Photocuring environment-friendly type weather resistance PVD (physical vapor deposition) finishing coat and preparation method and application thereof

Abstract

The invention discloses photocuring environment-friendly type weather resistance PVD (physical vapor deposition) finishing coat and a preparation method and application thereof. The finishing coat is prepared from the following ingredients in parts by weight: 20 to 50% of organic silicon resin, 10 to 35% of urethane acrylate, 10 to 20% of acrylate monomer, 5 to 30% of inorganic-organic hybrid particle, 1 to 5% of photoinitiator, 0.6 to 3% of light stabilizer and 0.5 to 3% of additive. Weather resistance of the PVD finishing coat disclosed by the invention is improved from multiple paths. According to the photocuring environment-friendly type weather resistance PVD finishing coat disclosed by the invention, a UV photocuring technology is utilized to solve the problem of serious pollution caused by water chromium plating and a traditional solvent type PVD finishing coat technology. The PVD finishing coat disclosed by the invention can be applied to the fields of mobile phone, automobile metal exterior, marine equipment and the like which have strict requirements for weather resistance.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a light-curing environment-friendly weather-resistant PVD topcoat and its preparation and application. Background technique [0002] Physical vapor deposition (Physical Vapor Deposition, PVD) technology refers to the use of low-voltage, high-current arc discharge technology under vacuum conditions, using gas discharge to evaporate the target material and ionize the evaporated substance and gas, and use the electric field The accelerated action of the vaporized material and its reaction products are deposited on the workpiece. Vacuum coating materials obtained by using PVD technology have both metal texture and light plastic properties. In recent years, they have been widely used in daily-use fields such as 3C products (mobile phones, computers, TVs), automotive lamp reflectors and decorative parts, and cosmetic packaging. application. [0003] In the premise of the application of PVD te...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the serious environmental pollution problem that the coating process represented by water-based chrome plating and the PVD topcoat preparation process based on traditional solvent-based PVD topcoats produce, and the attachment of current UV photocurable PVD topcoats. Focusing on the lack of comprehensive performance such as strength and weather resistance, an environmentally friendly light-curing weather-resistant PVD topcoat is provided, which can be used in fields with high weather resistance requirements, and can meet the needs of light-curing PVD topcoats in mobile phones and automotive lamp reflectors. , ocean engineering and other high-end fields with demanding weather resistance requirements

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