Anti-yellowing water-based coating agent and preparation method and coating technology thereof
A water-based coating and anti-yellowing technology, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of high cost and limited application, and achieve short production process, reduce aryl activity, save cost and energy consumption Effect
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Embodiment 1
[0024] An anti-yellowing water-based coating agent, prepared from the following components in proportion by weight: 97 parts of acrylate-modified polyurethane water emulsion, 1 part of ZnO powder with a particle size of 20-500 nanometers, 0.5 1.5 parts of leveling agent, 1.5 parts of crosslinking agent and 0.5 parts of acrylic thickener. The acrylate-modified polyurethane aqueous emulsion is a water-based polyurethane emulsion with a core-shell structure prepared by core-shell polymerization with aromatic polyurethane as the core and polyacrylate as the shell.
[0025] The preparation method of the anti-yellowing water-based coating agent: first 97 parts by weight of acrylate-modified polyurethane aqueous emulsion and 1 part by weight of ZnO powder with a particle size of 20-500 nanometers are dispersed by ultrasonic waves for 40 minutes, and then added 0.5 parts by weight of leveling agent, 1.5 parts by weight of cross-linking agent and 0.5 parts by weight of acrylic thickene...
Embodiment 2
[0028] An anti-yellowing water-based coating agent, prepared from the following components in proportion by weight: 95 parts of acrylate-modified polyurethane aqueous emulsion, 0.5 part of ZnO powder with a particle size of 20-500 nanometers, 1 0.5 parts of leveling agent, 0.5 parts of crosslinking agent and 2 parts of acrylic thickener. The acrylate-modified polyurethane aqueous emulsion is a water-based polyurethane emulsion with a core-shell structure prepared by core-shell polymerization with aromatic polyurethane as the core and polyacrylate as the shell.
[0029] The preparation method of the anti-yellowing water-based coating agent: first disperse 95 parts by weight of acrylate-modified polyurethane aqueous emulsion and 0.5 parts by weight of ZnO powder with a particle size of 20 to 500 nanometers for 40 minutes, and then add 1 part by weight of leveling agent, 0.5 parts by weight of crosslinking agent and 2 parts by weight of acrylic thickener, stir evenly until the vi...
Embodiment 3
[0032] An anti-yellowing water-based coating agent, prepared from the following components in proportion by weight: 90 parts of acrylate-modified polyurethane aqueous emulsion, 0.75 parts of ZnO powder with a particle size of 20-500 nanometers, 0.75 parts 1.5 parts of leveling agent, 2 parts of crosslinking agent and 1.5 parts of acrylic thickener. Acrylate modified polyurethane aqueous emulsion is PUA-830 produced by Xiamen Sanyi Jiutai Trading Co., Ltd.
[0033] The preparation method of the anti-yellowing water-based coating agent: first 90 parts by weight of acrylate-modified polyurethane aqueous emulsion and 0.75 parts by weight of ZnO powder with a particle size of 20-500 nanometers are dispersed by ultrasonic waves for 40 minutes, and then added 0.75 parts by weight of leveling agent, 2 parts by weight of cross-linking agent and 1.5 parts by weight of acrylic thickener, stir well until the viscosity reaches 3.5×10 4 mPa.s.
[0034] The coating process of the anti-yell...
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