Cardanol modified waterborne insulating varnish and preparation method thereof

Abstract

The invention discloses cardanol modified waterborne insulating varnish and a preparation method thereof. The cardanol modified waterborne insulating varnish is prepared from raw materials in parts by weight as follows: 14-20 parts of cardanol, 17-21 parts of isophthalic acid, 9-15 parts of trimethylolpropane, 12-18 parts of neopentyl glycol, 7-9 parts of pyromellitic dianhydride, 7-9 parts of maleic anhydride, 12-16 parts of methylated amino resin, 7-10 parts of dimethylethanolamine, 16-17 parts of 2-butoxyethanol and 0.1-1 part of a water-based dispersing agent. Use of toluene, dimethylbenzene, styrene and solvent oil which are taken as a solvent is avoided, the production cost is reduced, environmental pollution is reduced, health of workers is guaranteed, and the raw materials such as cardanol and the like are widely sourced, and the waterborne insulating varnish has the advantages of low cost and simple production technology; meanwhile, water is taken as the solvent, production is low-carbon, and the waterborne insulating varnish has the advantages that the varnish is energy-saving, environmentally friendly and safe to transport, has low risk and has no harm to a human body.

Description

technical field [0001] The invention belongs to the technical field of insulating varnish, and relates to a cardanol-modified water-based insulating varnish and a preparation method thereof. Background technique [0002] Insulating varnish is generally used to impregnate motors and electrical coils to fill the gaps and micropores in the insulation system, and to form a continuous paint film on the surface of the impregnated object, and to bond the coils into a solid whole, effectively improving the integrity of the insulation system. performance, thermal conductivity, moisture resistance, dielectric strength and mechanical strength; however, the existing insulating varnishes are made with toluene, xylene, styrene, and mineral spirits as solvents, so the cost of the insulating varnish made is relatively high. The smell is strong during use, which will damage the health of workers and cause serious environmental pollution; and the insulating varnish belongs to dangerous goods,...

AI Technical Summary

Problems solved by technology

[0002] Insulating varnish is generally used to impregnate motors and electrical coils to fill the gaps and micropores in the insulation system, and to form a continuous paint film on the surface of the impregnated object, and to bond the coils into a solid whole, effectively improving the integrity of the insulation system. performance, thermal conductivity, moisture resistance, dielectric strength and mechanical strength; however, the existing insulating varnishes are made with toluene, xylene, styrene, and mineral spirits as solvents, so the cost of the insulating varnish made is relatively high. The smell is strong when used, which will cause certain damage to the health of the operators, and the pollution to the environment is relatively serious; and the insulating varnish is a dangerous product, and the requirements for transportation and use environment are relatively strict.