Degradable thin film with waterproof and moisture permeable function

A degradable film, waterproof and moisture-permeable technology, which is applied in the field of textile fabrics, can solve the problems of easy hydrolysis, imperviousness to water washing, difficulty in anti-dermis, and resistance to acid and alkali erosion, etc., to achieve excellent resistance to ultraviolet radiation, improve moisture permeability, The effect of excellent windability

Inactive Publication Date: 2012-10-31
KUNSHAN HUAYANG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nature of the raw material of thermoplastic polyurethane film TPU determines its poor wear resistance, but its temperature resistance is lower than 130°C, it is not resistant to acid and alkali erosion, and it is difficult to achieve the effect of anti-leather when it feels hard. Severe limitations, the highest is no more than 7000mmH 2 O, easy to hydrolyze and not washable

Method used

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  • Degradable thin film with waterproof and moisture permeable function
  • Degradable thin film with waterproof and moisture permeable function
  • Degradable thin film with waterproof and moisture permeable function

Examples

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Embodiment

[0021] Embodiment: A degradable film with waterproof and moisture-permeable function, the degradable film is obtained by drying the slurry emulsion, and the slurry emulsion is composed of the following components by weight:

[0022]

[0023]

[0024] The slurry emulsion forms the degradable film through the following processes, including:

[0025] Step 1, the slurry emulsion is coated on the surface of silicone oil release paper by a scraper,

[0026] Step 2: Carry out the first-stage drying under the condition of 80-100°C and low-speed air flow,

[0027] Step 3: Carry out the second-stage drying under the condition of 110-130°C and low-speed air flow,

[0028] Step 4: Carry out the third-stage drying under the condition of 150-180°C and low-speed air flow,

[0029] Step 5, peeling off the silicone oil release paper after cooling to obtain the degradable film.

[0030] The gap of the scraper is 0.005-0.03mm.

[0031] The cooling temperature in the above step five is ...

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PUM

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Abstract

The invention discloses a degradable thin film with a waterproof and moisture permeable function. The degradable thin film is obtained by drying a slurry emulsion, and the slurry emulsion is formed by the following components by weight parts: 70 parts of polyester type polyurethane, 30 parts of polyether polyurethane, 40-50 parts of toluene, 20-30 parts of acetone, 20-30 parts of dimethylformamide, 8-12 parts of diphenylmethane-4,4'-diisocyanate, 1-3 parts of triethanolamine, 1-3 parts of tetra-[beta-(3,5-ditertiary butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester and 0.2-0.5 part of acrylate polymer; the slurry emulsion is processed by using the following process to form the degradable thin film; and the process comprises the following steps of: coating the slurry emulsion on the surface of silicone oil release paper; and sequentially drying under a low-speed flowing air atmosphere under the conditions of 80-100 DEG C, 110-130 DEG C and 150-180 DEG C to obtain the degradable thin film. The degradable thin film disclosed by the invention guarantees the flexibility and the malleability, and also accelerates the forming of the thin film to improve the moisture permeable performance of the thin film.

Description

technical field [0001] The invention relates to a degradable film with waterproof and moisture-permeable functions, belonging to the technical field of textile fabrics. Background technique [0002] At present, most of the waterproof and moisture-permeable membranes used for clothing composite materials are thermoplastic polyurethane TPU (hereinafter referred to as TPU). Thermoplastic polyurethane film TPU is formed by blow molding, casting and extrusion of thermoplastic polyurethane resin. The nature of the raw material of thermoplastic polyurethane film TPU determines its poor wear resistance, but its temperature resistance is lower than 130°C, it is not resistant to acid and alkali erosion, and it is difficult to achieve the effect of anti-leather when it feels hard. Severe limitations, the highest is no more than 7000mmH 2 O, easy to hydrolyze and not washable. Contents of the invention [0003] The object of the present invention is to provide a degradable film wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/08C08L33/04C08K5/134C08K5/29C08J5/18
Inventor 张子睿
Owner KUNSHAN HUAYANG NEW MATERIAL
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