Preparation method of high-performance heat-insulating composite plate
A thermal insulation composite board, high-performance technology, applied in the field of building materials, to achieve the effect of improving mechanical properties and thermal insulation properties, high porosity, and enhanced structural strength
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Embodiment 1
[0024] A method for preparing a high-performance thermal insulation composite board, comprising the following steps:
[0025] (1) Soak the cotton raw material in concentrated sulfuric acid solution, let it stand for 20 minutes, and then stir it in a water bath at 40°C for 2 hours to obtain a cellulose solution; wash the prepared cellulose solution with deionized water and centrifuge until The solution is neutral, and the deionized water is removed to obtain a cellulose sol; wherein, the ratio of the cotton raw material to the concentrated sulfuric acid solution is 1g: 15mL;
[0026] (2) Mix and stir methyltrimethoxysilane, dimethyldimethoxysilane, cetyltrimethylammonium bromide, N,N-dimethylamide, acetic acid solution and ethanol evenly, then set Stir and mix in a water bath at 25°C for 60 minutes to obtain a base liquid; among them, methyltrimethoxysilane, dimethyldimethoxysilane, hexadecyltrimethylammonium bromide, N,N-dimethyl The dosage ratio of amide, acetic acid and eth...
Embodiment 2
[0031] A method for preparing a high-performance thermal insulation composite board, comprising the following steps:
[0032] (1) Soak the cotton raw material in concentrated sulfuric acid solution, let it stand for 20 minutes, and then stir it in a water bath at 40°C for 2 hours to obtain a cellulose solution; wash the prepared cellulose solution with deionized water and centrifuge until The solution is neutral, and the deionized water is removed to obtain a cellulose sol; wherein, the ratio of the cotton raw material to the concentrated sulfuric acid solution is 1g: 15mL;
[0033] (2) Mix and stir methyltrimethoxysilane, dimethyldimethoxysilane, cetyltrimethylammonium bromide, N,N-dimethylamide, acetic acid solution and ethanol evenly, then set Stir and mix in a water bath at 40°C for 80 minutes to obtain a base liquid; among them, methyltrimethoxysilane, dimethyldimethoxysilane, hexadecyltrimethylammonium bromide, N,N-dimethyl The dosage ratio of amide, acetic acid and eth...
Embodiment 3
[0038] A method for preparing a high-performance thermal insulation composite board, comprising the following steps:
[0039] (1) Soak the cotton raw material in concentrated sulfuric acid solution, let it stand for 25 minutes, and then stir it in a water bath at 45°C for 2.2 hours to obtain a cellulose solution; wash and centrifuge the prepared cellulose solution with deionized water Until the solution is neutral, remove the deionized water to obtain a cellulose sol; wherein, the ratio of the cotton raw material to the concentrated sulfuric acid solution is 1g:20mL;
[0040] (2) Mix and stir methyltrimethoxysilane, dimethyldimethoxysilane, cetyltrimethylammonium bromide, N,N-dimethylamide, acetic acid solution and ethanol evenly, then set Stir and mix in a water bath at 30°C for 60 minutes to obtain a base liquid; among them, methyltrimethoxysilane, dimethyldimethoxysilane, hexadecyltrimethylammonium bromide, N,N-dimethyl The dosage ratio of amide, acetic acid and ethanol is...
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