Preparing method of glass antifogging coating
An anti-fog coating and glass technology, applied in the coating and other directions, can solve the problems of poor anti-fog effect and durability, poor coating adhesion, poor cleaning ability, etc. Powerful cleaning effect
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example 1
[0018] First, weigh 150mL of 20% ethanol solution by weight and add it to a three-necked flask, adjust the pH to 3.0 with glacial acetic acid, and then add 3mL of methyltrimethoxysilane dropwise to the three-necked flask at a rate of 1 drop / s. Stir, and continue stirring for 40 minutes after the dropwise addition to obtain a silane coupling agent solution; then weigh 10 g of silicon dioxide with a particle size of 30 nm and add it to the beaker, add 100 mL of deionized water to the beaker, and ultrasonically disperse at 180W for 10 minutes. To obtain the nano-silica sol, slowly add the nano-silica sol dropwise to the above-mentioned three-necked flask equipped with the silane coupling agent solution, control the dropwise addition completely in 15 minutes, put it into the water bath after the dropwise addition, and set the temperature at 45 Stir and react for 20 hours under the condition of ℃ and rotating speed of 200r / min. After the reaction, cool to room temperature to obtain ...
example 2
[0021] First, weigh 175mL of 23% ethanol solution by weight and add it to a three-necked flask, adjust the pH to 3.5 with glacial acetic acid, and then add 4mL of methyltrimethoxysilane dropwise to the three-necked flask at a rate of 1 drop / s. Stir, and continue stirring for 45 minutes after the dropwise addition to obtain a silane coupling agent solution; then weigh 13g of silicon dioxide with a particle size of 35nm and add it to the beaker, add 125mL deionized water to the beaker, and ultrasonically disperse at 190W for 13 minutes. To obtain the nano-silica sol, slowly add the nano-silica sol dropwise to the above-mentioned three-necked flask equipped with the silane coupling agent solution, control the dropwise addition completely in 18 minutes, put it into the water bath after the dropwise addition, and set the temperature at 48 Stir and react for 25 hours under the condition of ℃ and rotating speed of 300r / min. After the reaction, cool to room temperature to obtain the re...
example 3
[0024]First weigh 200mL of 25% ethanol solution by weight and add it to a three-necked flask, adjust the pH to 4.0 with glacial acetic acid, then add 5mL of methyltrimethoxysilane dropwise to the three-necked flask at a rate of 2 drops / s, and simultaneously Stir, and continue stirring for 50 minutes after the dropwise addition to obtain a silane coupling agent solution; then weigh 15g of silicon dioxide with a particle size of 40nm and add it to the beaker, add 150mL deionized water to the beaker, and ultrasonically disperse at 200W for 15 minutes. To obtain the nano-silica sol, slowly add the nano-silica sol dropwise to the above-mentioned three-necked flask equipped with the silane coupling agent solution, control the dropwise addition completely in 20 minutes, put it into the water bath after the dropwise addition, and set the temperature at 50 Stir and react for 30 hours under the condition of ℃ and rotating speed of 400r / min. After the reaction, cool to room temperature to...
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