Spot-spraying varnish for vehicle and spraying repair process of spot-spraying varnish

By combining carboxylated polycarbonate and epoxy polyacrylate resin in automotive varnish, and forming a crosslinked structure through the reaction of carboxylate and epoxy groups, the existing varnish has been solved, and higher adhesion, chemical corrosion resistance and weather resistance are achieved.

CN120173466AActive Publication Date: 2025-06-20微峰科技有限公司
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Patent Information

Application Number
CN202510355792.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2025-06-20
Estimated Expiration
2045-03-25

AI Technical Summary

Technical Problem

The existing automotive varnish has poor water resistance and durability, poor tolerance to the external environment, and excessive repair during repair leads to depreciation of the vehicle's value.

Method used

An automotive dot spray varnish is used, which includes 10 to 30 parts of carboxylated polycarbonate, 35 to 60 parts of epoxy polyacrylate resin, 6 to 12 parts of crosslinking agent, 0.1 to 8.0 parts of additives, and 2 to 4 parts of initiator. The crosslinking structure is formed by the reaction between the carboxyl group and the epoxy group, and the comprehensive performance of the paint film is improved.

Benefits of technology

It significantly improves the adhesion, chemical corrosion resistance, water resistance, weather resistance and other comprehensive properties of the varnish, making the paint film denser, surface hardness and mechanical properties improve, thereby extending the service life.

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Abstract

The invention discloses spot-spray varnish for a vehicle, which comprises the following components in parts by mass: 10-30 parts of carboxylated polycarbonate, 35-60 parts of epoxy polyacrylate resin, 6-12 parts of a cross-linking agent, 0.1-8.0 parts of an auxiliary agent and 2-4 parts of an initiator, and relates to the technical field of automobile varnish. According to the invention, carboxylated polycarbonate and epoxy polyacrylate resin are utilized to construct a varnish cross-linked network, and a polycarbonate structure is introduced to improve the impact resistance, water resistance, chemical erosion resistance and other properties of a paint film; and the spraying repair process of spot-spraying varnish is optimized, original vehicle paint is reserved to a greater extent, and excessive maintenance is avoided.
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