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Preparation method of fiber-based waterproof moisture-permeable film with intelligent unidirectional moisture conductivity

A waterproof and moisture-permeable film, one-way moisture-conducting technology, applied in chemical instruments and methods, lamination, application, etc., can solve problems such as stickiness, lack of one-way moisture-conducting characteristics, etc., and achieve excellent waterproof performance

Active Publication Date: 2016-09-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the patented technology of electrospinning method in the field of waterproof and moisture-permeable material processing includes: a high-efficiency waterproof and moisture-permeable fabric and its preparation method (CN102632648A), a high moisture-permeable flux fiber-based waterproof and moisture-permeable membrane by electrospinning method and its device (CN104452109A), a waterproof and moisture-permeable composite membrane and its preparation method (CN103963393A), a preparation method of air-permeable and impermeable polyurethane nanofiber membrane (CN102517794A), etc., the main purpose of which is to improve the waterproof and moisture-permeable membrane Waterproof and moisture permeability, the prepared membrane material does not have unidirectional moisture-wicking properties, and moisture easily enters the interior of the clothing in a high-humidity environment, and the sweat from the human body is difficult to evaporate, making people feel sticky, stuffy and other discomforts

Method used

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  • Preparation method of fiber-based waterproof moisture-permeable film with intelligent unidirectional moisture conductivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a fiber-based waterproof and moisture-permeable membrane with intelligent unidirectional moisture-wicking function is composed of a hygroscopic expansion fiber layer 1, an adhesive 2 and a hydrophobic fiber layer 3, and its preparation method is as follows:

[0035] The first step: Sodium polyacrylate (relative molecular mass is 4000) is dissolved in water to prepare a sodium polyacrylate solution with a mass fraction of 20%, and N, N-methylenebisacrylamide is added as a crosslinking agent, N, N - Methylenebisacrylamide accounted for 3% of the mass fraction of sodium polyacrylate, and stirred evenly to obtain a spinning solution; prepared a hydrophilic fiber layer on a copper grid by electrospinning, the spinning voltage was 30kV, and the receiving distance was 20cm , the liquid supply rate of the spinning solution is 5mL / h, and the thickness of the obtained hydrophilic fiber layer is 15 μm;

[0036]Step 2: Spray the phenolic resin adhesive e...

Embodiment 2

[0040] Such as figure 1 As shown, a fiber-based waterproof and moisture-permeable membrane with intelligent unidirectional moisture-wicking function is composed of a hygroscopic expansion fiber layer 1, an adhesive 2 and a hydrophobic fiber layer 3, and its preparation method is as follows:

[0041] The first step: Sodium polyacrylate (relative molecular mass is 4000) is dissolved in water to prepare a sodium polyacrylate solution with a mass fraction of 5%, and N, N-methylenebisacrylamide is added as a crosslinking agent, N, N -Methylenebisacrylamide accounts for 1% of the mass fraction of sodium polyacrylate, and stirs it evenly to obtain a spinning solution; prepares a hydrophilic fiber layer on a copper grid by electrospinning, the spinning voltage is 30kV, and the receiving distance is 20cm , the liquid supply rate of the spinning solution is 5mL / h, and the thickness of the obtained hydrophilic fiber layer is 15 μm;

[0042] Step 2: Spray the phenolic resin adhesive emul...

Embodiment 3

[0046] Such as figure 1 As shown, a fiber-based waterproof and moisture-permeable membrane with intelligent unidirectional moisture-wicking function is composed of a hygroscopic expansion fiber layer 1, an adhesive 2 and a hydrophobic fiber layer 3, and its preparation method is as follows:

[0047] The first step: dissolving sodium polyacrylate (the relative molecular mass is 4000) in water to prepare a sodium polyacrylate solution with a mass fraction of 30%, and adding N, N-methylenebisacrylamide as a crosslinking agent, N, N- Methylenebisacrylamide accounted for 5% of the mass fraction of sodium polyacrylate, and stirred evenly to obtain a spinning solution; prepared a hydrophilic fiber layer on a copper grid by electrospinning, the spinning voltage was 30kV, and the receiving distance was 20cm. The liquid supply rate of the spinning solution is 10mL / h, and the thickness of the obtained hydrophilic fiber layer is 15 μm;

[0048] The second step: Spray the phenolic resin a...

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Abstract

The invention provides a preparation method of a fiber-based waterproof moisture-permeable film with intelligent unidirectional moisture conductivity. The preparation method comprises dissolving a hydrophilic polymer in a solvent A, adding a cross-linking agent into the solution to obtain a spinning solution, preparing a hydrophilic fibrous layer on a reception base through an electrostatic spinning method, spraying glue to the hydrophilic fibrous layer through an electrostatic spraying method to obtain a glue layer, dissolving a hydrophobic polymer in a solvent B to obtain a spinning solution, forming a hydrophobic fibrous layer on the glue layer through the electrostatic spinning method to obtain a fiber film, and carrying out heat treatment on the fiber film so that the polymer in the hydrophilic fibrous layer undergoes a chemical crosslinking reaction to produce a moisture absorption expansion fibrous layer and thus the fiber-based waterproof moisture-permeable film with intelligent unidirectional moisture conductivity is obtained. The fiber-based waterproof moisture-permeable film has intelligent unidirectional moisture conductivity of low moisture opening steam discharge and high moisture closed sweat guide and guarantees human body dryness and comfort in various environments.

Description

technical field [0001] The invention belongs to the technical field of electrospinning functional materials, and relates to a preparation method of a fiber-based waterproof and moisture-permeable membrane with an intelligent unidirectional moisture-guiding function, in particular to a low-humidity perforated membrane based on a hydrophilic fiber layer with hygroscopic expansion characteristics. The processing technology of intelligent one-way moisture-conducting waterproof and moisture-permeable film for steam and high-humidity closed-cell sweat-conducting. Background technique [0002] The waterproof and moisture-permeable membrane material is the core material of waterproof and moisture-permeable functional clothing. Balance regulation; the material is required to have a smaller pore size (smaller than the size of water droplets, larger than the size of water molecules) and higher porosity (to ensure higher moisture permeability). Electrospinning technology is an effectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/08B32B27/30B32B27/34B32B7/12B32B5/08B32B27/18B32B37/06B32B37/12B32B37/15
CPCB32B5/08B32B5/26B32B7/12B32B27/18B32B37/06B32B37/12B32B37/15B32B2262/0223B32B2262/0238B32B2262/0246B32B2262/0261B32B2262/0276B32B2262/14B32B2307/728B32B2307/73B32B2437/00
Inventor 丁彬余西李洋生俊露张敏王先锋印霞俞建勇
Owner DONGHUA UNIV
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