CN104357943B - A kind of preparation method of porous fine denier spandex - Google Patents
A kind of preparation method of porous fine denier spandex Download PDFInfo
- Publication number
- CN104357943B CN104357943B CN201410576663.8A CN201410576663A CN104357943B CN 104357943 B CN104357943 B CN 104357943B CN 201410576663 A CN201410576663 A CN 201410576663A CN 104357943 B CN104357943 B CN 104357943B
- Authority
- CN
- China
- Prior art keywords
- spandex
- porous fine
- porous
- solution
- denier spandex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920002334 Spandex Polymers 0.000 title claims abstract description 80
- 239000004759 spandex Substances 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000009941 weaving Methods 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 claims abstract description 4
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 3
- 238000009987 spinning Methods 0.000 claims description 21
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 19
- 239000004814 polyurethane Substances 0.000 claims description 17
- 229920002635 polyurethane Polymers 0.000 claims description 17
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 6
- 238000000578 dry spinning Methods 0.000 claims description 6
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 239000004970 Chain extender Substances 0.000 claims description 5
- 239000002981 blocking agent Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 125000004427 diamine group Chemical group 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 150000004985 diamines Chemical class 0.000 claims description 3
- JZUHIOJYCPIVLQ-UHFFFAOYSA-N 2-methylpentane-1,5-diamine Chemical compound NCC(C)CCCN JZUHIOJYCPIVLQ-UHFFFAOYSA-N 0.000 claims description 2
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims 1
- 150000002513 isocyanates Chemical class 0.000 claims 1
- 229920002050 silicone resin Polymers 0.000 claims 1
- 229920002396 Polyurea Polymers 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 abstract 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 abstract 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 150000002009 diols Chemical class 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- -1 polytetramethylene Polymers 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 38
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920006306 polyurethane fiber Polymers 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 210000004177 elastic tissue Anatomy 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- HSSGNVITVKZRHD-UHFFFAOYSA-L magnesium octadecanoate octadecanoic acid Chemical group [Mg++].CCCCCCCCCCCCCCCCCC(O)=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HSSGNVITVKZRHD-UHFFFAOYSA-L 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- 229920000162 poly(ureaurethane) Polymers 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to the preparation method of a kind of porous fine denier spandex, it is characterized in that: (1) preparation process use polytetramethylene ether diol PTMG, 4,4 '-diphenylmethane diisocyanate 4,4 MDI, diamidogen, for raw material, step-by-step polymerization obtains polyureas carbamate DMAC solution；And add the function additives such as antioxidant, lubricant, delustering agent, ultraviolet absorber and antiblocking agent；Then, by porous spinneret, the polyureas carbamate solution containing auxiliary agent is carried out spray webbing stretching, high temperature drying, oils, just obtain mutual NA porous fine denier spandex between monofilament, more rolled molding, obtain porous spandex thread volume；(2) use process by sub-wire device, under certain draw conditions, porous fine denier spandex is divided into spandex monofilament one by one, subsequently into weaving unit accordingly, weaves.
Description
Technical Field
The invention relates to a preparation method of porous fine denier spandex, belonging to the technical field of polyurethane elastic fiber material manufacturing and weaving.
Background
Polyurethane elastic fiber is commonly called spandex, has excellent elastic performance and stress bearing performance, is similar to the industrial monosodium glutamate of textiles, and can remarkably improve the wearing comfort and the aesthetic degree of the textiles by weaving a small amount of spandex (the ammonia content is generally 6-22%) in the textiles, so the polyurethane elastic fiber becomes one of indispensable textile raw materials. Because the application of the fabric and the thickness degree of the fabric are different, the requirements on spandex specification (thickness degree) are also different, the most common spandex specification at present is 20D-1120D, wherein the 20D spandex is habitually called as 'fine denier' spandex because the yarn is extremely fine.
At present, a spandex spinning channel generally comprises 24-60 spinnerets, and each spinneret plate comprises 1-7 spinneret holes, so that for a fixed spinning channel, the production specification (i.e. denier) of each spinneret plate can influence the spandex production cost, i.e. the smaller the denier of spandex, the higher the production cost is, and the higher the spandex price is. Because customers have higher requirements on the elastic property of fine denier products, spandex mostly adopts a production technology only comprising a spinneret plate with 1 hole, the production efficiency is relatively low, the price of the product is 1-2 ten thousand yuan/ton higher than that of other specifications of products, the price of clothes is higher, and the required scale of the fine denier spandex product is limited to a certain extent; meanwhile, in order to reduce the production cost, downstream customers usually want to improve the spandex drafting multiple in the weaving and using process to reduce the spandex content in the fabric, so that the spandex in the fabric is more easily corroded by climate and is more easily damaged by chemistry, elasticity is lost, and the fabric is deformed. Therefore, the price of the spandex is reduced, and the market scale and the application prospect of the spandex are favorably improved.
Disclosure of Invention
The technical problem is as follows: the invention aims to solve the defects of the prior art and provides a preparation method of porous fine denier spandex.
The technical scheme is as follows: the invention relates to a preparation method of porous fine denier spandex, which is characterized by comprising the following steps: (1) the preparation process adopts polytetramethylene ether glycol PTMG, 4-diphenylmethane diisocyanate 4,4-MDI and diamine as raw materials, and polyurea formate DMAC solution is obtained through stepwise polymerization; and functional additives such as an antioxidant, a lubricant, a delustering agent, an ultraviolet absorbent, an anti-blocking agent and the like are added; then, carrying out spinning stretching, high-temperature drying and oiling on the polyurea-formic ether solution containing the auxiliary agent by using a porous spinneret plate to obtain porous fine-denier spandex which is not mutually adhered among monofilaments, and then winding and forming to obtain a porous spandex yarn coil; (2) in the using process, the porous fine denier spandex is divided into spandex monofilaments one by means of a filament divider under a certain drafting condition, and then the spandex monofilaments enter a corresponding weaving unit for weaving. The method specifically comprises the following steps:
the preparation method of the porous fine denier spandex comprises the following steps:
step 1. in the first reactor 1stReactor, adding polytetramethylene ether glycol PTMG and 4, 4-diphenylmethane diisocyanate 4,4-MDI at the same time, placing at 70-80 ℃ for fully carrying out prepolymerization reaction to obtain prepolymer PP capped by-NCO;
step 2, in a high-speed Dissolver Dissoller, N-Dimethylacetamide (DMAC) is used as a solvent to fully dissolve the prepolymer PP to obtain prepolymer solution PPs containing-NCO end capping;
step 3. in the second reactor 2ndIn Reactor, adopting mixed amine DMAC solution containing diamine chain extender and monoamine chain extender to simultaneously carry out chain growth and chain termination on PPs so as to obtain polyurea-based formate solution;
step 4, adding functional auxiliaries of an antioxidant, a lubricant, a delustering agent, an ultraviolet absorber and an anti-blocking agent into the polyurea-formate solution obtained in the step 3, fully stirring, dispersing and curing to obtain a polyurea-formate spinning solution;
step 5, in a dry spinning system, spinning and stretching, drying at high temperature and oiling the polyurea-urethane spinning solution by means of a porous spinneret plate, winding and forming porous fine-denier spandex filaments which are not adhered to each other among monofilaments, and obtaining a porous fine-denier spandex filament coil;
and 6, during weaving, dividing the porous fine-denier spandex filaments in the filament coil into spandex monofilaments one by means of a filament divider with a plurality of filament guide holes, and then sending the spandex monofilaments into corresponding weaving units to weave the spandex monofilaments into yarns or cloth.
Wherein,
the molecular weight of the polytetramethylene ether glycol is 1500-3000.
The content of-NCO end group in the prepolymer PP is 1.8 wt% -3.5 wt%.
Diamine in the diamine chain extender is one or more of ethylenediamine, 1, 2-propanediamine, 2-methyl-1, 5-pentanediamine or tetramethyl ethylenediamine; the monoamine in the monoamine terminator is one or more of dimethylamine, diethylamine, dipropylamine, ethanolamine or diethanolamine.
The anti-blocking agent is silicon dioxide or acrylic polyurethane, isocyanate group, silicon resin and epoxy polyurethane quadripolymer; the addition amount of the polyurethane bare fiber accounts for 0.1 wt% -1.5 wt% of the proportion of the polyurethane bare fiber.
The lubricant is stearic acid magnesium stearate, and the addition amount of the lubricant accounts for 0.1 to 1.5 weight percent of the bare spandex filament proportion.
The number of the holes of the multi-hole spinneret plate is 2-10; the number of the porous fine denier spandex holes is 2-10.
The oiling weight accounts for 2-10 wt% of the proportion of the spandex.
The number of the yarn guide holes of the yarn separator is 2-10.
Has the advantages that: the invention adds the anti-adhesion agent into the polyurethane stock solution to prepare the porous fine denier spandex which is not mutually adhered among monofilaments; and in the weaving process, the spandex filaments are divided into the spandex monofilaments one by adopting a porous filament divider, and then weaving is carried out. Compared with other preparation methods, the method has the following advantages: (1) the porous fine denier spandex is produced by adopting the porous spinneret plate, so that the production efficiency of the spandex can be obviously improved, the production cost and the product price are reduced, and the use field and the scale of the product are effectively enlarged; (2) the anti-adhesion agent is added into the polyurethane stock solution, so that the adhesion among spandex monofilaments is prevented, and the unwinding performance of spandex yarn coils can be improved; (3) in the weaving process, the filament dividing device is adopted to divide the spandex multifilaments in advance, so that filament breakage of spandex due to high draft multiple, monofilament adhesion and the like can be effectively reduced. Due to the advantages, the preparation of the porous fine denier spandex can be realized.
Drawings
Figure 1 shows a double-hole fine denier polyurethane fiber,
figure 2 shows a three-hole fine denier polyurethane fiber,
figure 3 is a schematic cross-sectional view of a filament separator,
figure 4 a single hole fine denier spandex.
The figure shows that: a double-hole spandex silk roll 1; an unwinding roller 2; a double-hole spandex filament 3; a double-hole filament separator 4; 5, single-hole spandex; a godet wheel 6; three-hole spandex yarn roll 7; three-hole spandex yarn 8; a three-hole filament separator 9; a wire guide hole 10; and (3) single-hole spandex silk rolls 11.
Detailed Description
The invention is described in detail below with reference to examples, which are not to be construed as limiting the invention in any way.
Example 1
Step 1, simultaneously feeding 237.1kg of polytetramethylene ether glycol (molecular weight 1800) and 53.9kg of 4, 4-diphenylmethane diisocyanate into a first reactor, reacting for 2hr at a reaction temperature of 70 ℃ to obtain a prepolymer (PP);
step 2, simultaneously conveying 291kg of prepolymer and 341.5kg of N, N-Dimethylacetamide (DMAC) solvent to a high-speed dissolving machine, and fully dissolving PP under the action of high-speed shearing force to obtain Prepolymer Solution (PPs);
step 3, preparing a polyurea-urethane polymer solution by simultaneously carrying out chain extension and chain termination on 632.5kg of prepolymer solution and 169.4kg of mixed amine DMAC solution (comprising 0.61kg of propylene diamine, 4.59kg of ethylene diamine, 0.58kg of diethylamine and 0.2kg of ethanolamine) under the condition of rapid stirring;
step 4, adding 16.86kg of solution containing antioxidant, lubricant, flatting agent and ultraviolet absorbent into the polyurea-formic ether solution obtained in the step 3, and simultaneously adding 4.8kg of SiO2Fully stirring, dispersing and curing the powder to obtain a polyurea-formate spinning solution;
step 5, in a dry spinning system, adjusting the discharge amount by means of a 2-hole spinneret plate, carrying out spinning stretching, high-temperature drying, oiling and winding forming on the polyurea-formate spinning solution, and thus preparing the double-hole fine-denier spandex yarn roll with non-adhesion monofilaments;
and 6, when the double-hole fine-denier polyurethane fiber is used, dividing the double-hole fine-denier polyurethane fiber into single fibers, respectively penetrating through 2 yarn guide holes of the double-hole yarn divider, and then entering a weaving unit for weaving.
Example 2
Step 1, simultaneously feeding 237.1kg of polytetramethylene ether glycol (molecular weight 1800) and 54.8kg of 4, 4-diphenylmethane diisocyanate into a first reactor, and reacting for 2hr at a reaction temperature of 70 ℃ to obtain a prepolymer (PP);
step 2, simultaneously conveying 291.8kg of prepolymer and 347.8kg of N, N-Dimethylacetamide (DMAC) solvent to a high-speed dissolving machine, and fully dissolving PP under the action of high-speed shearing force to obtain Prepolymer Solution (PPs);
step 3, 639.6kg of prepolymer solution and 172.5kg of mixed amine DMAC solution (comprising 0.59kg of propylene diamine, 4.48kg of ethylene diamine, 0.51kg of diethylamine and 0.21kg of ethanolamine) are subjected to chain extension and chain termination simultaneously under the condition of rapid stirring to prepare polyurea-formate polymer solution;
step 4, adding 17.12kg of solution containing antioxidant, lubricant, delustering agent and ultraviolet absorbent into the polyureaurethane solution obtained in the step 3, and simultaneously adding 5.2kg of SiO2Fully stirring, dispersing and curing the powder to obtain a polyurea-formate spinning solution;
step 5, in a dry spinning system, adjusting the discharge amount by means of a 3-hole spinneret plate, carrying out spinning stretching, high-temperature drying, oiling and winding forming on the polyurea-formate spinning solution, and thus preparing a three-hole spandex yarn roll with non-adhesive monofilaments;
and 6, when the three-hole spandex yarn weaving machine is used, dividing the three-hole spandex yarn into 3 monofilaments, respectively penetrating through 3 yarn guide holes of the three-hole yarn divider, and then entering a weaving unit for weaving.
Example 3
Step 1, simultaneously feeding 237.1kg of polytetramethylene ether glycol (molecular weight 1800) and 54.8kg of 4, 4-diphenylmethane diisocyanate into a first reactor, and reacting for 2hr at a reaction temperature of 70 ℃ to obtain a prepolymer (PP);
step 2, simultaneously conveying 291.8kg of prepolymer and 347.8kg of N, N-Dimethylacetamide (DMAC) solvent to a high-speed dissolving machine, and fully dissolving PP under the action of high-speed shearing force to obtain Prepolymer Solution (PPs);
step 3, preparing a polyurea-urethane polymer solution by simultaneously carrying out chain extension and chain termination on 639.6kg of prepolymer solution and 172.5kg of mixed amine DMAC solution (comprising 0.55kg of propylene diamine, 4.37kg of ethylene diamine, 0.49kg of diethylamine and 0.39kg of ethanolamine) under the condition of rapid stirring;
step 4, adding 17.55kg of quaternary copolymer containing antioxidant, lubricant, flatting agent and ultraviolet absorbent into the polyurea-formate solution obtained in the step 3, and simultaneously adding 4.54kg of quaternary copolymer containing modified acrylic polyurethane, isocyanate group, silicon resin and epoxy polyurethane, fully stirring, dispersing and curing to obtain polyurea-formate spinning solution;
step 5, in a dry spinning system, adjusting the discharge amount by means of a 4-hole spinneret plate, carrying out spinning stretching, high-temperature drying, oiling and winding forming on the polyurea-formate spinning solution, and thus preparing a four-hole fine-denier spandex yarn roll with non-adhesion monofilaments;
and 6, when the four-hole spandex is used, the four-hole spandex is divided into 4 monofilaments, the monofilaments respectively penetrate through 4 yarn guide holes of the four-hole yarn divider, and then the monofilaments enter a weaving unit for weaving.
Example 4
Step 1, simultaneously feeding 237.1kg of polytetramethylene ether glycol (molecular weight 1800) and 54.8kg of 4, 4-diphenylmethane diisocyanate into a first reactor, and reacting for 2hr at a reaction temperature of 70 ℃ to obtain a prepolymer (PP);
step 2, simultaneously conveying 291.8kg of prepolymer and 347.8kg of N, N-Dimethylacetamide (DMAC) solvent to a high-speed dissolving machine, and fully dissolving PP under the action of high-speed shearing force to obtain Prepolymer Solution (PPs);
step 3, preparing a polyurea-urethane polymer solution by simultaneously carrying out chain extension and chain termination on 639.6kg of prepolymer solution and 172.5kg of mixed amine DMAC solution (comprising 0.55kg of propylene diamine, 4.37kg of ethylene diamine, 0.49kg of diethylamine and 0.39kg of ethanolamine) under the condition of rapid stirring;
step 4, adding 17.55kg of quaternary copolymer containing antioxidant, lubricant, flatting agent and ultraviolet absorbent into the polyurea-formate solution obtained in the step 3, and simultaneously adding 4.54kg of quaternary copolymer containing modified acrylic polyurethane, isocyanate group, silicon resin and epoxy polyurethane, fully stirring, dispersing and curing to obtain polyurea-formate spinning solution;
step 5, in a dry spinning system, adjusting the discharge amount by means of a 5-hole spinneret plate, carrying out spinning stretching, high-temperature drying, oiling and winding forming on the polyurea-formate spinning solution, and thus preparing a five-hole spandex yarn coil with non-adhesive monofilaments;
and 6, when the five-hole spandex is used, dividing the five-hole spandex into 5 monofilaments, respectively penetrating through 5 yarn guide holes of the five-hole spandex divider, and then entering a weaving unit for weaving.
Claims (3)
1. A preparation method of porous fine denier spandex is characterized by comprising the following steps:
step 1. in the first reactor 1stReactor, adding polytetramethylene ether glycol PTMG and 4, 4-diphenylmethane diisocyanate 4,4-MDI at the same time, placing at 70-80 ℃ for fully carrying out prepolymerization reaction to obtain prepolymer PP capped by-NCO;
step 2, in a high-speed Dissolver Dissoller, N-Dimethylacetamide (DMAC) is used as a solvent to fully dissolve the prepolymer PP to obtain prepolymer solution PPs containing-NCO end capping;
step 3. in the second reactor 2ndIn Reactor, adopting mixed amine DMAC solution containing diamine chain extender and monoamine terminator to simultaneously carry out chain growth and chain termination on PPs so as to obtain polyurea-formate solution;
step 4, adding functional auxiliaries of an antioxidant, a lubricant, a delustering agent, an ultraviolet absorber and an anti-blocking agent into the polyurea-formate solution obtained in the step 3, fully stirring, dispersing and curing to obtain a polyurea-formate spinning solution;
step 5, in a dry spinning system, spinning and stretching, drying at high temperature and oiling the polyurea-urethane spinning solution by means of a porous spinneret plate, winding and forming porous fine-denier spandex filaments which are not adhered to each other among monofilaments, and obtaining a porous fine-denier spandex filament coil;
step 6, during weaving, dividing the porous fine-denier spandex filaments in the filament coil into spandex monofilaments one by means of a filament divider with a plurality of filament guiding holes, and then sending the spandex monofilaments into corresponding weaving units to weave the spandex monofilaments into yarns or cloth;
wherein:
the molecular weight of the polytetramethylene ether glycol is 1500-3000;
the content of-NCO end group in the prepolymer PP is 1.8 to 3.5 weight percent;
diamine in the diamine chain extender is one or more of ethylenediamine, 1, 2-propanediamine, 2-methyl-1, 5-pentanediamine or tetramethyl ethylenediamine; monoamines in the monoamine terminators are one or more of dimethylamine, diethylamine, dipropylamine, ethanolamine or diethanolamine;
the anti-blocking agent is silicon dioxide or quadripolymer of acrylic polyurethane, isocyanate, silicone resin and epoxy polyurethane; the addition amount of the polyurethane bare fiber accounts for 0.1 wt% -1.5 wt% of the proportion of the polyurethane bare fiber.
2. The method for preparing porous fine denier spandex according to claim 1, wherein the number of holes of the porous spinneret plate is 2-10; the number of the porous fine denier spandex holes is 2-10.
3. The method for preparing porous fine denier spandex according to claim 1, wherein the number of the yarn guide holes of the yarn separator is 2-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410576663.8A CN104357943B (en) | 2014-10-24 | 2014-10-24 | A kind of preparation method of porous fine denier spandex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410576663.8A CN104357943B (en) | 2014-10-24 | 2014-10-24 | A kind of preparation method of porous fine denier spandex |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104357943A CN104357943A (en) | 2015-02-18 |
| CN104357943B true CN104357943B (en) | 2016-08-17 |
Family
ID=52525243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410576663.8A Active CN104357943B (en) | 2014-10-24 | 2014-10-24 | A kind of preparation method of porous fine denier spandex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104357943B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651974B (en) * | 2015-03-13 | 2017-01-04 | 浙江华峰氨纶股份有限公司 | A kind of super fine denier spandex fibre and preparation method thereof |
| CN106757485B (en) * | 2016-11-23 | 2019-07-02 | 华峰重庆氨纶有限公司 | A kind of preparation method of high drawing spandex fibre |
| CN107956127B (en) * | 2017-12-12 | 2020-04-24 | 浙江华峰氨纶股份有限公司 | Preparation method of polyurethane elastic fiber with skin-core structure |
| CN108517580B (en) * | 2018-03-14 | 2021-06-22 | 江阴中绿化纤工艺技术有限公司 | Method for recycling spandex waste liquid |
| CN110923844B (en) * | 2019-12-16 | 2022-06-03 | 华峰化学股份有限公司 | Preparation method of spandex easy to unwind |
| CN115896973A (en) * | 2022-12-14 | 2023-04-04 | 郑州圣莱特空心微珠新材料有限公司 | Low-density anti-aging fiber and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533408A (en) * | 2001-07-24 | 2004-09-29 | ά | Improved spandex compositions |
| CN102362020A (en) * | 2009-03-23 | 2012-02-22 | 英威达技术有限公司 | Elastic fiber containing an anti-tack additive |
| CN202830259U (en) * | 2012-05-27 | 2013-03-27 | 桑建军 | Device special for filament separation of spandex |
| CN103710786A (en) * | 2013-12-18 | 2014-04-09 | 浙江华峰氨纶股份有限公司 | Preparation method of polyurethane raw liquid for high-speed spinning |
-
2014
- 2014-10-24 CN CN201410576663.8A patent/CN104357943B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533408A (en) * | 2001-07-24 | 2004-09-29 | ά | Improved spandex compositions |
| CN102362020A (en) * | 2009-03-23 | 2012-02-22 | 英威达技术有限公司 | Elastic fiber containing an anti-tack additive |
| CN202830259U (en) * | 2012-05-27 | 2013-03-27 | 桑建军 | Device special for filament separation of spandex |
| CN103710786A (en) * | 2013-12-18 | 2014-04-09 | 浙江华峰氨纶股份有限公司 | Preparation method of polyurethane raw liquid for high-speed spinning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104357943A (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104357943B (en) | A kind of preparation method of porous fine denier spandex | |
| JP6293172B2 (en) | Two component spandex with separable filaments showing low friction | |
| CN106757485B (en) | A kind of preparation method of high drawing spandex fibre | |
| CN104153033B (en) | A kind of preparation method of porous easy dyeing spandex | |
| CN103710786B (en) | A kind of preparation method of the polyurethane stock solution for high speed spinning | |
| CN103436983B (en) | High-resilience urethane elastic fiber as well as preparation method thereof | |
| JP2012505975A (en) | 2 component spandex | |
| CN106884216B (en) | Spandex fiber having improved adhesion characteristics to hot melt adhesive and method for manufacturing the same | |
| CN108977929B (en) | Preparation method of moisture-absorbing and sweat-releasing polyurethane elastic fiber with skin-core structure | |
| CN112442755B (en) | Preparation method of high-resilience Gao Junyi high-temperature-resistant spandex fiber | |
| CN101760798B (en) | Manufacturing method of spandex heavy denier yarn | |
| CN110923844B (en) | Preparation method of spandex easy to unwind | |
| CN105483856B (en) | A kind of method that in-situ polymerization prepares ageing resistance by ultraviolet light spandex | |
| CN107641847B (en) | Preparation method of polyurethane elastic fiber with excellent adhesive force and dyeing property | |
| CN103173890A (en) | Preparation method of high monofilament cohesive force polyurethane elastic fiber | |
| CN113774522A (en) | High-elongation high-strength polyurethane elastic fiber and preparation method thereof | |
| CN102586944A (en) | Method for increasing cohesive force between spandex monofilaments | |
| KR101578156B1 (en) | Polyurethanurea elastic fiber having an excellent indexes of evenness and power and method of manufacturing the same | |
| KR101620573B1 (en) | Polyurethanurea elastic fiber with good unwinding performance and method of manufacturing the same | |
| CN103436984B (en) | A kind of method prepared by 270 DENIER and above polyurethane elastomeric fiber | |
| KR101675280B1 (en) | Polyurethanurea elastic fiber and method of manufacturing the same | |
| CN113403709B (en) | Composite spandex and preparation method thereof | |
| CN109267169B (en) | Preparation method of polyethylene polyamine modified polyurethane elastic fiber | |
| CN115838976A (en) | High cohesive force spandex multifilament and production method thereof | |
| CN115537962A (en) | Spandex for nylon-spandex fabric with uniform evenness and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1788, Dongshan Economic Development Zone, Ruian, Wenzhou, Zhejiang Patentee after: Huafeng Chemical Co.,Ltd. Address before: No. 1788, Dongshan Economic Development Zone, Ruian, Wenzhou, Zhejiang Patentee before: ZHEJIANG HUAFENG SPANDEX Co.,Ltd. |