Varnish for repairing vehicles

Abstract

The invention provides a varnish for repairing vehicles. The varnish comprises a paint vehicle and a catalyst. The paint vehicle comprises the following components by weight: 55-60 parts of alkoxy methyl silicone resin, 0.2-0.3 part of a defoaming agent, 2.5-3.5 parts of a functional assistant, 0.3-0.5 part of a leveling agent, 0.5-1.0 part of a thickener and 35-41 parts of a diluent; and the catalyst comprises the following components by weight: 25-30 parts of an organic tin drier and 70-75 parts of butyl acetate. During construction, the paint vehicle and the catalyst are compounded according to a weight ratio of 10:1. The varnish provided by the invention does not contain curing agent, and has good flexibility, the paint vehicle adopts alkoxy methyl silicone resin, so that a paint filmformed after application of the varnish has good appearance, high gloss, fullness and other excellent properties, can be directly used for repairing on old colored paint, a repaired paint film has excellent appearance, gloss and aging resistance, and is the same as a new paint film, and is free of deformation, cracking and obvious discoloration at high temperature, and a trans-dimethyl structure of resin cooperates with a fluorine-containing surface aid, so that the paint film has good anti-doodling performance and stain resistance.

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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