Reinforced transparent hydrophobic coating and preparation method thereof
A hydrophobic coating and transparent technology, applied in the coating and other directions, can solve the problems of inability to realize large-scale large-scale preparation of functional coatings, unfavorable applications, complex methods, etc., and achieve superior mechanical strength, low cost, and simple preparation process. Effect
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Embodiment 1
[0029] Silica solid nanospheres with a particle size of 20 nm were prepared by the Stober method (J. Colloid Interface Sci., 1968, 26, 62-69.).
[0030] The polyacrylic acid solution (30wt%, molecular weight is 5000) of 0.3g is dissolved in the ammoniacal liquor of 4.5 milliliters, ultrasonic dispersion 10 minutes; Then in 90 milliliters of dehydrated alcohols, stir 15 minutes to obtain mixed liquor; Ethoxysilane was added dropwise to the mixture at a rate of 45 microliters per minute; after the dropwise addition, stirring was carried out at room temperature for 3 hours, and centrifuged to obtain hollow silica nanospheres with a particle size of 45 nm;
[0031] Dissolve glucose and epichlorohydrin in 0.8M sodium hydroxide solution, control the molar ratio of 1:10, react for 5 hours, add 2-aminoethyl methacrylic acid, control the molar ratio of 1:1, and react for 24 hours. A glucose-functionalized 2-aminoethyl methacrylate polymer was obtained.
[0032] Mix 20nm silica solid n...
Embodiment 2
[0038] Silica solid nanospheres with a particle size of 100 nm were prepared by the Stober method.
[0039]The polyacrylic acid solution (30wt%, molecular weight is 10000) of 0.6g is dissolved in 4.5 milliliters of ammonia water, ultrasonic dispersion 10 minutes; Add dropwise in the absolute ethanol of 90 milliliters then, stir 15 minutes to obtain mixed liquor; Ethoxysilane was added dropwise to the mixed solution at a rate of 90 microliters per minute; after the dropwise addition was completed, it was stirred at room temperature for 10 hours to obtain a sol of hollow silica nanospheres with a particle size of 100 nm.
[0040] Dissolve fructose and epichlorohydrin in 0.8M sodium hydroxide solution, control fructose and epichlorohydrin molar ratio 1:10, after reacting for 5h, add 2-aminoethyl methacrylamide, control molar ratio 1: 1. After 24 hours of reaction, the fructose-functionalized 2-aminoethylmethacrylamide polymer can be obtained.
[0041] Mix 100-nanometer silica so...
Embodiment 3
[0044] A solid silica sol with a particle size of 100 nm was prepared by the Stober method.
[0045] 0.3 g of polyacrylic acid solution (30 wt %, molecular weight 5000) was dissolved in 4.5 ml of ammonia water, ultrasonically dispersed for 10 minutes; then added dropwise in 90 ml of absolute ethanol, stirred for 15 minutes to obtain a mixed solution; 2 ml of tetraethyl Oxysilane was added dropwise to the mixed solution at a rate of 45 microliters per minute; after the dropwise addition, it was stirred at room temperature for 10 hours to obtain a hollow silica sol with a particle size of 45 nm;
[0046] Dissolve galactose and epichlorohydrin in 1M sodium hydroxide solution, control the molar ratio of 1:10, react for 5 hours, add methacrylic acid, control the molar ratio of 1:1, and react for 24 hours to obtain galactose functionalization Methacrylic polymer.
[0047] Mix 100nm silica solid nanospheres with 45nm silica hollow nanospheres at a mass ratio of 1:1, dissolve them in...
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