds is improved, the strength of an oil film of an oil agent is further improved, and the salt dissolution effect has great significance on the stability of spinning and the product holding capacity. Indexes of the oil agent are reflected by a comprehensive factor, so that a certain restriction is provided for the addition amount of crown ether, the advantage of the heat resistance and the oil film strength of the oil agent is not reflected by the excessively low addition amount, and other indexes are limited.
As a preferred technical scheme:
according to the method, the length of each micropore of the spinneret orifice A or the spinneret orifice B is 0.30-2.08 mm, and the equivalent diameter of each spinneret orifice A or the spinneret orifice B is 0.15-0.52 mm;
the spinneret orifices A or B are independently selected from double cross-shaped, round, triangular, straight, king-shaped, cross-shaped, hollow, five-leaf and three-leaf spinneret orifices.
According to the method, all the spinneret orifices are arranged on the spinneret plate in concentric circles, the centers of the spinneret orifices or the centers of circumscribed circles are located on the concentric circles, the concentric circles are concentric circles with equal intervals, and the spinneret orifices on the same ring are arranged in equal intervals;
the spinneret orifices on the same ring are spinneret orifices A or spinneret orifices B, and the spinneret orifices on two adjacent rings are different in shape;
or the same ring simultaneously contains spinneret orifices A and spinneret orifices B, and the number ratio of the spinneret orifices A to the spinneret orifices B or the number ratio of the spinneret orifices B to the spinneret orifices A on the same ring is 1-10: 1.
According to the method, the thermal weight loss of the oil agent after the oil agent is heated and treated at 200 ℃ for 2h is less than 15 wt%, the crown ether has a higher volatile point and excellent heat-resistant stability, and the heat-resistant performance of the oil agent introduced with the crown ether is also remarkably improved;
the kinematic viscosity of the oil agent is 27.5-30.1 mm at the temperature of (50 +/-0.01) ° C2S, the oil agentThe kinematic viscosity of the emulsion prepared by water with the concentration of 10 wt% is 0.93-0.95 mm2The crown ether can reduce the viscosity of the oil agent mainly because the crown ether has lower viscosity and is a bead-shaped micromolecule, and after the crown ether is introduced into the oil agent system, the crown ether can be well compatible in the polyester compound or polyether compound oil agent system and simultaneously enters between molecular chains of the polyester compound or polyether compound to shield the acting force between the molecular chains, so that the viscosity of the oil agent system is reduced;
the oil film strength of the oil agent is 121-127N, the oil film strength of the oil agent in the prior art is low and is generally about 110N, the main reason is that most of antistatic agents of the chemical fiber oil agent contain metal ions or exist in the form of salt, the compatibility of the antistatic agents and polyester compounds or polyether compounds in the oil agent is poor, and the crown ether can improve the oil film strength is mainly that salt solution effect can be generated after the crown ether is added, so that the compatibility of the antistatic agents and the polyester compounds or polyether compounds is improved, and the oil film strength of the oil agent is further improved;
the surface tension of the oil agent is 23.2-26.8 cN/cm, and the specific resistance is 1.0 x 108～1.8×108Ω·cm；
After oiling, the static friction coefficient between the fibers is 0.250-0.263, and the dynamic friction coefficient is 0.262-0.273;
after oiling, the static friction coefficient between the fiber and the metal is 0.202-0.210, and the dynamic friction coefficient is 0.320-0.332.
The method as described above, wherein the crown ether is 2-hydroxymethyl-12-crown-4, 15-crown-5 or 2-hydroxymethyl-15-crown-5;
the oil agent also contains mineral oil, phosphate potassium salt, trimethylolpropane laurate and alkyl sodium sulfonate;
the mineral oil is one of 9# to 17# mineral oil;
the phosphate potassium salt is dodecyl phosphate potassium salt, isomeric tridecanol polyoxyethylene ether phosphate potassium salt or dodecatetradecanol phosphate potassium salt;
the sodium alkyl sulfonate is sodium dodecyl sulfonate, sodium pentadecyl sulfonate or sodium hexadecyl sulfonate;
when the oil agent is used, preparing an emulsion with the concentration of 10-20 wt% by using water;
the preparation method of the oil agent comprises the following steps: uniformly mixing crown ether, phosphate potassium salt, trimethylolpropane laurate and sodium alkyl sulfonate, adding the mixture into mineral oil, and uniformly stirring to obtain an oil agent; the addition amount of each component is as follows according to the parts by weight:
Figure BDA0001508223420000051
the mixing is carried out at normal temperature, the stirring temperature is 40-55 ℃, and the stirring time is 1-3 h.
In the method, the spinning process parameters of the POY yarns are as follows:
temperature of extrusion: 280-290 ℃;
cooling air temperature: 20-25 ℃;
speed of winding: 2500-3000 m/min;
the spinning process parameters of the DTY are as follows:
spinning speed: 550-680 m/min;
T1：210～245℃；
T2：210～245℃；
and (3) air compression: 0.09-0.12 MPa;
oil wheel rotating speed: 0.50 r/min.
The invention mechanism is as follows:
the polyester melt is a non-Newtonian fluid, is a viscoelastic fluid, and generates elastic deformation while performing viscous flow in a spinneret orifice, and the existence of the elastic deformation is one of the key factors for unstable spinning. The length, the cross section perimeter and the cross section area of the spinneret orifices of the spinneret orifice have great influence on the storage and the relaxation degree of the elastic energy in the melt, and the invention realizes the relaxation of the elastic energy of the melt by setting the lengths, the cross section areas and the cross section perimeters of the two spinneret orifices on the same spinneret plate and establishing a certain relation between the sizes of the two spinneret orifices and the consistency coefficients of materials flowing through the two spinneret orifices, so that the pressure drop of the melt in the process of passing through different spinneret orifices is the same, the pressure and the expansion of the melt at an outlet are reduced, and the smooth and stable operation of the melt spinning is ensured.
The calculation formula of the pressure drop of the melt when the melt passes through the spinneret orifices of the spinneret is as follows:
Figure BDA0001508223420000061
in the formula, Δ P is the pressure drop of the melt, SInner partIs the inner wall area of the spinneret hole, and the value is equal to the product of the length of the micro-pores of the spinneret hole and the perimeter of the cross section of the spinneret hole, SCutting blockτ is the viscous fluid shear stress of the material, where τ is λ γ, λ is the consistency factor of the material, and γ is the shear rate.
For two polyester melts passing through spinneret orifices A and B with different shapes on the same spinneret plate, the pressure drop of the melts in the process of passing through different spinneret orifices must be ensured to be the same or the phase difference is in a certain range, namely delta P, to ensure that the extruding speeds of the melts from different spinneret orifices are consistent or the phase difference is smallerA＝KΔPBAnd the coefficient K is 0.97-1.03, so that the relationship between the lengths of the micropores of different spinneret orifices, the perimeter of the cross section of the spinneret orifices, the area of the cross section of the spinneret orifices and the consistency coefficients of the materials flowing through the two spinneret orifices can be deduced, namely:
Figure BDA0001508223420000071
wherein D is the length of the micropores of the spinneret orifice, S is the cross-sectional area of the spinneret orifice, L is the perimeter of the cross-section of the spinneret orifice, and lambdaAIs the thickness coefficient, lambda, of the material flowing through the orifice ABIs the consistency factor of the material flowing through orifice B.
The invention ensures smooth and stable spinning by utilizing the composite spinneret plate which is provided with two spinneret orifices with special shapes, and the lengths, the cross section areas and the sizes of the perimeter of the cross sections of the two spinneret orifices and the consistency coefficients of materials flowing through the two spinneret orifices have certain relation, solves the problems of uneven fiber, uneven strength, uneven dyeing and the like caused by uneven pressure drop during extrusion molding of different melts in the spinning process of the different-component composite filament, improves the stability of products, realizes that full-dull PET and bright PET melts are simultaneously extruded from different spinneret orifices of the same spinneret plate, and ensures smooth spinning processing and excellent comprehensive performance of the composite filament.
Has the advantages that:
(1) the full-dull polyester composite yarn has the advantages of both full-dull PET fibers and bright PET fibers, and the full-dull fabric processed by the full-dull polyester composite yarn has excellent performances of gloss, softness, soft hand feeling, good drapability, novel style and the like, and has excellent popularization value;
(2) according to the preparation method of the full-dull polyester-polyester composite yarn, the oiling agent containing crown ether used in the oiling process has the characteristics of low viscosity, good heat resistance, high oil film strength, good smoothness and strong antistatic property, and the spinning stability and the fiber processability are improved;
(3) the invention relates to a preparation method of full-dull polyester-polyester composite filament, which is characterized in that two spinneret orifices with different lengths of micropores, different cross-sectional areas and different cross-sectional perimeters are arranged on a composite spinneret plate, and the sizes of the two spinneret orifices and the consistency coefficients of materials flowing through the two spinneret orifices are in a certain relation, so that the pressure drop of a polyester melt in the process of passing through the different spinneret orifices is basically the same, the extrusion speeds of the melt from the spinneret orifices are basically consistent, and the smooth and stable spinning of the melt is ensured;
(4) according to the preparation method of the full-dull polyester composite yarn, the mixture of amorphous titanium dioxide and amorphous silicon dioxide or the mixture of calcium carbonate and amorphous silicon dioxide is adopted as inorganic matte particles, the inorganic particles are uniformly dispersed in PET, and the crystallization and orientation of the PET are damaged, so that the surface of the fiber is in a matte state and is more similar to the texture of natural cotton.
Drawings
FIG. 1 is a schematic view showing the arrangement of the orifices of the composite spinneret of example 1 of the present invention;
FIG. 2 is a schematic view showing the arrangement of the orifices of the composite spinneret in example 2 of the present invention;
fig. 3 is a schematic view of the arrangement of the spinneret orifices of the composite spinneret plate in example 3 of the present invention.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-12-crown-4 with dodecyl phosphate potassium salt, trimethylolpropane laurate and sodium dodecyl sulfate at normal temperature, adding the mixture into No. 9 mineral oil, and uniformly stirring the mixture for 1h at 40 ℃ to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 2 parts of No. 9 mineral oil; 10 parts of trimethylolpropane laurate; 90 portions of 2-hydroxymethyl-12-crown-4; 8 parts of dodecyl phosphate potassium salt; 3 parts of sodium dodecyl sulfate; the content of crown ether in the prepared oil agent is 79.6 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 14.5 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 29.6mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) the oil has high oil film strength of 125N, surface tension of 24.8cN/cm, and specific resistance of 1.3X 108Omega cm; after oiling, the static friction coefficient (μ s) between the fibers (F/F) was 0.255 and the dynamic friction coefficient (μ d) was 0.266; after oiling, the static friction coefficient (mu s) between the fiber and the metal (F/M) is 0.203, the dynamic friction coefficient (mu d) is 0.320, and the prepared oil agent is used to ensure thatWhen in use, the mixture is prepared into emulsion with the concentration of 15 wt% by water;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.7 wt%, the content of the matting agent in the big bright PET monofilaments is 1.7 wt%, the content of the amorphous silicon dioxide in the matting agent is 22 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 285 ℃; cooling air temperature: 22 ℃; speed of winding: 2700 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K is 1.01, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes A, and high-gloss PET melt is extruded from the spinneret holes B, wherein the length of the micropore of the spinneret hole A is 0.83mm, the length of the micropore of the spinneret hole B is 1.30mm, the equivalent diameter of the spinneret hole A is 0.35mm, the ratio of the consistency coefficient of the high-gloss PET melt to the extinction PET melt is 0.64, the spinneret hole A is a double-cross spinneret hole, the spinneret hole B is a trilobal spinneret hole, and all the spinneret holes are concentrically arranged on the spinneret plate, the centers of all the spinneret orifices are positioned on concentric circles, the concentric circles are equidistant concentric circles, the spinneret orifices on the same ring are arranged at equal intervals, the arrangement schematic diagram of the spinneret orifices is shown in figure 1, the same ring simultaneously contains spinneret orifices A and spinneret orifices B, and the number ratio of the spinneret orifices A to the spinneret orifices B on the same ring is 3: 1;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 620 m/min; t1 is 227 ℃; t2 is 225 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains a dull PET monofilament and a large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.60dtex, the fineness of the large bright PET monofilament is 0.35dtex, the glossiness of the prepared full-dull polyester composite filament is 19%, the fineness of the prepared full-dull polyester composite filament is 110dtex, the breaking strength is 2.1cN/dtex, the elongation at break is 22.0%, the crimp shrinkage is 8.5%, the linear density deviation rate is 1.9%, the CV value of the breaking strength is 6.5%, the CV value of the elongation at break is 7.5%, the CV value of the crimp shrinkage is 7.8%, the shrinkage in boiling water is 3.5%, and the full-up rate is 99%.
Example 2
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 15-crown ether-5, isotridecanol polyoxyethylene ether phosphate potassium salt, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into 10# mineral oil, and uniformly stirring the mixture at 43 ℃ for 1.5 hours to obtain an oil agent, wherein the addition amount of the components is as follows in parts by weight: 2 portions of No. 10 mineral oil; 15 parts of trimethylolpropane laurate; 70 portions of 15-crown ether-5; 10 parts of isomeric tridecanol polyoxyethylene ether phosphate potassium salt; 7 parts of sodium pentadecylsulfonate; the content of crown ether in the prepared oil agent is 67.30 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 13 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 28.1mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 123N, which is a high oil film strength of the oil, 25.1cN/cm, which is a surface tension of the oil, and 1.5X 10 of specific resistance8Omega cm; after oiling, the static friction coefficient (mus) between the fibers (F/F) was 0.257, and the dynamic friction coefficient (μ d) was 0.265; after oiling, the static coefficient of friction (μ s) between the fiber and the metal (F/M) was 0.205, and the dynamic coefficient of friction (μ d) was 0.323; when the prepared oil agent is used, water is used for preparing emulsion with the concentration of 14 wt%;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.5 wt%, the content of the matting agent in the big bright PET monofilaments is 1.5 wt%, the content of the amorphous silicon dioxide in the matting agent is 15 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 280 ℃; cooling air temperature: 20 ℃; speed of winding: 2500 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K and the consistency coefficient of the material flowing through the spinneret holes B and the material flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area of the spinneret holes to the perimeter of the cross section, the value of the coefficient K is 1.03, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes B, and high-gloss PET melt is extruded from the spinneret holes A, wherein the length of the micropores of the spinneret holes B is 0.30mm, the length of the micropores of the spinneret holes A is 0.4mm, the equivalent diameter of the spinneret holes B is 0.15mm, the ratio of the consistency coefficient of the high-gloss PET melt to the extinction PET melt is 0.75, the spinneret holes A are circular spinneret holes, the spinneret holes B are five-leaf-shaped spinneret holes, and, the centers of the circumscribed circles of all the spinneret holes are positioned on a concentric circle, the concentric circles are equidistant concentric circles, the spinneret holes on the same ring are arranged at equal intervals, the arrangement schematic diagram of the spinneret holes is shown in figure 2, the spinneret holes on the same ring are spinneret holes A or spinneret holes B, and the spinneret holes on two adjacent rings are different in shape;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 550 m/min; t1 is 210 ℃; t2 is 210 ℃; the compressed air is 0.09 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains a dull PET monofilament and a large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.50dtex, the fineness of the large bright PET monofilament is 0.30dtex, the glossiness of the prepared full-dull polyester composite filament is 19.5 percent, the fineness of the prepared full-dull polyester composite filament is 75dtex, the breaking strength is 2.0cN/dtex, the elongation at break is 18 percent, the crimp shrinkage is 8.9 percent, the linear density deviation rate is 1.9 percent, the CV value of the breaking strength is 6.9 percent, the CV value of the elongation at break is 7.9 percent, the CV value of the crimp shrinkage coefficient is 8.4 percent, the shrinkage in boiling water is 3.0 percent, and the full-up rate is 98 percent.
Example 3
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-15-crown-5 with potassium dodecatetradecanol phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into No. 11 mineral oil, and uniformly stirring the mixture at 48 ℃ for 3 hours to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 8 parts of No. 11 mineral oil; 10 parts of trimethylolpropane laurate; 85 parts of 2-hydroxymethyl-15-crown-5; 11 parts of potassium dodecatetradecanol phosphate; 5 parts of sodium pentadecylsulfonate; the content of crown ether in the prepared oil agent is 70.83 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 11 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 30.1mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.94mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 125N, the oil film strength of the oil agent is high, the surface tension of the oil agent is 23.2cN/cm, and the specific resistance is 1.8 x 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.250, coefficient of dynamic friction (. mu.)d) Is 0.272; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.209, coefficient of dynamic friction (. mu.)d) 0.329, and the prepared oil agent is prepared into emulsion with the concentration of 10 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 2.0 wt%, the content of the matting agent in the big bright PET monofilaments is 2.0 wt%, the content of the amorphous silicon dioxide in the matting agent is 30 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 290 ℃; cooling air temperature: 25 ℃; speed of winding: 3000 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the ratio of the lengths of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameters of the spinneret holes A to the spinneret holes B, the coefficient K and the ratio of the consistency coefficients of the materials flowing through the spinneret holes B and the materials flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area to the perimeter of the cross section of the spinneret holes, the coefficient K is 0.97, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes A, and high-gloss PET melt is extruded from the spinneret holes B, wherein the length of the micropores of the spinneret holes A is 1.42mm, the length of the micropores of the spinneret holes B is 2.08mm, the equivalent diameter of the spinneret holes A is 0.52mm, the ratio of the consistency coefficients of the high-gloss PET melt and the extinction PET melt is 0.68, the spinneret holes A are triangular spinneret holes, the spinneret holes B are hollow spinneret holes, and all the spinneret holes are, the centers of all the spinneret orifices are positioned on concentric circles, the concentric circles are equidistant concentric circles, the spinneret orifices on the same ring are arranged at equal intervals, the arrangement schematic diagram of the spinneret orifices is shown in figure 3, the same ring simultaneously contains spinneret orifices A and spinneret orifices B, and the number ratio of the spinneret orifices A to the spinneret orifices B on the same ring is 1: 1;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 680 m/min; t1 is 245 ℃; t2 is 245 ℃; the air pressure is 0.12 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains dull PET monofilament and large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.70dtex, the fineness of the large bright PET monofilament is 0.40dtex, the glossiness of the prepared full-dull polyester composite filament is 18 percent, the fineness of the prepared full-dull polyester composite filament is 150dtex, the breaking strength is 2.2cN/dtex, the elongation at break is 24 percent, the crimp shrinkage is 8.1 percent, the linear density deviation rate is 1.8 percent, the CV value of the breaking strength is 6.3 percent, the CV value of the elongation at break is 7.2 percent, the CV value of the crimp shrinkage is 7.6 percent, the shrinkage in boiling water is 4.0 percent, and the full-curl rate is 99.5 percent.
Example 4
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-12-crown-4 with dodecyl phosphate potassium salt, trimethylolpropane laurate and sodium hexadecylsulfonate at normal temperature, adding the mixture into 12# mineral oil, and uniformly stirring the mixture for 2.5 hours at 40 ℃ to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 5 parts of No. 12 mineral oil; 95 parts of 2-hydroxymethyl-12-crown-4; 9 parts of dodecyl phosphate potassium salt; the hexadecyl sodium sulfonate is 2 parts. The content of crown ether in the prepared oil agent is 85.58 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 9 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 29.5mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) the oil film strength of the oil agent is high and is 121N, the surface tension of the oil agent is 24.3cN/cm, and the specific resistance is 1.0X 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.260, coefficient of dynamic friction (. mu.)d) Is 0.263; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.202, coefficient of dynamic friction (. mu.)d) 0.330, and the prepared oil agent is prepared into an emulsion with the concentration of 19 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.6 wt%, the content of the matting agent in the big bright PET monofilaments is 1.65 wt%, the content of the amorphous silicon dioxide in the matting agent is 17 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 282 ℃; cooling air temperature: 21 ℃; speed of winding: 2550 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K and the consistency coefficient of the material flowing through the spinneret holes B and the material flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area of the spinneret holes to the perimeter of the cross section, the value of the coefficient K is 0.99, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes A, and high-gloss PET melt is extruded from the spinneret holes B, wherein the length of the micropores of the spinneret holes A is 0.9mm, the length of the micropores of the spinneret holes B is 1.342mm, the equivalent diameter of the spinneret holes A is 0.37mm, the ratio of the consistency coefficients of the high-gloss PET melt and the extinction PET melt is 0.67, the spinneret holes A are in-line-shaped spinneret holes, the spinneret holes B are cross-shaped spinneret, the centers of all the spinneret orifices are positioned on concentric circles, the concentric circles are equidistant concentric circles, the spinneret orifices on the same ring are arranged at equal intervals, the spinneret orifices on the same ring are spinneret orifices A or spinneret orifices B, and the spinneret orifices on two adjacent rings are different in shape;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 580-m/min; t1 is 215 ℃; t2 is 216 ℃; the air pressure is 0.10 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains dull PET monofilament and large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.60dtex, the fineness of the large bright PET monofilament is 0.31dtex, the glossiness of the prepared full-dull polyester composite filament is 18.9%, the fineness of the prepared full-dull polyester composite filament is 80dtex, the breaking strength is 2.03cN/dtex, the elongation at break is 20.5%, the crimp shrinkage is 8.8%, the linear density deviation rate is 1.95%, the breaking strength CV value is 6.8%, the elongation at break CV value is 7.8%, the crimp shrinkage variation coefficient CV value is 8.4%, the boiling water shrinkage is 3.2%, and the full-curl rate is 98.4%.
Example 5
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 15-crown ether-5, isotridecanol polyoxyethylene ether phosphate potassium salt, trimethylolpropane laurate and sodium dodecyl sulfate at normal temperature, adding the mixture into 13# mineral oil, and uniformly stirring the mixture for 2 hours at 52 ℃ to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 10 parts of No. 13 mineral oil; 5 parts of trimethylolpropane laurate; 70 portions of 15-crown ether-5; 8 parts of isomeric tridecanol polyoxyethylene ether phosphate potassium salt; 6 parts of sodium dodecyl sulfate. The content of crown ether in the prepared oil agent is 70.70 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 13.5 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 28.6mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.95mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 126N, which is a high oil film strength of the oil agent, 24.9cN/cm, which is a surface tension of the oil agent, and 1.2X 10 which is a specific resistance8Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.251, coefficient of dynamic friction (. mu.)d) Is 0.262; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.202, coefficient of dynamic friction (. mu.)d) 0.332, and the prepared oil agent is prepared into an emulsion with the concentration of 11 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.7 wt%, the content of the matting agent in the big bright PET monofilaments is 1.75 wt%, the content of the amorphous silicon dioxide in the matting agent is 18 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 286 ℃; cooling air temperature: 22 ℃; speed of winding: 2600 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K and the consistency coefficient of the material flowing through the spinneret holes B and the material flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area of the spinneret holes to the perimeter of the cross section, the value of the coefficient K is 1.01, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes B, and high-gloss PET melt is extruded from the spinneret holes A, wherein the length of the micropores of the spinneret holes A is 0.7mm, the length of the micropores of the spinneret holes B is 0.47mm, the equivalent diameter of the spinneret holes A is 0.25mm, the ratio of the consistency coefficient of the high-gloss PET melt to the extinction PET melt is 0.65, the spinneret holes A are in a shape of a Chinese character 'Wang' shaped spinneret holes, the spinneret holes, the centers of the circumscribed circles of all the spinneret holes are positioned on a concentric circle, the concentric circles are equidistant concentric circles, the spinneret holes on the same ring are arranged at equal intervals, the same ring simultaneously contains spinneret holes A and spinneret holes B, and the number ratio of the spinneret holes A to the spinneret holes B on the same ring is 10: 1;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 600 m/min; t1 is 220 ℃; t2 is 225 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains dull PET monofilament and large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.63dtex, the fineness of the large bright PET monofilament is 0.34dtex, the glossiness of the prepared full-dull polyester composite filament is 18.5%, the fineness of the prepared full-dull polyester composite filament is 90dtex, the breaking strength is 2.08cN/dtex, the elongation at break is 21%, the crimp shrinkage is 8.5%, the linear density deviation rate is 1.9%, the CV value of the breaking strength is 6.5%, the CV value of the elongation at break is 7.6%, the CV value of the crimp shrinkage is 8.2%, the shrinkage in boiling water is 3.5%, and the full-up rate is 98.5%.
Example 6
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-15-crown-5 with potassium dodecatetradecanol phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into No. 14 mineral oil, and uniformly stirring the mixture at 55 ℃ for 1h to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 3 parts of No. 14 mineral oil; 10 parts of trimethylolpropane laurate; 75 parts of 2-hydroxymethyl-15-crown-5; 14 parts of potassium dodecatetradecanol phosphate; and 7 parts of sodium pentadecylsulfonate. The content of crown ether in the prepared oil agent is 68.80 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 12 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 27.5mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.95mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 126N, which is a high oil film strength of the oil agent, 25.4cN/cm, which is a surface tension of the oil agent, and 1.6X 10 of a specific resistance8Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.255, coefficient of dynamic friction (. mu.)d) Is 0.267; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.203, coefficient of dynamic friction (. mu.)d) 0.330, and the prepared oil agent is prepared into an emulsion with the concentration of 20 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.8 wt%, the content of the matting agent in the big bright PET monofilaments is 1.78 wt%, the content of the amorphous silicon dioxide in the matting agent is 23 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 286 ℃; cooling air temperature: 23 ℃; speed of winding: 2800 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the ratio of the lengths of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameters of the spinneret holes A to the spinneret holes B, the coefficient K and the ratio of the consistency coefficients of the materials flowing through the spinneret holes B and the materials flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area to the perimeter of the cross section of the spinneret holes, the value of the coefficient K is 1.02, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes A, and high-gloss PET melt is extruded from the spinneret holes B, wherein the length of the micropores of the spinneret holes B is 1.56mm, the length of the micropores of the spinneret holes A is 0.98mm, the equivalent diameter of the spinneret holes B is 0.50mm, the ratio of the consistency coefficients of the high-gloss PET melt and the extinction PET melt is 0.64, the spinneret holes A are cross-shaped spinneret holes, the spinneret holes B are cross-shaped spinneret, the centers of all the spinneret orifices are positioned on concentric circles, the concentric circles are equidistant concentric circles, the spinneret orifices on the same ring are arranged at equal intervals, the same ring simultaneously contains spinneret orifices A and spinneret orifices B, and the number ratio of the spinneret orifices A to the spinneret orifices B on the same ring is 8: 1;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 620 m/min; t1 is 230 ℃; t2 is 232 ℃; the air pressure is 0.12 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains dull PET monofilament and large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.65dtex, the fineness of the large bright PET monofilament is 0.36dtex, the glossiness of the prepared full-dull polyester composite filament is 18.4%, the fineness of the prepared full-dull polyester composite filament is 100dtex, the breaking strength is 2.09cN/dtex, the elongation at break is 22.6%, the crimp shrinkage is 8.4%, the linear density deviation rate is 1.84%, the breaking strength CV value is 6.3%, the breaking elongation CV value is 7.4%, the crimp shrinkage variation coefficient CV value is 7.0%, the boiling water shrinkage is 3.7%, and the full-curl rate is 98.8%.
Example 7
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: mixing 15-crown-5 with dodecyl phosphorusThe oil preparation is prepared by uniformly mixing potassium acid ester salt, trimethylolpropane laurate and sodium hexadecylsulfonate at normal temperature, adding the mixture into 15# mineral oil, and uniformly stirring the mixture for 2 hours at 41 ℃ to obtain an oil solution, wherein the addition amount of each component is as follows in parts by weight: 8 parts of No. 15 mineral oil; 20 parts of trimethylolpropane laurate; 100 portions of 15-crown ether-5; 15 parts of dodecyl phosphate potassium salt; the hexadecyl sodium sulfonate is 2 parts. The content of crown ether in the prepared oil agent is 68.97 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 8.5 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 28.4mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.94mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) the oil film strength of the oil agent was 122N, the surface tension of the oil agent was 26.8cN/cm, and the specific resistance was 1.8X 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.263, coefficient of dynamic friction (. mu.)d) Is 0.268; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.210, coefficient of dynamic friction (. mu.)d) 0.320, and the prepared oil agent is prepared into an emulsion with the concentration of 13 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.9 wt%, the content of the matting agent in the big bright PET monofilaments is 1.9 wt%, the content of the amorphous silicon dioxide in the matting agent is 25 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 288 ℃; cooling air temperature: 24 ℃; speed of winding: 2800 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K and the consistency coefficient of the material flowing through the spinneret holes B and the material flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area of the spinneret holes to the perimeter of the cross section, the value of the coefficient K is 1.02, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes A, and high-gloss PET melt is extruded from the spinneret holes B, wherein the length of the micropores of the spinneret holes B is 1.56mm, the length of the micropores of the spinneret holes A is 1.03mm, the equivalent diameter of the spinneret holes B is 0.50mm, the ratio of the consistency coefficients of the high-gloss PET melt and the extinction PET melt is 0.67, the spinneret holes A are cross-shaped spinneret holes, the spinneret holes B are cross-shaped spinneret holes, the centers of all the spinneret orifices are positioned on concentric circles, the concentric circles are equidistant concentric circles, the spinneret orifices on the same ring are arranged at equal intervals, the same ring simultaneously contains spinneret orifices A and spinneret orifices B, and the number ratio of the spinneret orifices A to the spinneret orifices B on the same ring is 7: 1;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 630 m/min; t1 is 230 ℃; t2 is 235 ℃; the compressed air is 0.09 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains a dull PET monofilament and a large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.68dtex, the fineness of the large bright PET monofilament is 0.39dtex, the glossiness of the prepared full-dull polyester composite filament is 18.2%, the fineness of the prepared full-dull polyester composite filament is 120dtex, the breaking strength is 2.12cN/dtex, the elongation at break is 22.8%, the crimp shrinkage is 8.2%, the linear density deviation rate is 1.82%, the breaking strength CV value is 6.3%, the breaking elongation CV value is 7.2%, the crimp shrinkage coefficient CV value is 7.7%, the boiling water shrinkage is 3.8%, and the full-curl rate is 99%.
Example 8
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-12-crown-4 with potassium dodecatetradecanol phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding into 16# mineral oil, and uniformly stirring at 45 ℃ for 3h to obtain an oil agent, wherein the components are added in parts by weightThe amounts were as follows: 9 parts of No. 16 mineral oil; 80 portions of 2-hydroxymethyl-12-crown-4; 12 parts of potassium dodecatetradecanol phosphate; 5 parts of sodium pentadecylsulfonate. The content of crown ether in the prepared oil agent is 83.33 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 14 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 30.0mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2The oil has a high oil film strength of 127N, a surface tension of 23.5cN/cm, and a specific resistance of 1.5X 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.262, coefficient of dynamic friction (. mu.)d) Is 0.273; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.208, coefficient of dynamic friction (. mu.)d) 0.328, and the prepared oil agent is prepared into emulsion with the concentration of 18 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 1.95 wt%, the content of the matting agent in the big bright PET monofilaments is 1.95 wt%, the content of the amorphous silicon dioxide in the matting agent is 28 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 290 ℃; cooling air temperature: 25 ℃; speed of winding: 2950 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K and the consistency coefficient of the material flowing through the spinneret holes B and the material flowing through the spinneret holes A, the equivalent diameter is the ratio of the cross section area of the spinneret holes to the perimeter of the cross section, the value of the coefficient K is 1.01, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes B, and high-gloss PET melt is extruded from the spinneret holes A, wherein the length of the micropores of the spinneret holes A is 0.7mm, the length of the micropores of the spinneret holes B is 0.49mm, the equivalent diameter of the spinneret holes A is 0.25mm, the ratio of the consistency coefficient of the high-gloss PET melt to the extinction PET melt is 0.68, the spinneret holes A are in a shape of a Chinese character 'Wang' shaped spinneret holes, the spinneret holes, the centers of the circumscribed circles of all the spinneret holes are positioned on a concentric circle, the concentric circles are equidistant concentric circles, the spinneret holes on the same ring are arranged at equal intervals, the same ring simultaneously contains spinneret holes A and spinneret holes B, and the number ratio of the spinneret holes A to the spinneret holes B on the same ring is 10: 1;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 670 m/min; t1 is 240 ℃; t2 is 240 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains a dull PET monofilament and a large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.67dtex, the fineness of the large bright PET monofilament is 0.39dtex, the glossiness of the prepared full-dull polyester composite filament is 18.1%, the fineness of the prepared full-dull polyester composite filament is 140dtex, the breaking strength is 2.16cN/dtex, the elongation at break is 23.5%, the crimp shrinkage is 8.1%, the linear density deviation rate is 1.81%, the breaking strength CV value is 6.4%, the elongation at break CV value is 7.2%, the crimp shrinkage variation coefficient CV value is 7.8%, the boiling water shrinkage is 3.9%, and the full-curl rate is 99.2%.
Example 9
A preparation method of full-dull polyester composite yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-15-crown-5 with dodecyl phosphate potassium salt, trimethylolpropane laurate and sodium dodecyl sulfate at normal temperature, and uniformly stirring at 55 ℃ for 3 hours to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 15 parts of trimethylolpropane laurate; 90 portions of 2-hydroxymethyl-15-crown-5; 8 parts of dodecyl phosphate potassium salt; 7 parts of sodium dodecyl sulfate. The content of crown ether in the prepared oil agent is 81.81 wt%, the high temperature resistance of the oil agent is excellent, and the content is 2The thermal weight loss is 10 wt% after the heating treatment at the temperature of 00 ℃ for 2 h; the viscosity of the oil agent is low, and the kinematic viscosity is 29.7mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.94mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 126N, which is a high oil film strength of the oil agent, 24.8cN/cm, which is a surface tension of the oil agent, and 1.8X 10 which is a specific resistance8Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.250, coefficient of dynamic friction (. mu.)d) Is 0.264; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.210, coefficient of dynamic friction (. mu.)d) 0.321, when the prepared oil agent is used, water is used for preparing emulsion with the concentration of 10 wt%;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a delustering PET melt and a big bright PET melt, wherein a matting agent is dispersed in the delustering PET melt and the big bright PET melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in delustering PET monofilaments is 2.0 wt%, the content of the matting agent in the big bright PET monofilaments is 1.95 wt%, the content of the amorphous silicon dioxide in the matting agent is 29 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 290 ℃; cooling air temperature: 25 ℃; speed of winding: 2500 m/min;
the specific process of extruding the composite spinneret plate comprises the following steps: the composite spinneret plate is simultaneously provided with two different spinneret holes A and two different spinneret holes B, the length ratio of the spinneret holes A to the spinneret holes B is equal to the product of the ratio of the equivalent diameter of the spinneret holes A to the equivalent diameter of the spinneret holes B, the coefficient K is 0.99, the extrusion of the composite spinneret plate means that extinction PET melt is extruded from the spinneret holes A, and high-gloss PET melt is extruded from the spinneret holes B, wherein the length of the micropore of the spinneret hole A is 0.86mm, the length of the micropore of the spinneret hole B is 1.342mm, the equivalent diameter of the spinneret hole A is 0.37mm, the ratio of the consistency coefficients of the high-gloss PET melt and the extinction PET melt is 0.64, the spinneret hole A is a straight-line-shaped spinneret hole, the spinneret hole B is a cross-shaped spinneret hole, and all the spinneret holes are concentrically arranged on the spinneret plate, the centers of all the spinneret orifices are positioned on concentric circles, the concentric circles are equidistant concentric circles, the spinneret orifices on the same ring are arranged at equal intervals, the spinneret orifices on the same ring are spinneret orifices A or spinneret orifices B, and the spinneret orifices on two adjacent rings are different in shape;
(3) the POY is processed by a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely full-dull polyester-polyester composite yarn, wherein the spinning technological parameters of the DTY are as follows: the spinning speed is 550 m/min; t1 is 245 ℃; t2 is 230 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared bundle of full-dull polyester composite filament extruded by the same spinneret plate simultaneously contains dull PET monofilament and large bright PET monofilament, wherein the fineness of the dull PET monofilament is 0.68dtex, the fineness of the large bright PET monofilament is 0.35dtex, the glossiness of the prepared full-dull polyester composite filament is 18%, the fineness of the prepared full-dull polyester composite filament is 125dtex, the breaking strength is 2.17cN/dtex, the elongation at break is 23.8%, the crimp shrinkage is 8.2%, the linear density deviation rate is 1.82%, the CV value of the breaking strength is 6.4%, the CV value of the elongation at break is 7.5%, the CV value of the crimp shrinkage is 7.8%, the shrinkage in boiling water is 3.85%, and the full-up rate is 99%.

Claims (8)

1. A preparation method of full-dull polyester composite yarn is characterized by comprising the following steps: metering, extruding by a composite spinneret plate, cooling, oiling and winding the delustered PET melt and the bright PET melt to prepare POY (polyester pre-oriented yarn), and preparing DTY (draw textured yarn), namely full-delustered polyester-polyester composite yarn, from the POY through a yarn guide pipe, a network, heating and stretching, false twisting, heat setting and winding forming;
matte agents are dispersed in the extinction PET melt and the big bright PET melt;
the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, or a mixture of calcium carbonate and amorphous silicon dioxide;
the composite spinneret plate is simultaneously provided with two different spinneret orifices A and B; the length ratio of the micropores of the spinneret orifice A and the spinneret orifice B is equal to the product of the ratio of the equivalent diameters of the spinneret orifice A and the spinneret orifice B and the coefficient K and the ratio of the consistency coefficient of the material flowing through the spinneret orifice B and the material flowing through the spinneret orifice A; the equivalent diameter is the ratio of the cross-sectional area of a spinneret orifice to the perimeter of the cross-sectional area, and the value range of the coefficient K is 0.97-1.03;
the composite spinneret plate is extruded, namely, an extinction PET melt is extruded from a spinneret orifice A, and a large bright PET melt is extruded from a spinneret orifice B, or the extinction PET melt is extruded from the spinneret orifice B, and the large bright PET melt is extruded from the spinneret orifice A;
the oiling oil agent contains crown ether, and the content of the crown ether is 67.30-85.58 wt%;
the crown ether is 2-hydroxymethyl-12-crown-4, 15-crown ether-5 or 2-hydroxymethyl-15-crown-5;
when the oil agent is used, preparing an emulsion with the concentration of 10-20 wt% by using water;
the thermal weight loss of the oil agent after heating treatment for 2 hours at 200 ℃ is less than 15 wt%;
after introducing crown ether into the oil agent system, the crown ether can be well compatible in the polyester compound or polyether compound oil agent system, and simultaneously enters between molecular chains of the polyester compound or polyether compound to shield acting force between the molecular chains, so that the viscosity of the oil agent system is reduced; the kinematic viscosity of the oil agent is 27.5-30.1 mm at the temperature of (50 +/-0.01) ° C2The kinematic viscosity of the oil agent prepared from water into 10 wt% emulsion is 0.93-0.95 mm2/s；
After the crown ether is added, a salt dissolution effect can be generated, the compatibility of the antistatic agent and polyester compounds or polyethers is improved, and the strength of an oil film of the oil agent is further improved; the oil film strength of the oil agent is 121-127N;
the surface tension of the oil agent is 23.2-26.8 cN/cm, and the specific resistance is 1.0 x 108～1.8×108Ω·cm；
After oiling, the static friction coefficient between the fibers is 0.250-0.263, and the dynamic friction coefficient is 0.262-0.273;
after oiling, the static friction coefficient between the fiber and the metal is 0.202-0.210, and the dynamic friction coefficient is 0.320-0.332;
the titer of the full-dull polyester composite yarn is 75-150 dtex, the breaking strength is more than or equal to 2.0cN/dtex, the elongation at break is 22.0 +/-2.0%, the crimp shrinkage is less than or equal to 9.0%, the linear density deviation rate is less than or equal to 2.0%, the breaking strength CV value is less than or equal to 7.0%, the elongation at break CV value is less than or equal to 8.0%, the crimp shrinkage variation coefficient CV value is less than or equal to 8.5%, the boiling water shrinkage is 3.5 +/-0.5%, and the full-curl rate is more than or equal to 98%.
2. The preparation method of the full-dull polyester composite filament according to claim 1, wherein the length of the micro-pores of the spinneret holes A or B is 0.30 to 2.08mm, and the equivalent diameter of the spinneret holes A or B is 0.15 to 0.52 mm;
the spinneret orifices A or B are independently selected from double cross-shaped, round, triangular, straight, king-shaped, cross-shaped, hollow, five-leaf and three-leaf spinneret orifices.
3. The method for preparing full dull polyester-polyester composite filament according to claim 2, wherein all the spinneret holes are arranged on the spinneret plate in concentric circles, the centers of all the spinneret holes or the centers of circumscribed circles are located on the concentric circles, the concentric circles are concentric circles with equal spacing, and the spinneret holes on the same circular ring are arranged with equal spacing;
the spinneret orifices on the same ring are spinneret orifices A or spinneret orifices B, and the spinneret orifices on two adjacent rings are different in shape;
or the same ring simultaneously contains spinneret orifices A and spinneret orifices B, and the number ratio of the spinneret orifices A to the spinneret orifices B or the number ratio of the spinneret orifices B to the spinneret orifices A on the same ring is 1-10: 1.
4. The preparation method of the full-dull polyester composite yarn according to claim 1, wherein the addition amount of the components in the oil agent is as follows according to the parts by weight:
Figure FDA0002841810690000021
the preparation method of the oil agent comprises the following steps: uniformly mixing all the components and then uniformly stirring to obtain an oil agent;
the mixing is carried out at normal temperature, the stirring temperature is 40-55 ℃, and the stirring time is 1-3 h;
the mineral oil is one of 9# to 17# mineral oil;
the phosphate potassium salt is dodecyl phosphate potassium salt, isomeric tridecanol polyoxyethylene ether phosphate potassium salt or dodecatetradecanol phosphate potassium salt;
the sodium alkyl sulfonate is sodium dodecyl sulfonate, sodium pentadecyl sulfonate or sodium hexadecyl sulfonate.
5. The preparation method of the full-dull polyester composite yarn according to any one of claims 1 to 4, wherein the POY yarn has the following spinning process parameters:
temperature of extrusion: 280-290 ℃;
cooling air temperature: 20-25 ℃;
speed of winding: 2500-3000 m/min;
the spinning process parameters of the DTY are as follows:
spinning speed: 550-680 m/min;
T1：210～245℃；
T2：210～245℃；
compressing air: 0.09-0.12 MPa;
oil wheel rotating speed: 0.50 r/min.
6. The preparation method of the full-dull polyester composite yarn according to claim 1, wherein the preparation method comprises the following steps: the bundle of full-dull polyester-polyester composite filaments extruded by the same spinneret plate simultaneously contains dull PET monofilaments and large bright PET monofilaments;
matte agents are dispersed in the delustering PET monofilament and the big lustrous PET monofilament;
the glossiness of the full-dull polyester-polyester composite yarn is less than 20%.
7. The method for preparing the full dull polyester composite filament according to claim 6, wherein the fineness of the dull PET monofilament is 0.50-0.70 dtex, and the fineness of the big bright PET monofilament is 0.30-0.40 dtex.
8. The method for preparing full dull polyester composite filament according to claim 1, wherein the content of the matting agent in the dull PET monofilament or the bright PET monofilament is 1.5-2.0 wt%, and the content of the amorphous silica in the matting agent is 15-30 wt%.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1826373A (en) * 2003-07-03 2006-08-30 罗狄亚特性纤维公司 Mineral fillers for enhancing opacity of thermoplastic polymers
CN105019059A (en) * 2015-07-31 2015-11-04 江苏恒科新材料有限公司 Super-soft superfine polyester fiber and preparation method thereof
CN106283253A (en) * 2016-08-31 2017-01-04 江苏恒力化纤股份有限公司 A kind of porous polyester fiber DTY silk and preparation method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007197887A (en) * 2005-09-30 2007-08-09 Toray Ind Inc Polyamide fiber and method for producing the same
CN102277667A (en) * 2011-08-05 2011-12-14 福建百宏聚纤科技实业有限公司 Super imitation cotton polyester filament and production process thereof
CN203754918U (en) * 2013-12-18 2014-08-06 东群织造(苏州)有限公司 Polyester-polyester composite filament elastic bubble crease fabric
CN105951192A (en) * 2016-05-13 2016-09-21 海安县中山合成纤维有限公司 Polyester-polyester hot melt composite filament production method
CN107287754B (en) * 2017-08-01 2019-08-30 上海亮丰新材料科技有限公司 A kind of imitative cotton full-dull warp knit pile fabric and its production method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1826373A (en) * 2003-07-03 2006-08-30 罗狄亚特性纤维公司 Mineral fillers for enhancing opacity of thermoplastic polymers
CN105019059A (en) * 2015-07-31 2015-11-04 江苏恒科新材料有限公司 Super-soft superfine polyester fiber and preparation method thereof
CN106283253A (en) * 2016-08-31 2017-01-04 江苏恒力化纤股份有限公司 A kind of porous polyester fiber DTY silk and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
一种冠醚化合物作为新型润滑油添加剂的抗磨减摩性能研究;张俊彦等;《摩擦学学报》;19990930;第278-280页 *
异形喷丝板的孔形设计方法;赵琪;《合成纤维工业》;19880831;第22-27页 *

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