The invention belongs to the technical field of
silicone rubber, and discloses a tracking-resistant
silicone rubber, and a preparation method and application thereof, the tracking-resistant
silicone rubber is mainly prepared from the following raw materials:
polysilazane, a
platinum complex, basic
silicone rubber, white
carbon black,
silicone oil and a vulcanizing agent. According to the invention, a small amount of
polysilazane and
platinum complex is added, and the
structural formula of
polysilazane is as follows: (R1R2Si-NH) x (R3R4Si-NH) y, x and y are both integers of 0-300, and x and y are not 0 at the same time; R1, R2, R3 and R4 independently represent any one of H, CH3 and CmH2m + 1 respectively, and m is an integer between 1-7; and when the
mass ratio of
platinum atoms in the total formula raw materials is 5-15 ppm, the tracking resistance of the obtained
silicone rubber finished product can reach 1A 4.5 grade, the
system compatibility is good, the
mechanical property is excellent, and the defect of poor
mechanical property of the current tracking-resistant
silicone rubber is overcome. The preparation method is simple, raw materials are easy to obtain, the application prospect is good, and thetracking-resistant silicone rubber is suitable for being applied to the field of high-
voltage insulation.