Waterproof silica aerogel polyurethane composite insulating wallboard and preparation method thereof
An aerogel polyurethane, composite thermal insulation technology, applied in the directions of thermal insulation, climate change adaptation, insulation improvement, etc., can solve the problem that thermal insulation performance cannot meet the needs of scientific development, thermal insulation material aerogel is easily broken, thermal insulation performance, and thermal insulation effect is easy to disappear. and other problems, to achieve the effect of outstanding fireproof and waterproof performance, good thermal insulation effect, and prevention of breaking.
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[0016] A water-resistant silica aerogel polyurethane composite thermal insulation wallboard, made of the following parts by weight (kg) of raw materials: naphtha 1.5, naphthenic acid 2.5, nano-polytetrafluoroethylene powder 4, succinate monoglyceride 3.5 Porous ceramic ball 100, water glass 100, appropriate amount of Span-80, appropriate amount of Tween-80, appropriate amount of 1mol / L ammonia, appropriate amount of acetone, appropriate amount of ethanol, polyether polyol DSU-365 90, triethanolamine 0.5, water 15, two Dibutyltin laurate 0.75, polymethylene polyphenyl polyisocyanate 100.
[0017] The preparation method of the water-resistant silica aerogel polyurethane composite thermal insulation wallboard includes the following steps:
[0018] (1) According to the volume ratio VSpan-80: VTween-80=1:4 to obtain the mixed liquid, mix the water glass and the mixed liquid at a volume ratio of 1:10 evenly, stir at 400r / min for 30min, and then drip Add 1mol / L ammonia water to adjust th...
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