Hardening liquid for glass fiber plastic mobile phone rear shell and coating method

Abstract

The invention discloses a hardening liquid for a rear shell of a glass fiber plastic mobile phone, and relates to the field of hardening liquid preparation and coating, the hardening liquid comprises the following components in percentage by weight: 2.50% of photoinitiator 184, 0.05% of TPO (thermoplastic polyolefin), 10.00% of diluent MIBK (methyl isobutyl ketone), 56.75% of 9-functional polyurethane acrylate, 13.50% of F modified 9-functional acrylate, 2.20% of 3-micron tetrafluoroethylene wax, 7.50% of DMAA (dimethylacrylamide), 6.00% of vinyl coupling agent, 1.00% of polyester modified organic silicon and 0.50% of AF assistant. According to the hardening liquid for the rear shell of the glass fiber plastic mobile phone, new components of the hardening liquid are added, the proportion is adjusted, vinyl reacts with urethane acrylate in a UV liquid, Si-OH is formed through hydrolysis, then the Si-OH is condensed with Si-OH on the surface of glass fiber, covalent bond combination of the glass fiber and silane is achieved, and the high adhesive force performance on a specific glass fiber plastic base material is achieved; and the wear resistance and hardness of the mobile phone rear shell are improved.

Description

technical field [0001] The invention relates to the technical field of hardening liquid preparation and coating, in particular to a hardening liquid for a glass fiber plastic mobile phone rear case. Background technique [0002] At present, the manufacturing standard for the thickness of mobile phone back shells generally does not exceed 0.65mm, and most of them are made of ordinary plastic materials. However, because of low modulus, low rigidity of materials, and easy deformation of ordinary plastic back shells, the current minimum thickness can only be 0.5mm. Pursuing a thinner and higher-quality mobile phone back case is also one of the important technological innovations in the mobile phone production industry. [0003] According to research, glass fiber plastic has very superior comprehensive properties, excellent mechanical strength, excellent wear resistance, etc. The use of glass fiber plastic as the base material for high-quality mobile phone casings will become one...

AI Technical Summary

Problems solved by technology

[0004] Most of the mobile phone back shell coatings on the market have unsatisfactory effects on glass fiber and other special plastic materials, and the adhesion is poor, so it is difficult to pass strict non-conventional tests

Moreover, the coating of the back shell of the mobile phone has poor wear resistance, which makes the back shell of the mobile phone easy to be damaged. The coating is not fine enough, the texture is not three-dimensional, and fingerprints are easy to leave, which seriously affects the appearance of the mobile phone.