Hydrophobic glass preparation method and hydrophobic glass
A technology of hydrophobic glass and hydrophobic film, applied in the field of hydrophobic glass, can solve problems such as structural damage, poor durability, and loss of hydrophobic function of hydrophobic glass
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Embodiment 1
[0030] This embodiment provides a method for preparing hydrophobic glass, comprising the following steps:
[0031] (1) Mix 1.5 parts by weight of concentrated ammonia water with a mixed solvent of 20 parts by weight of methanol and ethanol (volume ratio 1:2), and stir at 50°C for 22 minutes; then mix 2.5 parts by weight of orthobutyl silicate Mixed with the mixed solvent of methanol and ethanol (volume ratio 1:2) of 20 parts by weight and quickly added to the mixture of strong ammonia water, methanol and ethanol, then stirred at 50°C for 105 minutes, and the stirring speed was 200 rpm, The reaction obtains a first sol containing silica particles, wherein the average particle diameter of the silica particles is about 105 nm;
[0032] (2) γ-(2,3 glycidoxy) propyltrimethoxysilane of 2 parts by weight is added in the above-mentioned first sol, stirred for 1 hour; Then add 0.5 parts by weight of nano polyurethane elastomer, continue Stirring at 25°C for 120 minutes at a stirring s...
Embodiment 2
[0041] This embodiment provides a method for preparing hydrophobic glass, comprising the following steps:
[0042] (1) Mix 2 parts by weight of concentrated ammonia water with 10 parts by weight of acetone, and stir at 40°C for 30 minutes; then mix 4 parts by weight of tetraethyl silicate with 10 parts by weight of acetone and quickly add to the concentrated A mixture of ammonia water and acetone, then stirred at 40°C for 120 minutes at a stirring speed of 300 rpm, and reacted to obtain the first sol containing silica particles, wherein the average particle diameter of the silica particles was about 100nm;
[0043] (2) The 3-aminopropyltriethoxysilane of 3 weight parts is joined in the above-mentioned first sol, stirs 1.75 hours; Stirring at ℃ for 105 minutes at a stirring speed of 200 rpm to obtain the second sol;
[0044] (3) Add hydrochloric acid to the above-mentioned second sol, adjust the pH value to 4, then add 1 weight part of hydroxysilicone oil therein, and continue...
Embodiment 3
[0049] This embodiment provides a method for preparing hydrophobic glass, comprising the following steps:
[0050] (1) Mix 1 part by weight of concentrated ammonia water with 2.5 parts by weight of methanol, and stir at 45°C for 25 minutes; then mix 2 parts by weight of tetrabutyl silicate with 2.5 parts by weight of methanol and quickly add A mixture of ammonia water and methanol, then stirred at 45°C for 110 minutes at a stirring speed of 250 rpm, and reacted to obtain the first sol containing silica particles, wherein the average particle size of the silica particles was about 90nm;
[0051] (2) Add 1 part by weight of N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane to the above-mentioned first sol, stir for 0.5 hours; then add 0.1 parts by weight of nano For the polyolefin elastomer, continue to stir at 30°C for 90 minutes at a stirring speed of 300 rpm to obtain the second sol;
[0052] (3) Add nitric acid to the above-mentioned second sol, adjust the pH value to 4, ...
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