Non-yellowing wear-resistant cathodic electrophoretic paint and preparation method thereof

Abstract

The invention discloses a non-yellowing wear-resistant cathodic electrophoretic paint. The cathodic electrophoretic paint is characterized by being prepared from the following raw materials in parts by weight: 18-24 parts of epoxy acrylate, 25-36 parts of polyurethane resin, 6-12 parts of cardanol, 8-14 parts of methacrylic acid, 12-16 parts of glycerol, 7-11 parts of butyl acetate, 4-7 parts of polyvinyl alcohol, 0.4-0.8 part of sodium thiosulfate, 0.2-0.5 part of 2-ethyl-4-methylimidazole, 14-17 parts of titanium dioxide, 5-8 parts of melamine, 3-5 parts of kaolin, 2-4 parts of precipitated barium sulfate, 0.3-0.7 part of a silane coupling agent (KH-550), 15-18 parts of an additive, 17-21 parts of ethylene glycol ether acetate, 8-12 parts of propylene glycol methyl ether and 67-78 parts of deionized water. The epoxy acrylate and the polyurethane resin are compounded with a variety of materials after being subjected to graft modification, the prepared cathodic electrophoretic paint overcomes the defect of function singleness, has multiple functions, has the advantages of yellowing resistance, wear resistance, high whiteness, stable color and gloss, excellent adhesion and good gloss and color retention, can be applied to a substrate to endow the coated substrate with new surface properties and can meet the demand of people for high-performance paints.

Description

technical field [0001] The invention relates to an electrophoretic paint, in particular to a cathodic electrophoretic paint resistant to yellowing and abrasion and a preparation method thereof. Background technique [0002] Electrophoretic coatings and coating methods have been applied industrially since the 1960s. The use of electrophoretic coatings can operate in a fully closed cycle system, and the utilization rate of coatings can reach about 95% compared with conventional spraying. Electrophoretic coatings can be divided into anodic electrophoretic coatings and cathodic electrophoretic coatings according to the electrodes of the coated workpieces. At present, cathodic electrophoretic coatings are the most widely used, which use water-soluble or water-dispersible ionic polymers as film-forming materials, and the coated workpieces are used as cathodes. , a new type of low-pollution, energy-saving, resource-saving, protective and anti-corrosion coating applied by electrodep...

AI Technical Summary

Problems solved by technology

[0003] With the continuous development and progress of electrophoretic coating technology, people have put forward higher requirements for the performance of the coating, while the existing cathodic electrophoretic coating has a single function, poor throwing power, high curing temperature, and poor fire and flame retardant effect. , weak noise reduction function, low antibacterial decoration effect and other defects