Waterproof and moisture permeable membrane, preparation method of waterproof and moisture permeable membrane, waterproof and moisture permeable fabric and preparation method of waterproof and moisture permeable fabric

A waterproof and moisture-permeable film and fabric technology, which is applied to the waterproof and moisture-permeable film, its preparation, and the field of waterproof and moisture-permeable fabrics, can solve the problems of reducing the comfort level of clothing and waterproof articles, etc.

Inactive Publication Date: 2014-12-17
ZHEJIANG WEIXING IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The moisture permeability of this waterproof laminated fabric is slightly improved, but the moisture permeability can only reach 2000g/m at most 2 ·24 hours
After this w

Method used

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  • Waterproof and moisture permeable membrane, preparation method of waterproof and moisture permeable membrane, waterproof and moisture permeable fabric and preparation method of waterproof and moisture permeable fabric
  • Waterproof and moisture permeable membrane, preparation method of waterproof and moisture permeable membrane, waterproof and moisture permeable fabric and preparation method of waterproof and moisture permeable fabric
  • Waterproof and moisture permeable membrane, preparation method of waterproof and moisture permeable membrane, waterproof and moisture permeable fabric and preparation method of waterproof and moisture permeable fabric

Examples

Experimental program
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preparation example Construction

[0049] The present invention also provides a method for preparing a waterproof and moisture-permeable membrane, comprising the following steps:

[0050] Dissolving the hydrophobic polymer in the first solvent to obtain a hydrophobic spinning solution;

[0051] Dissolving the hydrophilic polymer in the second solvent to obtain a hydrophilic spinning solution;

[0052] Carrying out the first electrospinning of the hydrophobic spinning solution to obtain a nanofiber hydrophobic layer;

[0053] Carrying out the second electrospinning of the hydrophilic spinning solution to obtain a nanofiber hydrophilic layer;

[0054] The nanofiber hydrophilic layer and the nanofiber hydrophobic layer are hot-compressed to obtain a waterproof and moisture-permeable membrane.

[0055] In the invention, the hydrophobic polymer is dissolved in the first solvent to obtain the hydrophobic spinning solution. In the present invention, the hydrophobic polymer is preferably first dried to obtain a drie...

Embodiment 1

[0090] Dry polyethylene terephthalate (PET) particles and polyamide-66 (PA-66) particles in a vacuum oven at 110°C for 12 hours, and polyvinylidene fluoride-perfluoropropylene (PVDF-HFP) powder 1. Thermoplastic polyurethane (TPU) particle powder was dried in a vacuum oven at 100° C. for 12 hours, cooled to room temperature and placed in a desiccator for use.

[0091] Weigh 200g of dry PET particles and dissolve in 1400g of trifluoroacetic acid and dichloromethane mixed solvent, stir at room temperature for 12h to obtain a transparent PET organic spinning solution; weigh 150g of dry PVDF-HFP powder and dissolve in 850g of DMF In the mixed solvent of acetone, stir 12h at room temperature, obtain transparent PVDF-HFP organic spinning solution;

[0092] Weigh 150g of dry PA-66 particles and dissolve them in a mixed solvent of 850g of formic acid and chloroform, stir at room temperature for 12h to obtain a transparent PA-66 organic spinning solution; weigh 120g of dry TPU particles...

Embodiment 2

[0103] Dry polyvinylidene fluoride (PVDF) powder and polyamide-6 (PA-6) particles in a vacuum oven at 110°C for 12 hours, and dry polyvinylidene fluoride-perfluoropropylene copolymer (PVDF-HFP) powder, thermoplastic polyurethane (TPU) particle powder was dried in a vacuum oven at 100°C for 12 hours, cooled to room temperature and placed in a desiccator.

[0104] Weigh 200g dry PVDF powder and dissolve it in a mixed solvent of 1800g DMF and acetone, stir at room temperature for 12h to obtain a transparent PVDF organic spinning solution; weigh 200g dry PVDF-HFP powder and dissolve it in a mixed solvent of 1400g DMF and acetone solvent, stirred at room temperature for 12h to obtain a transparent PVDF-HFP organic spinning solution;

[0105] Weigh 150g of dry PA-6 particles and dissolve them in a mixed solvent of 850g of formic acid and chloroform, stir at room temperature for 12h to obtain a transparent PA-66 organic spinning solution; weigh 120g of dry TPU particles and dissolve th...

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Abstract

The invention provides a waterproof and moisture permeable membrane which sequentially comprises a nano-fiber hydrophilic layer and a nano-fiber hydrophobic layer. The nano-fiber hydrophilic layer is prepared from a hydrophilic polymer by electrostatic spinning; the nano-fiber hydrophobic layer is prepared from a hydrophobic polymer by electrostatic spinning. The waterproof and moisture permeable membrane provided by the invention has good moisture permeability and air permeability; an experiment result shows that the moisture permeability of the waterproof and moisture permeable membrane provided by the invention can reach 10,000g/m<2>24h, and the air permeability of the waterproof and moisture permeable membrane can reach 0.29mL/cm<2>s. The invention also provides a preparation method of the waterproof and moisture permeable membrane. According to the preparation method provided by the invention, the nano-fiber hydrophilic layer and the nano-fiber hydrophobic layer which are prepared by electrostatic spinning are subjected to hot-pressing compounding, so that the obtained waterproof and moisture permeable membrane has better performance and can be integrally formed without being adhered by an adhesive; the production process is simplified; the waterproof and moisture permeable membrane is easy for industrial production. The invention also provides a waterproof and moisture permeable fabric and a preparation method thereof.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a waterproof and moisture-permeable membrane, a preparation method thereof, a waterproof and moisture-permeable fabric, and a preparation method thereof. Background technique [0002] Waterproof and moisture-permeable fabric, also known as "breathable fabric", is a product that has been researched and developed by the textile industry for many years. The products made of waterproof and moisture-permeable fabric have the properties of waterproof, moisture permeability, windproof, breathable and warm. It can resist rain, snow and cold wind, and can export the moisture emitted by the human body in time to keep the body dry and warm. Waterproof and moisture-permeable fabrics have experienced a development stage where waterproof and moisture-permeable fabrics cannot be considered at the same time. With the rapid development of industry, people have higher requirements for...

Claims

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Application Information

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IPC IPC(8): A41D31/02B32B27/12D04H1/728
Inventor 陈国贵宋学礼刘艳新
Owner ZHEJIANG WEIXING IND DEV
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