A kind of insulating varnish for impregnating micromotor

Abstract

The invention discloses insulation paint for impregnating a micromotor. The insulation paint consists of the following raw materials according to a formula: amino modified epoxy resin, nano barium oxide, nano titania, nano barium carbonate, a diluent, polyvinylpyrrolidone, organo-siloxane, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and ethyl acetate. The insulation paint disclosed by the invention is free of extra addition of a curing agent, strong in permeability, uniform in paint hanging amount and capable of effectively permeating to all coil windings of the micromotor; the added nano-scale metal oxides can form a layer of paint film with ceramic-like performance on the surfaces of the windings of the micromotor, and the paint film is strong in adhesion force and resistant to high temperature and can not crack when the motor runs at a high speed for a long time; the diluent has little smell and no irritation and is favorable for improving the air environment of an operation workshop.

Description

technical field [0001] The invention relates to an insulating varnish, in particular to an insulating varnish used for impregnating a micromotor. Background technique [0002] Insulating varnish is a coating with excellent electrical insulation properties. It has good electrical insulation properties, thermal properties, mechanical properties and chemical properties. With the development of science and technology, people gradually realize that insulating material is an indispensable material for electrical equipment, and its quality plays a key role in the economic and technical indicators and operating life of electrical equipment, and it is compared to "motor heart". [0003] Impregnated insulating varnish is a kind of insulating varnish, which is mainly used to impregnate the coils of motors and electrical appliances to fill the gaps and micropores, and after curing, it can form a continuous and flat paint film on the surface of the impregnated object, and make it sticky...

AI Technical Summary

Problems solved by technology

However, this process has the following disadvantages: 1) ordinary impregnated insulating varnish has high viscosity and relatively poor fluidity, resulting in weak penetration, which affects the impregnation effect; 2) weak penetration, resulting in impregnation The amount of paint on the workpiece is relatively small, the adhesion of the paint film is reduced, and the workpiece such as the micro-motor is heated after a long period of use in the later period, and the insulating coating is easy to crack and damage; 3) Styrene is generally used as a thinner in insulating paint, and styrene is volatile Strong, strong smell, and has a certain degree of irritation, so it will emit unpleasant toxic gases during the process of dipping and baking, which will pollute the operators and the surrounding environment to a certain extent.

Images