Waterproof coating for textiles and preparation process thereof
A waterproof coating and preparation technology, which is applied in the direction of textiles and papermaking, can solve the problems that textiles are easily wetted by water, and achieve the effects of improving flexibility, increasing the degree of crosslinking, and avoiding cracks
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[0021] Preparation and performance characterization of waterproof coating
[0022] In order to prevent the remaining impurities on the surface of the substrate from affecting the performance of the coating, wipe the glass slide with absolute ethanol, and after it dries, apply the adjusted waterproof coating evenly on the surface with a silk stick. Dry it at room temperature for a period of time, put it into an oven, bake and solidify at a certain temperature, take it out and cool it, and use it for performance testing.
[0023] 1. Gloss: use KGZ-60 gloss meter to measure the sample;
[0024] 2. Adhesion: Based on GB / T1720-1979, use the circle method to detect the coating, and judge whether it is qualified according to the measured grade;
[0025] 3. Water resistance: Based on GB / T1773-1979, after soaking the sample in water for a specified number of days, if there is no matting, peeling or foaming on the surface, it is considered qualified;
[0026] 4. Flexibility: Based on ...
Embodiment 1
[0029] Embodiment 1 discloses a kind of waterproof coating that is used for textiles, and according to weight parts, preparation waterproof coating needs chemical reagent as follows:
[0030]
[0031] A kind of preparation technology for the waterproof coating of textile, comprises the steps:
[0032] S1. Add 5 parts of anionic / nonionic surfactant into the three-necked flask, then add 3 parts of deionized water and an appropriate amount of potassium hydroxide solution in turn, and stir at a constant speed for 15 minutes at room temperature to make it evenly mixed;
[0033] S2. Evaporate and condense the solution in step S1, wherein the heating temperature is 65 degrees Celsius;
[0034] S3. Add a mixed solution of 5 parts of octamethylcyclotetrasiloxane, 12 parts of methyltriethoxysilane and 11 parts of hexadecyltrimethoxysilane dropwise at a constant speed to the solution in step S2, and the addition is completed After constant temperature reaction for 8 hours, finally ad...
Embodiment 2
[0041] Embodiment 2 discloses a kind of waterproof coating that is used for textiles, and according to weight parts, preparation waterproof coating needs chemical reagent as follows:
[0042]
[0043]
[0044] A kind of preparation technology for the waterproof coating of textile, comprises the steps:
[0045] S1. Add anionic / nonionic surfactants into the three-necked flask, then add 5 parts of deionized water and an appropriate amount of potassium hydroxide solution in turn, and stir at a constant speed for 18 minutes at room temperature to make it evenly mixed;
[0046] S2. Evaporate and condense the solution in step S1, wherein the heating temperature is 70 degrees Celsius;
[0047] S3. Add a mixed solution of 7 parts of octamethylcyclotetrasiloxane, 13 parts of methyltriethoxysilane and 15 parts of hexadecyltrimethoxysilane dropwise at a constant speed to the solution in step S2, and the addition is completed After constant temperature reaction for 9 hours, finally ...
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