Multi-component composite metal antirust paint and its preparation method

Abstract

The invention discloses a multi-component composite metal antirust paint and its preparation method. The metal antirust paint is composed of the following raw materials, by weight, 32-35 parts of a polypropylene resin, 28-32 parts of a bisphenol A epoxy resin, 10-15 parts of a phenolic resin, 17-25 parts of modified meerschaum powder, 1.4-1.6 parts of 8-hydroxyquinoline, 20-25 parts of dibutyl phthalate, 0.6-0.8 parts of calcium lignin sulphonate, 0.4-0.8 parts of polybutylene terephthalate, 0.3-0.5 parts of poly-4-methyl-1-pentene, 1.1-1.3 parts of 4,4-methylene-bis(2,6-di-t-butylphenol), 2-5 parts of a modified styrene-acrylate emulsion, 1.5-1.7 parts of carboxymethyl cellulose sodium, 0.4-1.0 part of vinyltrisilane, 0.4-0.7 parts of sodium stearate and 1.0-1.5 parts of sodium dodecyl benzene sulfonate. The film of the metal antirust paint has the advantages of good adhesion, fast drying, good heat resistance, environmental protection and no pollution, and the modified meerschaum powder and the modified styrene-acrylate emulsion which are added to the raw materials improve the excellent performances of high-polymer materials in the raw materials and simultaneously increase the corrosion and heat resistances of the metal antirust paint; and the preparation method of the metal antirust paint has the advantages of simplicity, low cost and suitableness for large-scale production.

Description

technical field [0001] The invention relates to a multi-component composite metal antirust paint and a preparation method thereof, belonging to the technical field of antirust materials. Background technique [0002] In recent years, epoxy zinc-rich paint is the most used industrial anti-rust paint to protect metal. Due to the relatively high density of metal zinc powder, in order to prevent the zinc powder from settling or slow down the settling speed of the zinc powder, it is necessary to add A certain amount of anti-settling agent; the viscosity of the paint will also increase when the anti-settling agent is added. When selecting polyamide resin, it is necessary to choose a resin with a small molecular weight (E44) as much as possible; in order to meet the brushability during construction , to add a large amount of solvent to the paint, the solvent seriously endangers the health of workers during construction, the solvent volatilizes into the air during the drying proces...

AI Technical Summary

Problems solved by technology

[0002] In recent years, epoxy zinc-rich paint is the most commonly used industrial anti-rust paint to protect metal. Due to the relatively high density of metal zinc powder, in order not to To settle or slow down the settling speed of zinc powder, it is necessary to add a certain amount of anti-settling agent to the paint; the viscosity of the paint will also increase when the anti-settling agent is added. When selecting polyamide resin, it is necessary to choose as small a Molecular weight resin (E44); in order to meet the brushability during construction, a large amount of solvent should be added to the paint. During construction, the solvent seriously endangers the health of workers, and the solvent volatilizes into the air during the drying process to pollute the environment. The construction cost is increased; the brittleness of the paint film after the curing of the small molecular weight resin is large, and the thermal expansion and contraction of the metal is large, and the paint film is easy to crack or fall off when the temperature changes