Nano composite transparent heat-insulating coating and preparation method thereof
A heat-insulating coating and nano-composite technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of complex process conditions, poor heat insulation effect, and high production costs, and achieve simple process conditions and good visible light transmission. efficiency and low production cost
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Embodiment 1
[0032] (1) Preparation of gallium trioxide-tin dioxide nanopowder
[0033] Add each substance into the beaker according to the ratio of gallium nitrate: tin chloride: deionized water = 0.05mol: 0.015mol: 4mol, then add 0.3g polyvinylpyrrolidone and 0.015mol urea, stir and dissolve the mixed solution in 100mL Crystallize at 180 ° C for 48 h in a high-pressure reactor with a polytetrafluoroethylene liner, and cool to room temperature after the crystallization is complete. The resulting precipitate was then centrifuged and washed five times each with distilled water and ethanol. Afterwards, the precipitate was dried in an oven at 80 °C for 24 h to obtain the desired precursor powder. Finally, the sample was calcined at a high temperature of 700°C for 6 hours, and the gallium trioxide-tin dioxide nanopowder was obtained after natural cooling.
[0034] (2) Preparation of gallium trioxide-tin dioxide ethanol slurry
[0035] Add 40g of absolute ethanol and 18g of gallium trioxide-...
Embodiment 2
[0039] (1) Preparation of gallium trioxide-tin dioxide nanopowder
[0040] Add each substance into the beaker according to the ratio of gallium nitrate: tin chloride: deionized water = 0.05mol: 0.015mol: 7mol, then add 0.3g polyvinylpyrrolidone and 0.015mol urea, stir and dissolve the mixed solution in 100mL Crystallize at 180 ° C for 48 h in a high-pressure reactor with a polytetrafluoroethylene liner, and cool to room temperature after the crystallization is complete. The resulting precipitate was then centrifuged and washed five times each with distilled water and ethanol. Afterwards, the precipitate was dried in an oven at 80 °C for 24 h to obtain the desired precursor powder. Finally, the sample was calcined at a high temperature of 700°C for 6 hours, and the gallium trioxide-tin dioxide nanopowder was obtained after natural cooling.
[0041] (2) Preparation of gallium trioxide-tin dioxide ethanol slurry
[0042] Add 40g of absolute ethanol and 18g of gallium trioxide-...
Embodiment 3
[0046] (1) Preparation of gallium trioxide-tin dioxide nanopowder
[0047] Add each substance into the beaker according to the ratio of gallium nitrate: tin chloride: deionized water = 0.05mol: 0.015mol: 7mol, then add 0.3g polyvinylpyrrolidone and 0.015mol urea, stir and dissolve the mixed solution in 100mL Crystallize at 180 ° C for 48 h in a high-pressure reactor with a polytetrafluoroethylene liner, and cool to room temperature after the crystallization is complete. The resulting precipitate was then centrifuged and washed five times each with distilled water and ethanol. Afterwards, the precipitate was dried in an oven at 80 °C for 24 h to obtain the desired precursor powder. Finally, the sample was calcined at a high temperature of 700°C for 6 hours, and the gallium trioxide-tin dioxide nanopowder was obtained after natural cooling.
[0048] (2) Preparation of gallium trioxide-tin dioxide ethanol slurry
[0049] Add 40g of absolute ethanol and 18g of gallium trioxide-...
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