CN117005212A - Breathable and soft textile fabric and preparation method thereof - Google Patents

Breathable and soft textile fabric and preparation method thereof Download PDF

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Publication number
CN117005212A
CN117005212A CN202310984562.3A CN202310984562A CN117005212A CN 117005212 A CN117005212 A CN 117005212A CN 202310984562 A CN202310984562 A CN 202310984562A CN 117005212 A CN117005212 A CN 117005212A
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China
Prior art keywords
fabric
stock solution
diisocyanate
mass
parts
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CN202310984562.3A
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Chinese (zh)
Inventor
王文标
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Guangzhou Twist Sweet Textile Technology Co ltd
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Guangzhou Twist Sweet Textile Technology Co ltd
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Priority to CN202310984562.3A priority Critical patent/CN117005212A/en
Publication of CN117005212A publication Critical patent/CN117005212A/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/147—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the isocyanates used
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0034—Polyamide fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/142—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer
    • D06N3/144—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer with polyurethane and polymerisation products, e.g. acrylics, PVC
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/146—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the macromolecular diols used
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/029—Fluoropolymer fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D06N2209/123—Breathable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention provides a breathable and soft textile fabric, which is prepared from thermoplastic fiber fabric and polyurethane coating stock solution. The thermoplastic fiber fabric is preferably prepared from nylon 6 and polyvinylidene fluoride, and the polyurethane film stock solution is preferably prepared by adding the polyvinylidene fluoride into the reaction stock solution and matching with other components, so that a proper micropore structure is formed in the curing process of the film stock solution, the air permeability is improved, and the mechanical strength of the film stock solution can be improved when the film stock solution is coated on the fiber fabric. The invention also provides a preparation method of the textile fabric.

Description

Breathable and soft textile fabric and preparation method thereof
Technical Field
The invention relates to a breathable and soft textile fabric and a preparation method thereof.
Background
With the improvement of life quality of people, the functional requirements on clothes or fabrics are also higher and higher. The air permeability and the comfort are important fabric performance indexes, and a certain gap exists between the common fabric in the current market and the demands of people. The fabric prepared from the nylon fibers has the characteristics of softness, comfort and good touch feeling, and is popular with consumers, but the fabric prepared from the nylon fibers is poor in air permeability, so that sweat and sweat are difficult to timely discharge and quickly evaporate in the process of exercise or labor, and discomfort is caused to the body.
Patent CN111826968A discloses a functional textile fabric and a preparation method thereof, and the technical scheme provides a development idea of coating polyurethane film stock solution on the fabric to further improve the ultraviolet resistance of the fabric, but does not disclose how to further improve the air permeability and touch feeling of the textile fabric.
Patent CN113430668A discloses ice-feeling quick-drying fiber and a preparation method thereof, and ice-feeling quick-drying fabric and a preparation method thereof, and the technical scheme is that titanium white, polytetrafluoroethylene and nylon 6 are blended to modify nylon 6, and the prepared fiber has good touch feeling. However, the technical scheme does not solve the problems that the prepared fabric has good air permeability and good mechanical properties.
Therefore, it is desirable to provide a breathable and soft textile fabric that has good mechanical properties.
Disclosure of Invention
The invention provides a breathable and soft textile fabric, which is prepared from thermoplastic fiber fabric and polyurethane coating stock solution. The thermoplastic fiber fabric is preferably prepared from nylon 6 and polyvinylidene fluoride, and the polyurethane film stock solution is preferably prepared by adding the polyvinylidene fluoride into the reaction stock solution and matching with other components, so that a proper micropore structure is formed in the curing process of the film stock solution, the air permeability is improved, and the mechanical strength of the film stock solution can be improved when the film stock solution is coated on the fiber fabric. The invention also provides a preparation method of the textile fabric.
A breathable and soft textile fabric, which is prepared from thermoplastic fiber fabric and polyurethane film stock solution;
the preparation method of the polyurethane film stock solution comprises the following steps:
step one, introducing vinylidene fluoride into an organic solvent to obtain an organic solution containing the vinylidene fluoride for later use;
step two, adding polyol and diisocyanate into a reactor under nitrogen atmosphere, starting stirring, controlling the temperature of the reactor to be 60-90 ℃, preferably 70-85 ℃, and reacting for 2-4 hours;
and thirdly, controlling the temperature of the reactor at 40-60 ℃, preferably 50-60 ℃, adding a chain extender, a catalyst and the organic solution containing vinylidene fluoride, reacting for 1-3 hours, cooling to normal temperature, uniformly stirring and discharging.
According to the invention, vinylidene fluoride is introduced into an organic solvent and added into polyurethane film stock solution, the film stock solution is coated on the thermoplastic fiber fabric, and the film stock solution is matched with other components in the curing process of the film stock solution, so that micropores with proper sizes and numbers can be formed, and the air permeability of the fabric is improved while the mechanical properties are maintained.
In the preparation method of the polyurethane coating stock solution, a certain amount of vinylidene fluoride is introduced into an organic solvent, and the method does not represent that the introduced vinylidene fluoride can be completely dissolved in the organic solvent, and the technical effect of the invention is not affected by a small amount of vinylidene fluoride which is not dissolved in the organic solvent.
The diisocyanate may be selected from isocyanate compounds commonly used in the art. Preferably, the diisocyanate is one or more of diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, 4' -dicyclohexylmethane diisocyanate and hexamethylene diisocyanate, more preferably isophorone diisocyanate.
The polyol may be selected from polymeric polyols commonly used in the art, such as polyester polyols, polyether polyols, and the like. Preferably a polymeric polyol having a functionality of two, more preferably one or more of polyethylene glycol, polypropylene glycol and polytetrahydrofuran ether glycol. In a preferred embodiment of the present invention, the polyol is polytetrahydrofuran ether glycol having a number average molecular weight of 1000 to 2000. Among them, the polytetrahydrofuran ether glycol with the number average molecular weight of 2000 can be selected to obtain a sample with better technical effect.
The chain extender is a binary small molecule chain extender and/or a ternary small molecule chain extender. Preferably, the chain extender is a binary small molecule chain extender or a combination of a binary small molecule chain extender and a ternary small molecule chain extender. Examples of the small binary molecule chain extender include, but are not limited to, methyl propylene glycol, 1, 2-propylene glycol, 1, 3-propylene glycol, diethylene glycol, dipropylene glycol, ethylene glycol, 1, 4-butanediol, etc., and examples of the small ternary molecule chain extender include, but are not limited to, glycerol, trimethylolpropane, trihydroxycyclohexane, trialkanolamine, etc. In particular, a proper amount of ternary small molecule chain extender is added into a reaction system, so that the crosslinking degree of the polyurethane coating stock solution is properly improved, the mechanical property of a final fabric sample can be improved, but the type and the dosage of the chain extender can not achieve the best beneficial effect through random replacement. In a preferred embodiment of the invention, 1, 4-butanediol is selected as a binary small molecule chain extender, trimethylolpropane is selected as a ternary small molecule chain extender, and the two are used in combination, wherein the mass ratio of the 1, 4-butanediol to the trimethylolpropane is 5-11: 1, a sample with better technical effect can be obtained, and the mass ratio of the 1, 4-butanediol to the trimethylolpropane is more preferably 5:1. therefore, the crosslinking degree of the coating stock solution can be controlled in a proper range, the mechanical property is improved, the hand feeling of the fabric sample can be regulated and controlled, and the softness is kept.
The organic solvent is one or more of acetone, 1, 4-dioxane, N-dimethylformamide, dimethyl sulfoxide, diethyl ether and toluene, preferably acetone.
In the preparation method of the polyurethane coating stock solution, the relative mass parts of the following components are calculated:
the dosage of the vinylidene fluoride is 5-10 parts by mass;
the dosage of the organic solvent is 100 parts by mass;
the dosage of the diisocyanate is 300-450 parts by mass;
the consumption of the polyol is 1000-1500 parts by mass;
the dosage of the chain extender is 20-60 parts by mass;
the dosage of the catalyst is 1 to 3 parts by mass.
The amount of vinylidene fluoride is preferably within the range defined in the present invention, and below the preferred range, the technical effect is less than optimal, and above the preferred range, the technical effect is not significantly improved.
The thermoplastic fiber fabric is obtained by melt spinning and weaving nylon and polyvinylidene fluoride blend; preferably, the mass ratio of the nylon to the polyvinylidene fluoride is 20-25: 1.
the method of blending, spinning and weaving nylon and other polymer materials to obtain the fiber fabric is a common method in the field.
In a preferred embodiment of the present invention, the thermoplastic fiber is prepared by: adding nylon, an antioxidant and polyvinylidene fluoride into a mixer, uniformly mixing, adding the mixture into a double-screw extruder, controlling the temperature of the double-screw extruder to be 170-250 ℃, and extruding and granulating to obtain granules; carrying out melt spinning on the granules, wherein the melt spinning temperature is controlled to be 240-260 ℃ to obtain fibers; and weaving the fibers to obtain the fiber fabric.
The preparation method of the fabric comprises the following steps: and coating the polyurethane film stock solution on the surface of the thermoplastic fiber fabric at room temperature, and curing the polyurethane film stock solution to obtain the fabric.
The method of applying the coating stock to the surface of the fabric layer may be a method commonly used in the art, including but not limited to roll coating, knife coating, brush coating, etc. The curing step after the coating is completed can be a curing step commonly used in the art, wherein the fabric is preferably subjected to reduced pressure curing at 25-45 ℃ to obtain the textile fabric after the curing is completed.
Detailed Description
The invention is further illustrated below in conjunction with specific examples. Unless specifically stated otherwise, the reagents, methods and apparatus employed in the present invention are those conventional in the art.
The raw materials adopted in the embodiment and the comparative example of the invention are as follows:
polytetrahydrofuran ether glycol 1, number average molecular weight 1000;
polytetrahydrofuran ether glycol 2, number average molecular weight 2000;
polyethylene glycol, number average molecular weight 2000;
nylon 6, hunan Yue Hua;
polyvinylidene fluoride, threo, france;
antioxidant 1010, basf.
The preparation method of the polyurethane coating stock used in the examples and the comparative examples comprises the following steps:
step one, introducing vinylidene fluoride into acetone to obtain an acetone solution containing the vinylidene fluoride for standby;
step two, adding polyol and diisocyanate into a reactor under the nitrogen atmosphere, starting stirring, controlling the temperature of the reactor at 85 ℃ and reacting for 3 hours;
and thirdly, controlling the temperature of the reactor at 60 ℃, adding a chain extender, triethylenediamine and the acetone solution containing vinylidene fluoride, reacting for 3 hours, cooling to normal temperature, uniformly stirring, and discharging.
The kinds and amounts of the respective raw materials for preparing the polyurethane coating stock are listed in table 1 in terms of relative parts by mass between the respective components.
TABLE 1 kinds and amounts of raw materials (parts by mass) of polyurethane coating stock solution
The preparation methods for the fiber fabrics of the examples and comparative examples were: nylon 6, antioxidant 1010 and polyvinylidene fluoride are added into a mixer to be mixed uniformly, and then the mixture is added into a double-screw extruder, wherein the temperature control range of the double-screw extruder is as follows: the 1 st to 2 nd sections are 170 ℃, the 3 rd to 6 th sections are 230 ℃, the 7 th to 9 th sections are 220 ℃, the temperature of a machine head is 250 ℃, the rotating speed of a screw rod is 200r/min, and the granules are obtained through extrusion granulation; carrying out melt spinning on the granules, controlling the melt spinning temperature at 260 ℃, controlling the spinning speed at 4500m/min, and obtaining fibers by post-spinning processing speed at 500m/min, heating the box temperature at 170 ℃ and cooling the temperature at 80 ℃; and knitting the fiber on a 36-needle circular weft knitting machine to obtain the fiber fabric.
Wherein, the mass ratio of nylon 6 to polyvinylidene fluoride in the prepared fiber fabric 1 is 20:1, a step of; the mass ratio of nylon 6 to polyvinylidene fluoride in the fiber fabric 2 is 25:1, a step of; the fibrous web 3 is entirely nylon 6 (the raw materials undergo the same blending step).
The preparation method of the samples of the examples and the comparative examples is as follows: and (3) coating the film stock solution on the surface of the fiber fabric in a roller coating mode, and carrying out reduced pressure curing at 40 ℃ to obtain a sample after the film stock solution is cured. The raw material types are shown in Table 2.
Table 2 raw material types of examples and comparative examples samples
The samples obtained in the examples and comparative examples were subjected to performance tests:
1. the mechanical property test standard is GB/T3923.2;
2. the air permeability test standard is GB/T5453;
3. the sample hand feeling test is carried out by a touch method, wherein 'excellent' means soft hand feeling and good touch feeling, 'good' means soft hand feeling and good touch feeling, and 'poor' means hard hand feeling and bad touch feeling.
The test performance results are shown in Table 3.
Table 3 results of the performance test of examples and comparative examples
The raw materials, the amounts, the process steps and the like which are not described in the examples and the comparative examples of the invention are all common in the field, and the non-described matters are consistent in the examples and the comparative examples, so that the examples and the comparative examples are not affected to be transversely compared, and the technical effects of the invention are not affected.

Claims (8)

1. The breathable and soft textile fabric is characterized by being prepared from thermoplastic fiber fabric and polyurethane film coating stock solution;
the preparation method of the polyurethane film stock solution comprises the following steps:
step one, introducing vinylidene fluoride into an organic solvent to obtain an organic solution containing the vinylidene fluoride for later use;
step two, adding polyol and diisocyanate into a reactor under nitrogen atmosphere, starting stirring, controlling the temperature of the reactor to be 60-90 ℃, preferably 70-85 ℃, and reacting for 2-4 hours;
and thirdly, controlling the temperature of the reactor at 40-60 ℃, preferably 50-60 ℃, adding a chain extender, a catalyst and the organic solution containing vinylidene fluoride, reacting for 1-3 hours, cooling to normal temperature, uniformly stirring and discharging.
2. The facestock according to claim 1, wherein the diisocyanate is one or more of diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, 4' -dicyclohexylmethane diisocyanate and hexamethylene diisocyanate, preferably isophorone diisocyanate.
3. The facing material of claim 1, wherein the polyol is one or more of polyethylene glycol, polypropylene glycol, and polytetrahydrofuran ether glycol; polytetrahydrofuran ether glycol is preferred.
4. The fabric of claim 1, wherein the chain extender is a binary small molecule chain extender and/or a ternary small molecule chain extender.
5. The fabric of claim 1, wherein the organic solvent is one or more of acetone, 1, 4-dioxane, N-dimethylformamide, dimethyl sulfoxide, diethyl ether, and toluene, preferably acetone.
6. The fabric according to claim 1, wherein in the preparation method of the polyurethane coating stock solution, the following components are calculated according to relative parts by mass:
the dosage of the vinylidene fluoride is 5-10 parts by mass;
the dosage of the organic solvent is 100 parts by mass;
the dosage of the diisocyanate is 300-450 parts by mass;
the consumption of the polyol is 1000-1500 parts by mass;
the dosage of the chain extender is 20-60 parts by mass;
the dosage of the catalyst is 1 to 3 parts by mass.
7. The fabric according to claim 1, wherein the thermoplastic fiber fabric is obtained by melt spinning and weaving a blend of nylon and polyvinylidene fluoride; preferably, the mass ratio of the nylon to the polyvinylidene fluoride is 20-25: 1.
8. a method for producing the fabric as claimed in any one of claims 1 to 7, comprising the steps of: and coating the polyurethane film stock solution on the surface of the thermoplastic fiber fabric at room temperature, and curing the polyurethane film stock solution to obtain the fabric.
CN202310984562.3A 2023-08-07 2023-08-07 Breathable and soft textile fabric and preparation method thereof Withdrawn CN117005212A (en)

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Application Number Priority Date Filing Date Title
CN202310984562.3A CN117005212A (en) 2023-08-07 2023-08-07 Breathable and soft textile fabric and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310984562.3A CN117005212A (en) 2023-08-07 2023-08-07 Breathable and soft textile fabric and preparation method thereof

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Publication Number Publication Date
CN117005212A true CN117005212A (en) 2023-11-07

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Application publication date: 20231107