A kind of varnish for repairing vehicles

Abstract

The invention provides a varnish for repairing vehicles, which comprises two parts of a paint and a catalyst. The paint includes the following components in parts by weight: 55-60 parts of alkoxymethyl silicone resin, 0.2-60 parts of defoaming agent 0.3 parts, 2.5-3.5 parts of functional additives, 0.3-0.5 parts of leveling agent, 0.5-1.0 parts of thickener, 35-41 parts of diluent; by weight, the catalyst includes 25-30 parts of organotin drier , 70‑75 parts of butyl acetate. During construction, the paint and the catalyst are mixed according to the weight ratio of 10:1. The varnish provided by the invention does not contain a curing agent and has good flexibility. The paint material adopts alkoxymethyl silicone resin so that the paint film formed after the varnish is applied has excellent properties such as good appearance, high gloss, and fullness, and can be directly used on old The repaired paint film has excellent appearance, gloss and aging resistance. Like the new paint film, the paint film has no deformation, cracks and obvious discoloration under high temperature. The trans-dimethyl resin of the resin The structure cooperates with the fluorine-containing surface additives, so that the paint film has good anti-graffiti performance and good anti-staining performance.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a varnish for repairing vehicles. Background technique [0002] With the development of my country's high-speed rail technology and the country's great investment in railway construction, my country's railway mileage is getting longer and longer. The initial Harmony locomotives and high-speed rail trains have been in operation for more than 10 years. Cracks, loss of gloss and other paint film problems, traditional repair varnishes have poor flexibility, poor gloss, cannot fill small cracks, and usually contain curing agents, resulting in the need to remove the old paint by grinding or sandblasting during construction , and then re-spray the paint and varnish, and then bake the paint to dry, which requires a lot of manpower, material resources and time, and requires a lot of construction site and energy. Contents of the invention [0003] The purpose of the invention is to provide a repai...

AI Technical Summary

Problems solved by technology

[0002] With the development of my country's high-speed rail technology and the country's great investment in railway construction, my country's railway mileage is getting longer and longer. The initial Harmony locomotives and high-speed rail trains have been in operation for more than 10 years. Cracks, loss of gloss and other paint film problems, traditional repair varnishes have poor flexibility, poor gloss, cannot fill small cracks, and usually contain curing agents, resulting in the need to remove the old paint by grinding or sandblasting during construction , and then re-spray the paint and varnish, and then bake the paint to dry, which requires a lot of manpower, material resources and time, and requires a lot of construction site and energy.

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