Transparent water-impact-resistant super-lyophobic coating as well as preparation method and application of transparent water-impact-resistant super-lyophobic coating
A super-lyophobic and coating technology, applied in coatings, primers, etc., can solve the problems of haze influence, unexplained wear resistance and weather resistance, water impact resistance, and reduced mechanical stability, so as to achieve low cost and suitable The effect of large-scale production and simple preparation process
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[0068] Example 1
[0069] First, prepare primer solution: dissolve 0.63 g of ethylene acrylic acid copolymer (20 wt% acrylic acid content) in tetrahydrofuran (30 mL) and butyl acetate (60 mL), stir until completely dissolved, and save for use;
[0070] Next, prepare the topcoat liquid: Disperse 1g of hydrophobic fumed nano-silica in isopropanol (100mL) by ultrasonic for 30min (ultrasonic power 650W) to obtain a blue-colored transparent dispersion, the secondary particles of nano-silica before ultrasonication The diameter is more than 500nm, and most of them are micron-scale aggregates. After ultrasonication, the secondary particle size is reduced to less than 200nm, and they are stored for use;
[0071] Finally, the coating is prepared by spraying method: the primer liquid is sprayed on the surface of the glass substrate to form a film, the spraying pass is 30 times, and the spraying thickness is within 100nm, and the spraying process is controlled to ensure that the film is t...
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[0076] Example 2
[0077] First, prepare primer solution: dissolve 0.63 g of acrylic resin in butyl acetate (90 mL), stir until completely dissolved, and save for use;
[0078]Next, prepare the topcoat liquid: Disperse 1g of hydrophobic fumed nano-silica in isopropanol (100mL) by ultrasonic for 30min (ultrasonic power 650W) to obtain a blue-colored transparent dispersion, the secondary particles of nano-silica before ultrasonication The diameter is more than 500nm, and most of them are micron-scale aggregates. After ultrasonication, the secondary particle size is reduced to less than 200nm, and they are stored for use;
[0079] Finally, the coating is prepared by spraying method: the primer liquid is sprayed on the surface of the glass substrate to form a film, the spraying pass is 15 times, and the spraying thickness is within 50nm, and the spraying process is controlled to ensure that the film is transparent, and the first coating is obtained. Then, the topcoat liquid is sp...
Example Embodiment
[0082] Example 3
[0083] First, prepare a primer solution: dissolve 0.63 g of butyl acetate cellulose in butyl acetate (90 mL), stir until completely dissolved, and save for use;
[0084] Next, prepare the topcoat liquid: Disperse 1g of hydrophobic fumed nano-silica in isopropanol (100mL) by ultrasonic for 30min (ultrasonic power 650W) to obtain a blue-colored transparent dispersion, the secondary particles of nano-silica before ultrasonication The diameter is more than 500nm, and most of them are micron-scale aggregates. After ultrasonication, the secondary particle size is reduced to less than 200nm, and they are stored for use;
[0085] Finally, the coating is prepared by spraying method: the primer liquid is sprayed on the surface of the glass substrate to form a film, the spraying pass is 30 times, and the spraying thickness is within 100nm, and the spraying process is controlled to ensure that the film is transparent, and the first coating is obtained. Then, the topcoa...
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