Views: 262 Author: Jasmine Publish Time: 2023-07-17 Origin: Site
Silicone rubber goods are created with methyl vinyl silicone rubber as the basic gum, different fillers (reinforcing agent, heat resistant agent, modifier, etc.), and manufacturing technologies such as mixing, thin-through, filtering, sulfurating, die pressing, extrusion, bonding, and so on. The following characteristics are seen in silicone rubber products:
High and low temperature resistance: it can be used at temperatures as high as 200°C for extended periods of time while maintaining elasticity at temperatures as low as -60°C;
Electrical insulation property: silicone rubber has good dielectric property, which far outperforms general organic rubber, especially at high temperatures, and dielectric strength is hardly affected by temperatures ranging from 20°C to 200°C.
It has excellent weather resistance, ozone resistance, and UV resistance, and will not fracture outside for an extended period of time. In general, silicone rubber may be used outside for more than 20 years.
Excellent hot compression and long-term deformation.
It provides benefits such as superior processability, ease of assembly, and so on. Methods such as vulcanization molding, calendaring molding, and molding by compressing hot air can be used to create a variety of items.
Silicone rubber products have been widely used in every field of aviation, astronavigation, atomic energy, electrical appliances, electronic instruments, automobiles, machinery, metallurgy, chemicals, health care, and daily life due to their excellent overall performance and good technical-economic effect.
There are two types of silicone rubber: room-temperature vulcanized silicone rubber and high-temperature vulcanized silicone rubber. As a result, one-part room temperature vulcanized silicone rubber, two-component condensation RTV silicone rubber, and two-component molding RTV silicone rubber can be divided into three types based on composition, vulcanization mechanism, and application process.
Each of these three types of room-temperature vulcanized silicone rubber has its own distinct characteristics: The advantages of two-component RTV silicone rubber include not releasing heat when curing, a small shrinking rate, no swelling, no internal stress, curing conducted interior and surface simultaneously, and deep vulcanization. Molding RTV silicone rubber's vulcanizing time is primarily determined by temperature.
Based on its vulcanization character, silicone rubber is classified into two types: heat-vulcanized silicone rubber and room-temperature vulcanized silicone rubber.
It is classified into general types, ultra-low temperature resistant types, ultra-high temperature resistant types, high strength-based types, oil resistant types, medical types, and so on, depending on its properties and applications.
It is classified as methyl vinyl silicone rubber, methyl silicone rubber with phenyl and vinyl groups, fluorosilicone rubber, nitrile silicone rubber, and so on.