Anti-ageing epoxy paint, preparation method and application thereof

Abstract

The invention discloses anti-ageing epoxy paint, a preparation method and an application thereof. The anti-ageing epoxy paint is prepared by the following components: 30-55 parts of epoxy resin, 0-5 parts of reactive diluent, 5-15 parts of pigment, 22.5-40 parts of filler, 1.0-2.0 parts of aids, 0.5-5.0 parts of anti-ageing agent, 40-80 parts of amine curing agent and 20-70 parts of solvent, wherein the anti-ageing agent is a substance with a hinderde-amine structure. In the invention, the solvent, epoxy resin, reactive diluent, anti-aging agent and auxiliary agent are mixed, then added with pigment and filler, mixed evenly, filtrated to obtain component A; the amine curing agent and the solvent are mixed evenly and filtrated to obtain component B; and before coating, component A and component B are mixed to obtain the anti-aging epoxy paint. The anti-ageing agent epoxy paint prepared by the invention has the advantages of low cost, long stationary phase for storage and excellent weather resistance, can meet the requirement of long-term outdoor application, and is applicable to floor coating, paint for internal and external walls and protective coating of steel structures.

Description

technical field The invention belongs to the field of coatings, in particular to an anti-aging epoxy coating and its preparation method and application. Background technique Traditional epoxy coatings have the advantages of high bonding strength, excellent chemical resistance, and wide adaptability, which can meet most of the coating needs of modern industries. However, the base material of traditional epoxy coatings is mostly bisphenol A epoxy resin with a benzene ring main chain structure. The benzene rings in the chemical structure of the resin itself are easily decomposed by ultraviolet light, which makes epoxy coatings , prone to chalking, discoloration and fading, which seriously affect the use of epoxy coatings outdoors. In order to improve the defect that traditional epoxy coatings are prone to aging, expensive hydrogenated epoxy and alicyclic amine curing agents are often used. This can certainly solve the aging problem, but the basic raw materials of these two ty...