A kind of high wear-resistant UV resin with anti-fingerprint function and preparation method thereof

Abstract

The invention relates to a high wear-resistant UV resin with anti-fingerprint function and a preparation method thereof. The raw materials of the resin include the following components: isocyanate mixture, perfluoropolyether alcohol with a hydroxyl group at one end, and single-end carbohydroxypolysiloxane and a mixture of two-terminal carbohydroxypolysiloxane, a linear polyester diol free of fluorine and silicon, a hydroxyacrylate containing a polyurethane structure, and a polyurethane reaction catalyst; the present invention converts perfluorinated The polyether and silicone segments are introduced into the UV resin polymer molecular chain at the same time, and the synergistic effect of fluorosilicon molecules is used to reduce the friction coefficient and surface energy of the resin surface, so that the prepared UV resin has good anti-fingerprint and wear resistance; At the same time, the hydrogen bond content of the molecular chain is increased by introducing a relatively high content of carbamate into the molecular chain of the UV resin polymer, thereby increasing the cohesive energy of the molecular chain and further improving the wear resistance of the UV resin.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high wear-resistant UV resin with an anti-fingerprint function, and further to a method for preparing the UV resin. Background technique [0002] With the rapid development of 5G technology, the utilization rate of plastic materials on surfaces such as electronic communication equipment is gradually increasing, and there is a great tendency to replace existing glass, ceramics and metals. However, the plastic surface is not wear-resistant and easy to stick to dirt, so it needs to be treated with wear-resistant and anti-fouling in practical applications. [0003] UV coatings belong to purple curing coatings, which are mainly composed of oligomers, reactive diluents, photoinitiators and additives. They have high hardness and good wear resistance. Coating on the surface of plastics can improve their resistance Moreover, UV coatings have the characteristics of low-tempera...

AI Technical Summary

Problems solved by technology

The curing mechanism of UV coatings is mainly the free copolymerization of acrylate functional groups. After curing, there are a large number of polar functional groups on the surface of the paint film. It spreads on the surface, so the surface of the UV coating is not very resistant to staining

[0004] In recent years, researchers have successively proposed to add anti-fingerprint additives to the existing UV coatings to solve the problem that the surface of the paint film is not stain-resistant. For example, a Chinese invention patent with application number CN200580014573. The perfluoropolyether modified acrylate with staining effect can improve the stain resistance of the paint film when added to UV coatings, but the compound has poor compatibility with ordinary UV resins, resulting in poor abrasion resistance of the final paint film good

[0005] Another U.S. patent with the application number US15029867 discloses an anti-fingerprint additive for UV coatings, which can make the paint film have higher anti-fingerprint and abrasion resistance. However, this compound is still only able to do It is used as a functional additive and cannot be used as the main UV resin in the formulation of UV coatings. Therefore, the final paint film has poor wear resistance and cannot meet the requirements of high wear resistance.

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