Processing method of waterproof and moisture permeable polytetrafluoroethylene millipore membrane laminated fabric

A technology of polytetrafluoroethylene and microporous film, applied in the field of laminated fabric manufacturing, can solve the problems of easy delamination, low peel strength, low surface tension of polytetrafluoroethylene, etc., to increase the bonding strength and increase the aesthetic effect Effect

Inactive Publication Date: 2010-11-17
宁波登天氟材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the surface tension of PTFE is low, and it is difficult to combine with other materials, which makes it easy to delaminate between PTFE film and polyurethane during use.
The polytetrafluoroethylene film and polyurethane prepared by the above method are difficult to fuse, the peel strength between them is low, and it is easy to delaminate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Preparation of primer: Dilute the moisture-permeable polyurethane solution (11245 of Nuoyu Chemical Shanghai Co., Ltd.) with butanone to a solid content of 1%, and then add 0.5% of silane coupling agent KH550 (Y-aminopropyl triethyl Oxygen silane), made primer after stirring;

[0022] 2. Preparation of topcoat: Dilute the moisture-permeable polyurethane solution (11245 of Nuoyu Chemical Shanghai Co., Ltd.) to a solid content of 30% with methyl ethyl ketone to prepare a diluted polyurethane topcoat, then add 0.5% titanium dioxide pigment (with the The weight ratio of the diluted polyurethane topcoat), after stirring, topcoat is made;

[0023] 3. Coating polyurethane coating on the polytetrafluoroethylene microporous membrane: apply the primer directly on the polytetrafluoroethylene microporous membrane with a scraper, dry at 80°C for 2 minutes, and then apply the primer The top coating is applied on top of the primer, and dried at 80° C. for 4 minutes to prepare poly...

Embodiment 2

[0027] 1. Preparation of primer: Dilute the moisture-permeable polyurethane solution (11245 of Nuoyu Chemical Shanghai Co., Ltd.) with butanone to a solid content of 5%, and then add 3% of silane coupling agent KH560 (Y-2.3 Trimethoxysilane), made primer after stirring;

[0028] 2. Preparation of topcoat: Dilute the moisture-permeable polyurethane solution (11245 of Nuoyu Chemical Shanghai Co., Ltd.) to a solid content of 10% with butanone to prepare a diluted polyurethane topcoat, then add 2.5% iron oxide red pigment and 2.5 % of iron oxide violet (with the weight ratio of the diluted polyurethane topcoat), after stirring, topcoat is made;

[0029] 3. Coating polyurethane coating on the polytetrafluoroethylene microporous film: apply the primer directly to the polytetrafluoroethylene microporous film with a scraper, dry at 150°C for 1 minute, and then apply the primer The top coat is applied on top of the base coat, and dried at 150°C for 2 minutes to form a polytetrafluoroe...

Embodiment 3

[0033] 1. Preparation of primer: Dilute the moisture-permeable polyurethane solution (11245 of Nuoyu Chemical Shanghai Co., Ltd.) to a solid content of 3% with butanone, and then add 2% of silane coupling agent KH570 (Y-methoxy Propyltrimethoxysilane), made primer after stirring;

[0034] 2. Preparation of topcoat: Dilute the moisture-permeable polyurethane solution (11245 of Nuoyu Chemical Shanghai Co., Ltd.) to a solid content of 20% with butanone to prepare a diluted polyurethane topcoat, then add 1% iron oxide yellow pigment, 1 % of iron oxide green and 1% of iron oxide blue (with the weight ratio of the diluted polyurethane topcoat), stir and make topcoat;

[0035] 3. Coating polyurethane coating on the polytetrafluoroethylene microporous film: apply the primer directly to the polytetrafluoroethylene microporous film with a scraper, dry at 120°C for 1.5 minutes, and then apply the primer The topcoat is applied on top of the primer, and dried at 130°C for 3 minutes to pre...

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Abstract

The invention relates to a processing method of waterproof and moisture permeable polytetrafluoroethylene millipore membrane laminated fabric. The method is as follows: the polytetrafluoroethylene millipore membrane is coated with bottom coating and surface coating in turn to form a composite membrane of polytetrafluoroethylene and polyurethane, and lastly the composite membrane is bonded with a fiber fabric by spot cementing agent. As the solid content of polyurethane in the bottom coating is low, the method is convenient to permeate into the polytetrafluoroethylene millipore membrane; a coupling agent is added, thereby increasing the bonding strength of polyurethane and polytetrafluoroethylene; and an inorganic pigment is added to the surface coating, thereby being capable of giving thecolor of polyurethane, and increasing beautiful effect.

Description

technical field [0001] The invention belongs to the field of laminated fabric manufacturing, and in particular relates to a waterproof and moisture-permeable polytetrafluoroethylene microporous film laminated fabric processing method. Background technique [0002] The biaxially stretched PTFE microporous film waterproof and moisture-permeable laminated fabric is a high-tech product integrating waterproof, moisture-permeable, windproof and chemical-proof functions. The laminated fabric is widely used in outdoor sportswear, leisure Clothing, waterproof and moisture-permeable shoes and other fields. The microstructure of the film is composed of "fibrils-nodes". The thickness of the film is 5-80 microns, the pore size is 0.1-5 microns, there are about 9 billion micropores per square inch, and the opening rate is as high as 80%. Due to the large specific surface area of ​​the PTFE film, it is easy to absorb dust, salt in human sweat, grease, cosmetics and other substances, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/12B32B27/40D06N3/18B32B27/32
Inventor 孙军廖新家
Owner 宁波登天氟材有限公司
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