Characteristics of Silicone rubber
Heat resistance: Silicone rubber than ordinary has much better heat resistance, can be almost always used in 150 degrees without performance change; can be used for 10,000 hours in a continuous period of 200 degrees, and at 350 degrees can be used for some time. Widely used in demanding heat-resistant occasions: Thermos bottle seal ring pressure cooker heat handle.
Cold resistance: The general rubber delayed-20 degrees ~-30 degrees, that is, silicone rubber in-60 degrees ~-70 is still good elasticity, some special formulations of silicone rubber can withstand very low temperature. Low temperature sealing ring.
Weatherability: General rubber is rapidly degraded under the effect of ozone generated by corona discharge, whereas silicone rubber is unaffected by ozone. And for long periods of time in ultraviolet rays and other climatic conditions, the physical property has only slight changes. Sealing materials used outdoors.
Electrical properties: Silicone rubber has a high resistivity and has a stable resistance in a wide range of temperature and frequency. At the same time silicone rubber to high voltage corona discharge and arc discharge has very good resistance. High Voltage Insulator TV sets of other electrical parts.
Conductivity: When adding conductive filler (eg carbon black), silicone rubber has a keyboard conductive contact point.
Thermal conductivity: When adding some heat conduction filler, silicone rubber will have heat conduction heat sink seal pad copier, fax machine heat conduction roller.
Radiation: The resistance to radiation containing phenyl silicone rubber greatly enhances the electrical insulation cable nuclear power plant connector and so on.
Flame Retardant: Silicone rubber itself can be flammable, but adding a small amount of flame retardant, it has the fire and self-extinguishing nature; Because silicone rubber does not contain organic halides, and thus combustion does not smoke or emit toxic gases, various fire strict occasions.
Breathable: Silicone rubber film than ordinary rubber and plastic wax film has better permeability. The other feature is that there is a strong selectivity for different permeability. Gas exchange membrane medical artificial organ.