Anti-fingerprint glass coating with high friction coefficient and preparation method thereof

Abstract

The invention provides a preparation method of an anti-fingerprint glass coating with a high friction coefficient. The preparation method of the paint used by the coating comprises the following steps: uniformly mixing 20-25 parts by mass of perfluoroalkyl olefin, 8-12 parts by mass of vinylmethoxysilane and 6-8 parts by mass of hexamethyldisiloxane, stirring, heating to 80-100 DEG C, keeping thetemperature constant for 10-12 hours, heating to 110-120 DEG C through silicone oil, and purifying for 4-6 hours to obtain a perfluoropolyether alkylated oligomer with the molecular weight of 3000-4000; and uniformly stirring the following components in parts by mass: 15-25 parts of the obtained perfluoropolyether alkylated oligomer, 25-35 parts of nonafluoro-ethoxy-butane and 45-55 parts of heptafluoro-ethoxy difluoro methyl-propane, so as to obtain the required coating. The glass carrier treated by the coating has the excellent performances of high dynamic friction coefficient, fingerprint resistance, oil stain resistance, scratch resistance and the like. According to the invention, the defect that a common anti-fingerprint coating is used on a 3C rear cover in the 5G era can be effectively overcome, and the preparation method is simple, mild in reaction condition, and free of pollution and harm to human bodies and the environment.

Description

technical field [0001] The invention belongs to the fields of consumer 3C screens and optical touch screens, and in particular relates to an anti-fingerprint glass coating with a high friction coefficient and a preparation method thereof. [0002] technical background [0003] With the advent of the 5G era, the upgrading of science and technology is accelerating, metal and other shell substrates are no longer suitable for consumer electronics products, and mobile phones, tablet computers, etc. are playing more and more important roles in life. The screen has higher and higher requirements for tactility. For the front surface, which requires superior smoothness, the glass back cover on the back of the product needs a coating with low smoothness and anti-fingerprint. [0004] At present, the commonly used anti-fingerprint coatings all use the existing low dynamic friction coefficient perfluoropolyether siloxane coating, which makes the surface of the glass substrate smooth and ...

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used anti-fingerprint coatings all use the existing low dynamic friction coefficient perfluoropolyether siloxane coating, which makes the surface of the glass substrate smooth and smooth, and the dynamic friction coefficient is lower than 0.03. With the development and maturity of 5G technology, more and more consumer 3C product back covers will use glass back covers. The commonly used low dynamic friction coefficient coating is smooth and smooth, but it will cause 3C products to slip and break easily in the hand. It will lead to high maintenance costs. Without anti-fingerprint treatment, the glass will not be scratch-resistant, easy to get fingerprints and difficult to wipe off, and the commonly used anti-fingerprint coatings can only meet the performance requirements after high-temperature curing, and cannot be cured at low temperature.

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