Hydrophobic scratch-resistant coating on organic polymer surface and preparation method thereof
A polymer and scratch-resistant technology, applied in the field of UV-curable coating materials, can solve the problems of decreased transmittance, easy shedding, macroscopic phase separation, etc., and achieve the effect of strong adhesion, high hardness and good hydrophobicity
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[0054] Example 1:
[0055] In a reactor equipped with a stirrer and a dropping funnel, add 46.8g of ethyl orthosilicate, 168g of γ-methacryloxytrimethoxysilane, and 53.7g of ethanol, stir at room temperature for 10 minutes, and add 9g of silica sol, 0.4 g nitric acid and 58.5 g of water are mixed uniformly, placed in a dropping funnel, dripped in 0.5-1 hour, stirred for 6-8 hours, and aged for 24 hours to obtain an organic-inorganic hybrid resin.
Example Embodiment
[0056] Example 2:
[0057] In a reactor equipped with a stirrer and a dropping funnel, add 46.8g of ethyl orthosilicate, 168g of γ-methacryloxytrimethoxysilane, and 53.7g of ethanol, stir at room temperature for 10 minutes, add 18g of silica sol, 0.41 g nitric acid and 52.2 g of water are mixed uniformly, placed in a dropping funnel, dripped in 0.5-1 hour, stirred and aged for 6-8 hours, and aged for 24 hours to obtain an organic-inorganic hybrid resin.
[0058] 2. Preparation of organic-inorganic hybrid UV-curable coating for bottom coating
Example Embodiment
[0059] Example 3:
[0060] Mix 97.5 g of resin prepared in Example 1, 11.2 g of urethane acrylate, 8.4 g of epoxy acrylate, 8.4 g of trimethylolpropane triacrylate, 1.12 g of photoinitiator Darocur 1173, and 0.38 g of leveling agent. Stir evenly to obtain an organic-inorganic hybrid coating.
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