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
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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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