Method for preparing anti-fogging and anti-adhesion plastic film by nano-silica-polyhedral oligomeric silsesquioxane
A technology of nano-silica and silsesquioxane, applied in the direction of coating, etc., can solve the problems of poor water resistance, affect the application effect, shorten the anti-fogging time, etc., and achieve the improvement of water barrier performance and mechanical properties, and the wetting process The effect of slowing down and reducing the coefficient of friction
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Embodiment 1
[0024] A method for preparing anti-fogging and anti-adhesion plastic film with nano silicon dioxide-cage silsesquioxane, is characterized in that, comprises the steps:
[0025] (1) Pretreatment of nano-silica:
[0026] Dry 2 parts of nano-silica powder in an oven at 140-145°C for 1 hour, mix and disperse 0.01 part of coupling agent with alcohol-water dilution, add dried nano-silica powder to it, and stir for 7 hours. Ultrasonic treatment for 1 hour, suction filtration, washing, drying in an oven at 80-83°C for 5 hours, and grinding to obtain nano-silica treated with coupling agent;
[0027] (2) Synthesis of water-resistant copolymers by free radical polymerization in aqueous solution:
[0028] Partially neutralize 5 parts of acrylic acid with sodium hydroxide solution, mix with 0.5 parts of hydroxyethyl methacrylate, 0.004 parts of crosslinking agent, and deionized water, blow nitrogen gas for 15 minutes, put it in a water bath at 70-73 ° C, add 0.01 part of initiator, conde...
Embodiment 2
[0038] A method for preparing anti-fogging and anti-adhesion plastic film with nano silicon dioxide-cage silsesquioxane, is characterized in that, comprises the steps:
[0039] (1) Pretreatment of nano-silica:
[0040] Dry 3 parts of nano-silica powder in an oven at 140-145°C for 2 hours, mix and disperse 0.02 parts of coupling agent with alcohol-water dilution, add dried nano-silica powder to it, and stir for 8 hours. Ultrasonic treatment for 2 hours, suction filtration, washing, drying in an oven at 80-83°C for 6 hours, and grinding to obtain nano-silica treated with coupling agent;
[0041] (2) Synthesis of water-resistant copolymers by free radical polymerization in aqueous solution:
[0042] Partially neutralize 10 parts of acrylic acid with sodium hydroxide solution, mix with 1 part of hydroxyethyl methacrylate, 0.009 parts of cross-linking agent, and deionized water, pass nitrogen gas for 20 minutes, put it in a water bath at 70-73 ° C, add 0.03 parts of initiator, co...
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