Silicone resin is mainly used as insulating paint (including varnish, enamel, color paint, impregnated paint, etc.) to impregnate h-class motor and transformer coil, as well as to impregnate glass cloth, glass cloth and asbestos cloth to make motor bushing, electrical insulation winding, etc. A large area of mica insulating material can be made by bonding mica with silicone insulating paint, which can be used as the main insulation of high voltage motor.
Silicone long temperature self drying and high temperature curing, in order to accelerate the curing can be added a small amount of diethylene triamine or three ethylene tetramine, paint film gradually began to harden even began to cure, diethylene triamine or three ethylene tetramine only as a drying agent dosage is very little, the best through practice to determine its dosage. High temperature curing generally volatiles the solvent at a low temperature, then dries at 160-180 degrees, and finally cures at 220.
Silicone resin is a highly crosslinked network structure of organic siloxane, usually with methyl trichlorosilane, dimethyl dichlorosilane, phenyl trichlorosilane, diphenyl dichlorosilane or various mixture of methyl phenyl dichlorosilane, in the presence of organic solvents such as toluene, hydrolytic decomposition under low temperature, acid hydrolysate.
At room temperature 20 ~ 25℃, the operating time of curing potting glue at room temperature is generally 20 ~ 30 minutes, and the curing time is 6 ~ 8 hours. When the curing temperature is 50℃, the curing speed is 4 ~ 6 hours; when the curing temperature is 100℃, the curing speed is 1 ~ 2 hours; when the curing temperature is 150℃, the curing speed can be accelerated to 30 ~ 60 minutes. It should be noted that too fast curing will lead to poor automatic foaming effect, so if there is no special curing requirements, please use room temperature curing.