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Preparing method of environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane

A waterproof and moisture-permeable membrane, environmentally friendly solvent technology, used in fiber types, filament/thread forming, textiles and papermaking, etc., can solve problems such as damage to human health, environmental pollution, etc., to enhance water resistance, excellent water pressure resistance, guarantee Effects of stability and durability

Active Publication Date: 2018-01-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the existing electrospun waterproof and moisture-permeable membranes cause environmental pollution during the preparation process and damage human health during the application process, and provide a preparation method of an environmentally friendly solvent-type electrospun waterproof and moisture-permeable membrane. Green production brings safer protection to the wearer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing an environmentally friendly solvent-based electrospun waterproof and moisture-permeable membrane, the steps are as follows:

[0031] 1) take water as solvent preparation mass fraction and be 15% polyvinyl alcohol (Shanghai Kuraray Company, M W =145000) solution, and add 3% aziridine cross-linking agent (Guangzhou Wanjun Chemical Technology Co., Ltd., M W =40000) and 5% fluorine-containing acrylic acid (Zhenzhou Chemical Group, M W =80000) emulsion, stir evenly to obtain spinning solution; prepare hydrophobic fiber film on copper net by electrospinning method, spinning voltage is 30kV, receiving distance is 20cm, the liquid supply speed of spinning solution is 5mL / h, the obtained hydrophobic fiber film The thickness of the fiber membrane is 15 μm;

[0032] 2) After heat treatment and cross-linking of the hydrophobic fiber membrane: in an open oven, treat the fiber membrane at 120°C for 30 minutes, and place it at room temperature for 10 minutes t...

Embodiment 2

[0034] A method for preparing an environmentally friendly solvent-based electrospun waterproof and moisture-permeable membrane, the steps are as follows:

[0035] 1) Using water as a solvent to prepare polyethyleneimine with a mass fraction of 20% (Nanjing Bangnuo Biotechnology Co., Ltd., M W =70000) solution, and add 5% aziridine cross-linking agent (Guangzhou Wanjun Chemical Technology Co., Ltd., M W =40000) and 5% polysilazane resin (Laiyang Zhongxing Organic Silicon Technology Co., Ltd., M W =100000), stir evenly to obtain spinning solution; prepare hydrophobic fiber film on copper net by electrospinning method, spinning voltage is 30kV, receiving distance is 20cm, and the liquid supply speed of spinning solution is 5mL / h, gained hydrophobic fiber The thickness of the film is 15 μm;

[0036] 2) After cross-linking the hydrophobic fiber membrane with ultraviolet radiation: use an ultraviolet light source with a wavelength of 300nm and a power density of 2000mW / cm for 30s,...

Embodiment 3

[0038] A method for preparing an environmentally friendly solvent-based electrospun waterproof and moisture-permeable membrane, the steps are as follows:

[0039] 1) Using water as a solvent to prepare polyethylene oxide with a mass fraction of 10% (Shanghai Youdao Aoba Chemical Co., Ltd., M W =100000) solution, and add 3% aziridine cross-linking agent (Guangzhou Wanjun Chemical Technology Co., Ltd., M W =40000) and 7% polysilazane resin (Laiyang Zhongxing Organic Silicon Technology Co., Ltd., M W =100000), stir evenly to obtain spinning solution; prepare hydrophobic fiber membrane on non-woven fabric by electrospinning method, the spinning voltage is 20kV, the receiving distance is 10cm, and the liquid supply speed of spinning solution is 5mL / h, the obtained The thickness of the hydrophobic fiber membrane is 15 μm;

[0040] 2) Post-treatment of the hydrophobic fiber membrane by UV radiation cross-linking: use a UV light source with a wavelength of 400nm and a power density ...

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Abstract

The invention provides a preparing method of an environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane. The preparing method is characterized by comprisingthe steps of 1, preparing a high-molecular polymer solution with water or environment-friendly alcohols being solvents, adding a corresponding water-soluble or alcohol-soluble water repelling agent and cross-linking agent, and preparing a hydrophobic fiber membrane through an electrostatic spinning technology; 2, conducting aftertreatment on the fiber membrane to trigger a chemical crosslinking reaction between a polymer matrix and the cross-linking agent, reinforcing the water resistance of the fiber membrane and regulating the pore structure of the fiber membrane to obtain the environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane. In the production process, no waste gas, waste water and solid waste are generated, the environment cannot be damaged, the prepared waterproof and moisture-permeable membrane does not contain toxic solvents, and in the actual application, the healthy of a wearer cannot be damaged; the resistance to water pressure of the fiber-based waterproof and moisture-permeable membrane is larger than or equal to 150 kPa, the moisture permeability is larger than or equal to 15,000 g / m<2> / d, the tensile breaking strengthis larger than or equal to 30 MPa, and the environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane has a large application prospect in the field of functional protective clothes.

Description

technical field [0001] The invention belongs to the field of electrostatic spinning functional materials, and relates to a preparation method of an environmentally friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane. Background technique [0002] The waterproof and moisture-permeable membrane is mainly used in the field of protective clothing. It can not only prevent the penetration of rainwater, but also conduct the sweat emitted by the human body to the outside world in the form of water vapor, thereby preventing sweat from accumulating and condensing between the body surface and clothing, ensuring Improve the protection and wearing comfort of clothing. Electrospinning technology is an effective method to prepare small-pore size, high-porosity structural fiber membranes, and has been applied to prepare high-performance waterproof and moisture-permeable fiber membranes. At present, the patented technology of electrospinning method in the...

Claims

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Application Information

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IPC IPC(8): D04H1/728D01D5/00D06M10/00D06C7/00D06M101/24D06M101/30D06M101/18D06M101/26
Inventor 丁彬余西生俊露赵景周文王先锋印霞俞建勇
Owner DONGHUA UNIV
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