Solvent-free low-surface treating coating

Abstract

The invention discloses a solvent-free low-surface treating coating which is prepared by mixing resin, diluent, filler, curing agent, auxiliary and coupling agent. The solvent-free low-surface treating coating is prepared by using two kinds of mixed resin as base materials and proper amount of the filler, the auxiliary and the coupling agent through scientific material selecting and reasonable blending. The solvent-free low-surface treating coating is short in drying time, high in oil carrying, rust carrying and wet adhesive power, excellent in mechanical performance like impact resistance and flexibility, good in corrosion-resistant performance, high in practical value and wide in application prospect.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a solvent-free low surface treatment coating. Background technique [0002] Low surface treatment coatings are also called surface tolerance coatings, which can be painted with oil, rust, and wet in actual work. At present, there are many deficiencies in our country's rusty coatings: H2000 wet with rusty coating primer can solve the problems of returning rust after high-pressure water derusting and difficult surface treatment of wet steel plates, but E601 is a resin with a high viscosity. It needs to be adjusted with organic solvents such as xylene to be suitable for brushing. Using chromium pigments as rust conversion agents cannot solve the problem of high toxicity; watery and rusty paint with epoxy resin E44 and asphalt paint as the main components, with a large amount of Phosphoric acid is a rust conversion agent, which greatly reduces the performance of epoxy resin; the system of ta...

AI Technical Summary

Problems solved by technology

At present, there are many deficiencies in our country's rusty coatings: H2000 wet with rusty coating primer can solve the problems of returning rust after high-pressure water derusting and difficult surface treatment of wet steel plates, but E601 is a resin with a high viscosity. It needs to be adjusted with organic solvents such as xylene to be suitable for painting. Using chromium pigments as rust conversion agents cannot solve the problem of high toxicity; watery and rusty paint with epoxy resin E44 and asphalt paint as the main components can Phosphoric acid is a rust conversion agent, which greatly reduces the performance of epoxy resin; the system of tannic acid and phosphoric acid solves this problem, but the use of plasticizer dibutyl phthalate reduces the performance of curing agent. efficiency

Moreover, both of these two coatings use benzene-containing solvents, and the adhesion of the coating decreases significantly when the humidity is high or there is a water film; epoxy resin and polyvinyl butyral are used as film-forming substances, and phosphoric acid-tannic acid It is used as a conversion solution, and the oily and rusty paint on steel with pigments used in various varieties also contains xylene solvent, which does not meet environmental protection requirements