Epoxy wire enamel and preparation method thereof

Abstract

The invention discloses epoxy wire enamel which is characterized in that the viscosity flow time of the wire enamel is 20-50 s; and the epoxy wire enamel is prepared from raw materials in parts by weight (kilogram) as follows: 12-14 parts of nylon 11, 10-12 parts of E-44 epoxy resin, 3-4 parts of 2-butoxy-ethanol, 6-9 parts of isopropyl alcohol, 10-12 parts of ethoxylated trimethylolpropane triacrylate, 2-3 parts of aluminum dihydrogen phosphate, 1-2 parts of cellulose acetate, 2-3 parts of isocyanate, 1-2 parts of tannic acid, 10-12 parts of ethylene glycol, 10-12 parts of dimethyl terephthalate, 2-3 parts of 3-methylphenol, 5-6 parts of tetrabutyl titanate, 7-9 parts of an assistant, 100-110 parts of xylene and 120-130 parts of m, p-cresol. According to the epoxy wire enamel, a film with a uniform, compact and smooth surface can be formed in the follow-up process during coating, the micropores are reduced greatly, and the scratching resistance, the hardness, the salt spray resistance and the severe environment resistance of the film are remarkably improved.

Description

technical field [0001] The invention relates to an enameled wire varnish, in particular to an epoxy enameled wire varnish and a preparation method thereof. Background technique [0002] Enameled wire is a kind of electrical material. It processes a thin layer of high-strength insulating layer on the surface of a round copper wire to insulate it from the outside world. According to the specifications, it can be processed into a wool thread thinner than a hair, and a yarn-covered thread as thick as a thumb. Enameled wire has good insulation effect and waterproof ability. It is widely used in electrical appliances, such as motors, generators, water pumps, electromagnets, electric welding machines, household appliances, wireless communications, speakers, telegraphs, transformers, etc. Enameled wire enamel is a necessary insulating material for the production of enameled wire. Enameled wire enamel requires good adhesion, mechanical strength, insulation performance, heat resista...

AI Technical Summary

Problems solved by technology

Enameled wire enamel is a necessary insulating material for the production of enameled wire. Enameled wire enamel requires good adhesion, mechanical strength, insulation performance, heat resistance, wear resistance, salt spray resistance and harsh environment resistance, etc., but ordinary wire enamel has resistance to It is difficult to meet the requirements of different environments due to problems such as thermal resistance, poor wear resistance, insufficient strength, and heat resistance below 120°C.