Ultra-high-flux nano-fiber waterproof gas-permeable membrane and preparation method thereof

A technology of waterproof and breathable membrane and nanofiber membrane, applied in the direction of liquid repellent fiber, fiber type, fiber treatment, etc., can solve the problems of poor waterproof and moisture permeability, complicated preparation process, and resistance to rubbing, etc., and achieve a wide range of applications. Practical application prospects, high moisture permeability, and the effect of improving air permeability

Active Publication Date: 2017-11-07
温明昊
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of waterproof and breathable membranes in the prior art, such as poor waterproof and moisture permeability, complicated preparation process, complex process, and resistance to rubbing, the present invention provides an ultra-high-throughput nanofiber waterproof and breathable membrane and its preparation method

Method used

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  • Ultra-high-flux nano-fiber waterproof gas-permeable membrane and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] An ultra-high-throughput nanofiber waterproof and breathable membrane and a preparation method thereof, comprising:

[0044] Step 1: Prepare 100 g of nano silica toluene dispersion liquid of 0.5% mass concentration, and then prepare 10% of dihydro-3-[3-(trimethoxysilyl) propyl] furan-2,5-dione 5g of toluene solution, 5g of toluene solution of 10% hexadecyltrimethoxysilane were added alternately to the nano-silica toluene dispersion several times. -3-[3-(trimethoxysilyl)propyl]furan-2,5-dione is hydrolyzed to form two carboxyl groups to form a bifunctional group-modified nano-silica toluene dispersion;

[0045] Step 2: Prepare the spinning solution of polyvinyl alcohol, the solvent is water, the mass concentration is 12%, and electrospinning is carried out, the spinning distance is 15cm, the spinning voltage is 35kv, after the polyvinyl alcohol nanofiber membrane is obtained, pass 1% After the γ-aminopropyltriethoxysilane ethanol solution is processed, the polyvinyl alc...

Embodiment 2

[0049] An ultra-high-throughput nanofiber waterproof and breathable membrane and a preparation method thereof, comprising:

[0050] Step 1: prepare 100 g of nano-silica ethanol dispersion liquid of 0.5% mass concentration, then prepare 5 g of ethanol solution of 10% gamma-aminopropyltriethoxysilane, 10% tridecafluorooctyltrimethoxysilane 5g of the ethanol solution was added alternately to the ethanol dispersion of nano-silica in multiple times to form the ethanol dispersion of nano-silica modified by bifunctional groups;

[0051] Step 2: Prepare the spinning solution of chitosan with 90% deacetylation, the solvent is glacial acetic acid, the mass concentration is 9%, and electrospinning is carried out, the spinning distance is 18cm, and the spinning voltage is 70kv to obtain porous chitosan nano Fiber membrane;

[0052] Step 3: spray the nano-silica ethanol dispersion liquid modified by the bifunctional group prepared in step 1 on the surface of the chitosan nanofiber membran...

Embodiment 3

[0055] An ultra-high-throughput nanofiber waterproof and breathable membrane and a preparation method thereof, comprising:

[0056] Step 1: Prepare 100 g of nano silicon dioxide ethanol dispersion liquid of 0.5% mass concentration, then prepare 5 g of ethanol solution of 10% gamma-aminopropyltriethoxysilane, 10% ethanol of vinyltriethoxysilane 5g of the solution was alternately added to the ethanol dispersion of nano-silica in multiple times to form a bifunctional group-modified ethanol dispersion of nano-silica;

[0057] Step 2: Prepare a spinning solution of polyacrylonitrile, the solvent is N,N-dimethylformamide, the mass concentration is 12%, and electrospinning is carried out, the spinning distance is 16cm, and the spinning voltage is 60kv to obtain polyacrylonitrile The nanofibrous membrane is treated with 10% sodium hydroxide solution, cleaned and then treated with 15% hydrochloric acid, and dried to obtain a carboxyl-modified polyacrylonitrile nanofiber membrane with a...

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Abstract

The present invention relates to an ultra-high-flux nano-fiber waterproof gas-permeable membrane and a preparation method thereof, and belongs to the field of textile technology material synthesis. The ultra-high-flux nano-fiber waterproof gas-permeable membrane is prepared from the following two components such as bifunctional group-modified nano-silica particles and a polymer nano-fiber membrane, wherein the nano-fiber membrane uses the bifunctional group-modified nano-silica particles as the adhesive between fibers, such that the rub resistance of the membrane material can be enhanced, the nano-fiber surface roughness can be increased, and the water resistance of the fiber membrane can be increased. According to the present invention, the prepared ultra-high-flux nano-fiber waterproof gas-permeable membrane has characteristics of small pore size, high porosity and enhanced adhesion structure, can provide advantages of high water resistance, high moisture permeable flux and high strength in the waterproof and moisture permeation field, has the moisture permeation flux of more than or equal to 18000 g/m<2>/d, has the water resistance of more than or equal to 100 kPa, and has wide practical application prospects.

Description

technical field [0001] The invention relates to a waterproof and breathable membrane, in particular to an ultra-high flux nanofiber waterproof and breathable membrane and a preparation method thereof. Background technique [0002] Waterproof & Moisture Permeable Fabric (Waterproof & Moisture Permeable Fabric) is usually also called waterproof and breathable fabric, and it is generally called breathable fabric (Waterproof but Breathable Fabric) in foreign countries. It is a fabric that can prevent rain, perspire and breathe. It appears when human beings constantly improve self-protection against the encroachment of nature. During the wearing process, water cannot penetrate the fabric under a certain pressure, but the sweat emitted by the human body can be transmitted to the outside world through the fabric in the form of water vapor, without condensation and accumulation between the human body surface and the fabric, keeping the wearer dry and warm. Therefore, it is called "...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D01D1/02D04H1/728D06M101/24D06M101/02D06M101/28D06M101/38D06M101/20
CPCD01D1/02D04H1/728D06M11/79D06M2101/02D06M2101/20D06M2101/24D06M2101/28D06M2101/38D06M2200/12
Inventor 门秀巾肖宇
Owner 温明昊
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