In recent years, smart phones, tablet computers and wearable electronic products are very popular and have developed into necessities for people's life and travel. However, how to make the touch screens of mobile phones, computers and other electronic products stain and fingerprint free from sweat or oil contamination has become an urgent issue to be solved.

Fingerprint components are generally composed of sweat, sebum (triglyceride, wax monoester) and a small amount of dead skin cells and dust. Therefore, to prevent fingerprints, the treated touch screen must be both waterproof and oil resistant.

Treatment of the touch screen with perfluoroalkyl silane, perfluoropolyether silane, fluoroalkyl silicone resin, fluoroalkyl substituted polysiloxane, perfluoroalkyl polyacrylate, perfluoroalkyl polyacrylate polyurethane copolymer, etc. can give the touch screen anti fouling and anti fingerprint performance. Among them, perfluoroalkyl polyacrylate, perfluoroalkyl polyacrylate polyurethane copolymer, etc. are mainly used for fingerprint prevention of household appliances such as galvanized sheets, mobile phones, computer tablets, etc., while fluorosilane and fluorosilicone resin are mostly used for the treatment of glass substrates such as touch screens because of the high hardness and good transparency of the coatings formed.

In addition, fluorosilane, fluorosilicone resin, etc. can be used to build a hydrophobic and oil repellent film similar to the lotus leaf effect, further improving the effect of antifouling and fingerprint prevention. For example, composite fluoro acrylic/silicone resin or epoxy fluorosilicone resin, fluoro siloxane oligomer, nano pigment, nano SiO2, etc. into a nano coating, which is sprayed on the surface of base materials such as household appliances. After curing, not only can a high gloss and transparent film be obtained, but also a film can show good anti fouling and anti fingerprint effects.

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