CN112708175A - Composite functional master batch and preparation method and application thereof - Google Patents
Composite functional master batch and preparation method and application thereof Download PDFInfo
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- 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
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- 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
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/06—Copolymers with styrene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a composite functional master batch and a preparation method and application thereof, wherein butylbenzene copolymer resin with a certain particle size is used as a matrix material of the functional master batch, special mineral oil is used for oil charge, the fluidity of the butylbenzene copolymer resin is improved, and further, the composite functional master batch and polypropylene are jointly used for preparing melt-blown non-woven fabrics, so that the tearing strength of the melt-blown non-woven fabrics is improved, the melt-blown non-woven fabrics are soft, fluffy, high in filtering efficiency, not brittle after being placed for a long time, uniform in cloth cover, free of crystal points and flying flowers, high in toughness and capable of being widely applied to preparation of air, liquid filtering materials, isolating materials, absorbing materials, mask materials, heat-insulating materials, oil absorbing materials, wiping cloth and the.
Description
Technical Field
The invention relates to the technical field of high polymer materials, and particularly relates to a composite functional master batch and a preparation method and application thereof.
Background
The melt-blown non-woven fabric is a common filtering material and is widely applied to the fields of air or liquid filtering materials, isolating materials, absorbing materials, mask materials, heat-insulating materials, oil-absorbing materials, wiping cloth and the like. The melt-blown non-woven fabric mainly uses melt-blown polypropylene as a raw material, but the melt-blown non-woven fabric has the quality problems of hard hand feeling, tear resistance, cracking even after folding, and hard and brittle cloth surface after long-term storage (about 30 days). These problems not only lead to difficult processing when preparing the mask, but also difficult to ensure the filtration and separation function of the filter material after stress cracking. In view of this, there is an urgent need for a meltblown nonwoven fabric which is not brittle after long-term storage, has good softness, and has high tear strength.
Generally, a special modifying material for melt-blown is adopted to modify melt-blown non-woven fabrics, the melt-blown modifying material mostly uses high-melt index polypropylene as a matrix to meet the fluidity, but the molecular weight is low, and the monofilament toughness is not enough in the high-temperature processing and spinning process, so that an elastic toughening agent such as co-polypropylene or POE is generally added to increase the toughness, for example, Chinese patent CN111499979A (application publication No. 2020.8.7) discloses a melt-blown polypropylene composition, a preparation method and application thereof, the high-melt index polypropylene is used as the matrix, polybutylene resin is used as the elastic toughening agent to play plasticizing and lubricating effects, but the polybutylene resin has low melt index, is difficult to be uniformly mixed with the high-melt index polypropylene, the problems of easy brittleness and low tearing strength of the melt-blown non-woven fabrics are not obviously improved, the problems of rough and uneven cloth surfaces, crystal points and flying are also occurred, and the elastic toughening agent can be crosslinked under the initiation of residual free radicals, there is a risk of clogging the spinneret orifices during the preparation process.
Disclosure of Invention
The invention aims to solve the technical problems that the existing melt-blown non-woven fabric is easy to become crisp, poor in softness, low in tearing strength and prone to problems of rough and uneven cloth cover, crystal points and flying flowers, and provides the composite functional master batch which is further used for preparing the melt-blown non-woven fabric, can be placed for a long time without becoming crisp, soft and fluffy, is high in filtering efficiency and tearing strength, does not have the problems of rough and uneven cloth cover, crystal points and flying flowers, is high in toughness, and does not have the risk of blocking a spinneret orifice in the preparation process.
The invention also aims to provide a preparation method of the composite functional master batch.
The invention also aims to provide application of the composite functional master batch.
The above purpose of the invention is realized by the following technical scheme:
a composite functional master batch comprises the following components in parts by mass:
65-85 parts of styrene-butadiene copolymer resin;
5-30 parts of special mineral oil;
0.5-10 parts of electret powder;
0.05-2 parts of an acid acceptor;
0.05-2 parts of an antioxidant;
0.01-5 parts of a processing aid;
wherein the average rubber particle size of the styrene-butadiene copolymer resin is 20-100 nm; the kinematic viscosity of the special mineral oil at 40 ℃ is 20-50 mm2/S。
The invention takes the styrene-butadiene copolymer resin with smaller grain diameter as the matrix material of the functional master batch, on one hand, the special mineral oil with certain kinematic viscosity is selected, the chain segment of the styrene-butadiene copolymer resin can be enlarged, the chain segment can be fully extended when stretching, the fluidity of the styrene-butadiene copolymer resin is improved to the level of high-melt index polypropylene after oil filling (namely soaking in the special mineral oil to swell), the good flowing dispersibility in the subsequent process of preparing the melt-blown non-woven fabric is ensured, the styrene-butadiene copolymer resin can be uniformly mixed with other components, the problems of brittleness and tearing strength of the melt-blown non-woven fabric can be better improved, the problems of uneven cloth surface, crystal point and rough flying are avoided, on the other hand, the styrene-butadiene copolymer resin also has the function of toughening, in addition, an acid absorbing agent and an antioxidant are added, the residual free radical of the system is effectively stopped, and, the risk of blocking a spinneret plate is avoided, the processing flow stability of a system is further ensured, and the generation of rough and uneven cloth surface, crystal points and flying is also avoided; therefore, the composite functional master batch prepared by the invention is further used for preparing melt-blown non-woven fabrics, can improve the tearing strength, is soft and fluffy, has high filtering efficiency, is not easy to become crisp after being placed for a long time, and has uniform cloth surface, no crystal points and no flying.
Preferably, the composition comprises the following components in parts by mass:
75-85 parts of styrene-butadiene copolymer resin;
10-20 parts of special mineral oil;
5-10 parts of electret powder;
0.1-1 part of an acid acceptor;
0.1-0.2 part of antioxidant;
0.3-0.8 part of processing aid.
Preferably, the average rubber particle size of the styrene-butadiene copolymer resin is 50 to 100 nm.
Preferably, the styrene-butadiene copolymer resin is one or more of styrene-butadiene-styrene copolymer elastomer (SBS), styrene-butadiene copolymer resin (SBC), and styrene- (hydrogenated ethylene-butylene) -styrene block copolymer (SEBS).
Preferably, the kinematic viscosity of the special mineral oil at 40 ℃ is 30-45 mm2/S。
Preferably, the special mineral oil is one or more of aromatic hydrocarbon white mineral oil, paraffin base white mineral oil and naphthene white mineral oil.
Preferably, the melt index of the styrene-butadiene copolymer resin is 30-100 g/10min at 230 ℃ under the test condition of 2.16 kg.
Preferably, the melt index of the styrene-butadiene copolymer resin is 40-80 g/10min at 230 ℃ under the test condition of 2.16 kg.
The acid acceptor of the invention includes but is not limited to one or more of hindered amine light stabilizer, nano-scale hydrotalcite, fatty acid salt and nano zeolite.
The electret powder of the invention comprises but is not limited to inorganic electret materials and/or organic electret materials.
The inorganic electret material provided by the invention comprises one or more of but not limited to nano tourmaline powder, nano silicon dioxide, nano polysilsesquioxane powder, silicon-based silicon nitride and silicon-based silicon dioxide.
The organic electret material provided by the invention comprises one or more of polyvinylidene fluoride, polytetrafluoroethylene, polyvinylidene fluoride and co-fluorinated compound.
The antioxidant of the present invention includes, but is not limited to, one or more of hindered phenol antioxidants, phosphite antioxidants, amine antioxidants, sulfur antioxidants, or metal salt antioxidants.
Preferably, the antioxidant is antioxidant 1010 and/or antioxidant 168.
More preferably, the antioxidant is the antioxidant 1010 and the antioxidant 168 in a mass ratio of 1: 2.
The processing aid provided by the invention comprises one or more of a dispersing agent and a nucleating agent.
The dispersant of the invention comprises one or more of erucamide, oleamide, EBS amide, PE wax and stearate.
The nucleating agent provided by the invention comprises but is not limited to one or more of carboxylate nucleating agent, phosphate nucleating agent or sorbitol nucleating agent.
The invention protects the preparation method of the composite functional master batch, which comprises the following steps:
and uniformly mixing the styrene-butadiene copolymer resin and the special mineral oil until the styrene-butadiene copolymer resin swells, then adding the electret powder, the acid-absorbing agent, the antioxidant and the processing aid, uniformly mixing to obtain a premix, and performing melt extrusion and granulation to obtain the composite functional master batch.
Preferably, the temperature of the melt extrusion is 160-220 ℃.
The invention also protects the application of the composite functional master batch in preparing the melt-blown non-woven fabric.
Preferably, the method comprises the following steps:
and uniformly mixing 95-100 parts of polypropylene and 3-10 parts of composite functional master batch, mixing and melting at 220-260 ℃, spinning, performing electret treatment, and rolling to obtain the melt-blown non-woven fabric.
The polypropylene in the invention includes but is not limited to one or more of homo-polypropylene, co-polypropylene and melt blown polypropylene.
A melt-blown non-woven fabric comprises the composite functional master batch and polypropylene.
Preferably, the polypropylene composite material comprises 3-10 parts by mass of the composite functional master batch and 95-100 parts by mass of polypropylene.
More preferably, the polypropylene composite material comprises 5-10 parts by mass of the composite functional master batch and 95 parts by mass of polypropylene.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a composite functional master batch, which takes styrene-butadiene copolymer resin with a certain particle size as a matrix material of the functional master batch, improves the fluidity of the master batch by using special mineral oil, further prepares melt-blown non-woven fabrics by using the composite functional master batch and polypropylene together, improves the tearing strength and softness of the melt-blown non-woven fabrics, and has soft and fluffy hand feeling, high filtering efficiency and tearing resistance; the melt-blown non-woven fabric has the advantages of no crispness after long-term storage, uniform cloth cover, no crystal points and no flying, and higher toughness, and can be widely applied to the preparation of air, liquid filtering materials, isolating materials, absorbing materials, mask materials, heat-insulating materials, oil-absorbing materials, wiping cloth and the like.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the examples in any way. The starting reagents employed in the examples of the present invention are, unless otherwise specified, those that are conventionally purchased.
The raw materials used in the examples and comparative examples were as follows:
styrene-butadiene copolymer resin a: SL-825, melt index 40g/10min (230 ℃/2.16kg), rubber average particle size 60nm, Mich-Amur Co;
styrene-butadiene copolymer resin B: the average particle size of the rubber is 20 nm; melt index of 40g/10min (230 ℃/2.16kg), Town Zhonghe company;
styrene-butadiene copolymer resin C: the particle size of the rubber is 100 nm; melt index of 40g/10min (230 ℃/2.16kg), Town Zhonghe company;
styrene-butadiene copolymer resin D: the particle size of the rubber is 10 nm; melt index of 40g/10min (230 ℃/2.16kg), Town Zhonghe company;
styrene-butadiene copolymer resin E: the particle size of the rubber is 110 nm; melt index of 40g/10min (230 ℃/2.16kg), Town Zhonghe company;
copolymerized polypropylene: PP UT8012M, melt flow rate 11g/10min (230 ℃/2.16kg), medium petrochemical metallocene;
melt-blown polypropylene: PP-91500, the melt flow rate is 1500g/10min (230 ℃/2.16kg), and the product is prepared by self;
a toughening agent: POE, fusabond 493, dow chemistry;
naphthenic white mineral oil A: cosmetic white oil with a kinematic viscosity at 40 deg.C of 45mm2(S), a special chemical engineering;
naphthenic white mineral oil B: cosmetic white oil with a kinematic viscosity at 40 deg.C of 20mm2(S), a special chemical engineering;
naphthenic white mineral oil C: cosmetic white oil with kinematic viscosity of 50mm at 40 deg.C2(S), a special chemical engineering;
aromatic white mineral oil D: cosmetic white oil with a kinematic viscosity at 40 deg.C of 20mm2(S), a special chemical engineering;
paraffin-based white mineral oil E: cosmetic white oil with kinematic viscosity of 60mm at 40 deg.C2(S), a special chemical engineering;
acid-absorbing agent: hindered amine Chimassorb 944DF, basf;
nano tourmaline powder: MC-80, Shijiazhuang Ming Chi color Sand group Co., Ltd;
polytetrafluoroethylene: PTFE-0141X, New Material science and technology Ltd of Nanjing Tianshi;
antioxidant: antioxidant 1010 and antioxidant 168 in a mass ratio of 1:2, available from Riandong New materials Ltd;
dispersing agent: calcium stearate, BS-3818, Zhongshan Ming Tai chemical company.
Example 1
A composite functional master batch is prepared from the components in parts by mass shown in Table 1.
The preparation method of the composite functional master batch comprises the following steps:
uniformly mixing the styrene-butadiene copolymer resin and the special mineral oil until the styrene-butadiene copolymer resin swells, then adding the electret powder, the acid-absorbing agent, the antioxidant and the dispersing agent to be uniformly mixed to obtain a premix, and performing melt extrusion at 160 ℃ through a double-screw extruder, granulation and drying to obtain the composite functional master batch.
Examples 2 to 9 and comparative examples 1 to 6
The components and their parts by mass of examples 2 to 9 and comparative examples 1 to 6 are shown in Table 1 below, and the preparation method is the same as that of example 1.
Table 1 shows the components and the parts by mass of the composite functional master batch of each example and comparative example
Preparing melt-blown non-woven fabric:
the composite functional master batches and polypropylene prepared in the above examples and comparative examples are added into a screw extruder according to the content in the following table 2, melted and extruded at 220 ℃, then the mixture enters a melt-blowing die head through a material path and a metering pump, a melt meets high-speed hot air at the outlet of the melt-blowing die head, and is drawn and refined into fibers under the action of the high-speed hot air, then the fibers are randomly deposited on a net curtain to form melt-blown non-woven fabrics, and then the non-woven fabrics are subjected to corona discharge electret treatment on line, wherein the electret voltage is 30KV, and the electret distance is 6cm, so that the melt-blown non-woven fabrics can be.
TABLE 2 raw materials for preparing melt-blown nonwoven fabrics and their parts by mass
Performance testing
1. Test method
(1) The gram weight of the melt-blown non-woven fabric of samples 1-18 prepared in the embodiments and the comparative examples is controlled according to the FZ/T60003-.
(2) Elongation at break test Standard FZ/T60005-91 test.
(3) Particle filtration efficiency: the electret voltage is 30KV, and the electret distance is 6 cm; obtaining the electret polypropylene melt-blown non-woven fabric, and keeping the gram weight at (25 +/-3) g/m2And (4) carrying out a filtration efficiency test, and testing the particle filtration efficiency to be standard YY 0469-2011.
(4) Elongation at break in the machine direction after aging: the aging condition of the product is that the product is placed for 30 days at 50 +/-3 ℃ and 50 +/-5% relative humidity, then the product is placed for at least 4 hours at room temperature, and the longitudinal elongation at break after aging is tested according to the filtration efficiency test standard.
(5) Hand feeling and appearance: melt-blown polypropylene composite electret materials are made into melt-blown non-woven fabrics, and hand feeling is evaluated through touching with hands; the appearance was evaluated by visual observation.
(6) Softness test Standard GB/T8942-2016.
2. Test results
TABLE 3 Performance test results of melt-blown nonwoven fabrics prepared in examples and comparative examples
As can be seen from table 3, the grammage per unit area of the melt-blown nonwoven fabrics obtained in the examples and comparative examples was substantially the same, and the basis for comparison was obtained.
From the examples 1-3, it can be seen that with the increase of the content of the styrene-butadiene copolymer resin, the composite functional master batch prepared by the invention is further used for preparing the melt-blown non-woven fabric, the longitudinal breaking elongation of the melt-blown non-woven fabric is in an increasing trend, the toughness is high, and the cloth cover in the examples is soft and fluffy in hand feeling, high in filtering efficiency and resistant to tearing; from examples 4-9, it can be seen that the melt-blown nonwoven fabric prepared in the range of suitable rubber particle size and the viscosity of the special white mineral oil has the same effect as that of example 1.
As can be seen from the comparison between the example 1 and the comparative example 1, the special white mineral oil can improve the plasticizing and toughening effects of the composite master batch, and can avoid the occurrence of cloth surface crystal points due to uneven spinning caused by poor melt fluidity; as can be seen from the comparison between the example 1 and the comparative example 2, the presence of the acid absorbent and the antioxidant can effectively protect the uniformity and the flow stability of the toughened styrene-butadiene elastomer resin system, ensure that the system does not generate the risk of rubber crosslinking, avoid the reduction of the crystal point and the elongation rate during processing and avoid the risk of blockage of a spinneret plate.
As can be seen from the comparison between example 1 and comparative example 3, the particle size of the rubber adopting the styrene-butadiene elastomer resin system is too small, the toughening effect cannot be achieved, and the prepared melt-blown fabric has low initial elongation and is brittle after being placed; in contrast, in comparative example 4, when a larger rubber particle size system was used, there was a possibility that crystal points appeared on the cloth surface produced due to crosslinking, and the filtration efficiency of the particles was adversely affected.
By combining the example 1 and the comparative example 5, the kinematic viscosity of the white mineral oil is too low, and the spinning is not uniform due to insufficient fluidity of the toughening master batch in the melt-blowing process, so that the cloth elongation is lower than that of the example 1, and crystal points appear on the surface; in comparative example 6, white mineral oil with too high viscosity was used, and the melt fluidity during melt blowing was locally too high, resulting in excessive melt draft, occurrence of a large number of crystal points and fly, and influence on the product quality.
As can be seen from examples 1-4 and comparative example 7, compared with the original PP melt-blown system, the tear strength, the elongation at break and the softness of the material are greatly improved, and the material is not easy to become brittle after aging. As can be seen from the examples 1-4 and the comparative example 8, the polypropylene melt-blown composite copolymerized polypropylene system has the advantages that the copolymerized polypropylene with the toughening effect originally in the plastic blending system does not toughen the melt-blown fabric due to low melt index, and the appearance and the hand feeling after melt-blowing are poor. As can be seen from the comparison between example 1 and comparative example 9, the toughening agent resin of the invention has better uniformity and good hand feeling than the toughening agent resin with large particle rubber particle size used in the original PP melt-blown system, and avoids the problems of crystal points and insufficient local strength during processing.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The composite functional master batch is characterized by comprising the following components in parts by mass:
65-85 parts of styrene-butadiene copolymer resin;
5-30 parts of special mineral oil;
0.5-10 parts of electret powder;
0.05-2 parts of an acid acceptor;
0.05-2 parts of an antioxidant;
0.01-5 parts of a processing aid;
wherein the average rubber particle size of the styrene-butadiene copolymer resin is 20-100 nm; the kinematic viscosity of the special mineral oil at 40 ℃ is 20-50 mm2/S。
2. The composite functional masterbatch according to claim 1, comprising the following components in parts by mass:
75-85 parts of styrene-butadiene copolymer resin;
10-20 parts of special mineral oil;
5-10 parts of electret powder;
0.1-1 part of an acid acceptor;
0.1-0.2 part of antioxidant;
0.3-0.8 part of processing aid.
3. The composite functional masterbatch according to claim 1 or 2, wherein the styrene-butadiene copolymer resin has a rubber particle size of 50 to 100 nm.
4. The composite functional masterbatch according to claim 1, wherein the kinematic viscosity of the special mineral oil at 40 ℃ is 30-45 mm2/S。
5. The composite functional masterbatch according to claim 1, wherein the styrene-butadiene copolymer resin has a melt index of 30-100 g/10min at 230 ℃ under a test condition of 2.16 kg.
6. The composite functional masterbatch of claim 1, wherein the styrene-butadiene copolymer resin is one or more of styrene-butadiene-styrene copolymer elastomer, styrene-butadiene copolymer resin, and styrene- (hydrogenated ethylene-butylene) -styrene block copolymer.
7. The composite functional masterbatch according to claim 1, wherein the acid-absorbing agent is one or more of hindered amine light stabilizer, nano-hydrotalcite, fatty acid salt, and nano zeolite.
8. The preparation method of the composite functional masterbatch of any one of claims 1 to 7, characterized by comprising the following steps:
and uniformly mixing the styrene-butadiene copolymer resin and the special mineral oil until the styrene-butadiene copolymer resin swells, then adding the electret powder, the acid-absorbing agent, the antioxidant and the processing aid, uniformly mixing to obtain a premix, and performing melt extrusion and granulation to obtain the composite functional master batch.
9. The use of the composite functional masterbatch of any one of claims 1 to 7 in the preparation of melt-blown nonwoven fabrics.
10. A melt-blown non-woven fabric, which is characterized by comprising the composite functional masterbatch of any one of claims 1 to 7 and polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011467569.0A CN112708175B (en) | 2020-12-14 | 2020-12-14 | Composite functional master batch and preparation method and application thereof |
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| CN114214786A (en) * | 2021-11-25 | 2022-03-22 | 苏州多瑈新材料科技有限公司 | One-step method water electret preparation method of melt-blown filter material |
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| CN114214786A (en) * | 2021-11-25 | 2022-03-22 | 苏州多瑈新材料科技有限公司 | One-step method water electret preparation method of melt-blown filter material |
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