Introduction to main components and precautions of insulating paint
Aug 26, 2022
The main component of insulating paint is mainly the base resin, which is also the film-forming material. It is also the main material of insulating paint and the key material to determine the performance of insulating paint. Therefore, according to the classification of base resin, it mainly includes polyester paint, polyurethane paint and polyamide imide paint. The release degree of insulating isolation paper can be selected according to the manufacturer's formula, of course, it can also be customized. It is simple and easy to tear off when peeling, which is a common feature of all isolation papers. The material has a certain thermal conductivity, which can dissipate the heat of the heating body through radiation absorption. Zui eventually keeps the heating body at a relatively stable temperature, so that it can work normally or prolong its service life.
The amount of water added shall not exceed 25% of the paint weight, subject to the recommended amount in practice. Generally, the larger the motor, the greater the viscosity of the paint. In practice, the baking temperature must be above 120 ℃. The larger the motor, the more chaotic the structure, and the longer the baking time; When the baking temperature is improved, the baking time can be appropriately shortened; When the baking temperature is lowered, it is necessary to extend the baking time. Vacuum drying tank shall be kept warm for more than 4 hours. If the baking time of insulating paint is too long or the temperature is too high, the casing may turn yellow or even black, but the excellent flexibility will not affect the insulation quality. It is recommended to use acrylic casing for drying inspection: it is necessary to conduct withstand voltage and insulation resistance tests on the workpieces after they are discharged from the furnace, and the statement that they have reached the factory index request has been dried. If the factory request cannot be reached, the baking temperature shall be improved or the baking time shall be extended. The insulating paint shall not be mixed with other types of insulating paint, or it may become milky white or even deposit.