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Waterproof moisture penetration film preparation method

A waterproof and moisture-permeable film, technology of preparation steps, applied in the direction of chemical instruments and methods, adhesive types, polyurea/polyurethane adhesives, etc., can solve problems such as unfavorable folding, uncomfortable wearing, poor toughness, etc., and achieve improved The effect of hygroscopicity

Inactive Publication Date: 2019-05-31
姜向军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main technical problem to be solved by the present invention is that the waterproof and moisture-permeable membrane has poor moisture absorption and air permeability, and the support carriers used in the moisture-permeable membrane are mostly fluorine-containing waterproof resins, which have poor toughness. , which is uncomfortable to wear and not conducive to folding, a method for preparing a waterproof and moisture-permeable membrane is provided

Method used

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Examples

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preparation example Construction

[0032] The preparation method of the moisture-absorbing toughening agent is: after blowing nitrogen into the three-necked flask to discharge the air, add 20mL of 1,4-butanediol, 40mL of boron trifluoride ether and 30mL of tetrahydrofuran, and place it in an ice-water bath to obtain the initial mixed solution. Use a constant pressure dropping funnel to add 30 mL of epichlorohydrin dropwise to the three-necked flask at a dropping rate of 5 mL / min, keep the ice-water bath for 4 hours, then add 4 mL of distilled water to the three-necked flask, and let it stand for 5 minutes to obtain the reaction product; Pour the above reaction product into a separatory funnel, wash it twice with distilled water and 30% sodium carbonate solution in turn, place it in a distillation flask after washing, heat up to 90°C, and distill for 3 hours to obtain a copolyether. In terms of parts by weight, 50 parts of copolyether, 20 parts of dimethyl sulfoxide, 5 parts of sodium azide, and 2 parts of sodium...

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Abstract

The invention discloses a waterproof moisture penetration film preparation method, and belongs to the technical field of high-polymer waterproof materials. The prepared waterproof moisture penetrationfilm comprises gelatinous fiber solution, moisture absorption toughening agents, hot melt adhesives and polytetrafluoroethylene micro-pore films, deeper stripes are vertically distributed on the inner fibrous layers of mulberry barks, the inner fibrous layers are of structures of hollow cavities, have more micro-pores and soaked in moisture absorption coagulating bath, moisture absorption performance of the gelatinous fiber solution is improved, tetrahydrofuran segments are introduced into glycidyl azide polymer to prepare the moisture absorption toughening agents, the toughness and the moisture absorption performance of a moisture penetration film at normal temperature are improved under synergistic effects of the moisture absorption toughening agents and the gelatinous fiber solution, and the moisture penetration performance and the toughness of the whole waterproof moisture penetration film are improved. The prepared waterproof moisture penetration film resists outside water through the polytetrafluoroethylene micro-pore films with low surface energy, the inner layer of the waterproof moisture penetration film is made of moisture absorption toughness materials and can absorb moisture approaching to the inside of skins, and the film has wide application prospects.

Description

technical field [0001] The invention discloses a preparation method of a waterproof and moisture-permeable membrane, which belongs to the technical field of polymer waterproof materials. Background technique [0002] Waterproof and moisture permeable membrane is a new type of polymer waterproof material. It uses polyurethane (TPU) as the main material and introduces hydrophilic groups. The surface of the film has no pores, so it can resist wind and water. Because the film has a hydrophilic group, it conducts through moisture absorption, so it has the function of moisture permeability. Application of waterproof and moisture-permeable membrane: racing suits, motorcycle suits, golf suits, waterproof suits, hiking shoes, shower curtains, tablecloths, raincoats, baby bibs, nautical suits, fishing pants, snow jackets, windbreakers, cold jackets, ski suits, Ski gloves, mountaineering clothing, hunting clothing, surfing clothing, horse clothing, assault clothing, combat clothing,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J197/02C09J175/04C09J177/00C09J11/08B32B37/12B32B37/10
Inventor 姜向军何俊欣陈莉莉
Owner 姜向军
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