Highly permeable anti-fog film for energy-saving buildings and preparation method thereof
A permeable and architectural technology, applied in the direction of climate sustainability, sustainable manufacturing/processing, coating, etc., can solve problems such as poor permeability, difficult dispersion of metal powder, uneven film formation, etc.
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Embodiment 1
[0029] A method for preparing a high-permeability anti-fog film for energy-saving buildings, comprising the following steps:
[0030] S1. Take nano-copper powder with an average particle size of 100nm and add it to absolute ethanol to make a suspension with a mass fraction of 0.05%. Add 0.008% sodium dodecylbenzenesulfonate to the weight of the suspension, and disperse it by ultrasonic for 45min. , to obtain a negatively charged nano-copper powder dispersion;
[0031] S2, making SiO 2 The sol is ready for use, and then the cationic polymer dispersant is used to treat the SiO 2 The sol particles are modified to obtain a cationic hybrid nano-silica sol; the cationic polymer dispersant is PVAD ((4-vinylpyridine)-acrylamide-DMC copolymer);
[0032] S3, mixing the high light transmittance UV prepolymer coating solution, the photoinitiator and the cationic hybrid nano-silica sol obtained in step S2 under light-shielding conditions,
[0033] Stir to obtain a positively charged coa...
Embodiment 2
[0036] A method for preparing a high-permeability anti-fog film for energy-saving buildings, comprising the following steps:
[0037] S1. Take nano-copper powder with an average particle size of 200nm and add it to absolute ethanol to make a suspension with a mass fraction of 0.01%. Add 0.008% sodium dodecylbenzenesulfonate to the weight of the suspension, and disperse it ultrasonically for 60 minutes. , to obtain a negatively charged nano-copper powder dispersion;
[0038] S2, making SiO 2 The sol is ready for use, and then the cationic polymer dispersant is used to treat the SiO 2 The sol particles are modified to obtain a cationic hybrid nano-silica sol; the cationic polymer dispersant is PSAD (styrene-acrylamide-DMC copolymer);
[0039] S3, mixing the high light transmittance UV prepolymer coating solution, the photoinitiator and the cationic hybrid nano-silica sol obtained in step S2 under light-shielding conditions,
[0040] Stir to obtain a positively charged coating...
Embodiment 3
[0043] A method for preparing a high-permeability anti-fog film for energy-saving buildings, comprising the following steps:
[0044] S1. Take nano-copper powder with an average particle size of 50nm and add it to absolute ethanol to make a suspension with a mass fraction of 0.01%. Add 0.008% of the weight of the suspension to sodium dodecylbenzene sulfonate, and disperse it ultrasonically for 30 minutes. , to obtain a negatively charged nano-copper powder dispersion;
[0045] S2, making SiO 2 The sol is ready for use, and then the cationic polymer dispersant is used to treat the SiO 2 The sol particles are modified to obtain cationic hybrid nano-silica sol; the cationic polymer dispersant is PSVD (styrene-(4-vinylpyridine)-DMC copolymer;
[0046] S3, mixing the high light transmittance UV prepolymer coating solution, the photoinitiator and the cationic hybrid nano-silica sol obtained in step S2 under light-shielding conditions,
[0047] Stir to obtain a positively charged ...
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