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Waterproof breathable film with thermal insulation performance and preparation method thereof

A waterproof breathable membrane and thermal insulation technology, applied in the field of breathable membrane, can solve the problem of lack of adaptive breathing ability, thermal insulation, self-cleaning multi-functional characteristics, etc., and achieve good waterproof performance and adaptive breathability, strong hydrostatic pressure, The effect of excellent comprehensive mechanical strength

Inactive Publication Date: 2021-07-09
重庆中膜科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these membranes have appropriate water vapor transmission (WVT) capabilities, they do not have multifunctional properties such as adaptive breathing capabilities, thermal insulation, and self-cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 Add 0.012 mol of polyethylene glycol, 0.002 mol of polypropylene glycol and 0.020 mol of 4,4'-diphenylmethane diisocyanate into a reaction vessel containing 200 mL of dimethylacetamide, heat at 80°C, 500r / Min stirred for 2h.

[0019] Add 0.006mol of 2,2-dimethylolpropionic acid into the above reaction vessel, and continue heating and stirring for 1h. Then add 0.002 mol of ethylenediamine, heat and stir at 50° C. for 2 h, and obtain the polymer solution for later use.

[0020] Add 0.01 mol of silica airgel to the polymer solution obtained in the above experiment and stir evenly. Finally, the prepared slurry was scraped onto a polytetrafluoroethylene board, heated and dried at 80° C., and the flow rate of the slurry was controlled to be 1 L / h and the speed of the substrate to be 1 m / min.

Embodiment 2

[0021] Example 2 Add 0.015mol of polyethylene glycol and 0.020mol of 2,4-toluene diisocyanate into a reaction vessel containing 200mL of dimethylacetamide, heat at 80°C, and stir at 500r / min for 2h.

[0022] Add 0.006mol of 2,2-dimethylolpropionic acid into the above reaction vessel, and continue heating and stirring for 1h. Then add 0.003mol of ethylenetriamine, heat and stir at 50°C for 2h, and obtain the polymer solution for later use.

[0023] Add 0.01 mol of silica airgel to the polymer solution obtained in the above experiment and stir evenly. Finally, the prepared slurry was scraped onto a glass plate, heated and dried at 80° C., and the flow rate of the slurry was controlled to be 1 L / h and the substrate speed to be 1 m / min.

Embodiment 3

[0024] Example 3 Add 0.015mol of polyethylene glycol and 0.020mol of hexamethylene diisocyanate into a reaction vessel containing 200mL of dimethylacetamide, heat at 80°C, and stir at 500r / min for 2h.

[0025] Add 0.006mol of 2,2-dimethylolpropionic acid into the above reaction vessel, and continue heating and stirring for 1h. Then add 0.003mol of ethylenediamine, heat and stir at 50°C for 2h, and obtain the polymer solution for later use.

[0026] Add 0.01 mol of titanium dioxide airgel to the polymer solution obtained in the above experiment and stir evenly. Finally, the prepared slurry was scraped onto a glass plate, heated and dried at 80° C., and the flow rate of the slurry was controlled to be 1 L / h and the substrate speed to be 1 m / min.

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PUM

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Abstract

The invention discloses a waterproof breathable film with heat preservation performance and a preparation method of the waterproof breathable film. The composite film has good waterproof performance and self-adaptive breathability under different humidity and temperature and has heat preservation performance. In addition, the composite film also has relatively high hydrostatic pressure and excellent comprehensive mechanical strength. The composite film has a great application prospect in the fields of intelligent wearing and the like.

Description

technical field [0001] The invention relates to the technical field of breathable membranes, in particular to a waterproof breathable membrane with thermal insulation performance and a preparation method thereof. Background technique [0002] Since the cold winter is often accompanied by rain and snow, waterproof and breathable performance of winter clothing is essential. Traditional waterproof and breathable membranes are divided into two categories: porous and non-porous, which are respectively composed of polytetrafluoroethylene (e-PTFE) and polyurethane. Although these membranes have appropriate water vapor transmission (WVT) capabilities, they do not have multifunctional properties such as adaptive breathing ability, thermal insulation, and self-cleaning. In contrast, smart breathable membranes can keep the human body warm in cold weather and also keep the human skin dry and comfortable under different conditions. Therefore, the development of smart breathable membran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L75/08C08K7/26C08K7/24C08G18/76C08G18/73C08G18/66C08G18/48C08G18/12C08G18/10C08G18/34C08G18/32
CPCC08J5/18C08G18/4825C08G18/4833C08G18/4808C08G18/7614C08G18/7671C08G18/73C08G18/10C08G18/12C08J2375/08C08K7/26C08K7/24C08G18/348C08G18/3228
Inventor 周贤敏邓忠文
Owner 重庆中膜科技集团有限公司
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