Although the wire and cable industry is only a supporting industry, it occupies a quarter of the output value of China's electrical industry, and is the basis of various industries. It involves power, construction, communications, civil, manufacturing, petrochemical and other industries, and all departments of the national economy are closely related, wire and cable is also known as the "artery" and "nerve" of the national economy, is the transmission of electrical energy, transmission of information and manufacturing of various motors, instruments, meters, electromagnetic energy conversion indispensable basic equipment. It is a necessary basic product in the future electrification and information society, and the demand is wide.


Wire and cable in the field of new energy vehicles and rail locomotives belong to special wire and cable, which will encounter various harsh natural environments in the process of use. Including large temperature difference between day and night, sunlight, weathering, moisture, acid rain, freezing and seawater, these natural environments will seriously affect the life and performance of wire and cable, and even reduce the reliability and safety of wire and cable, resulting in property damage and personal injury. Therefore, generally on the basis of ensuring excellent insulation performance, it has excellent waterproof, acid and alkali resistance, aging resistance, oil resistance, weather resistance, low smoke flame retardant, environmental protection and harmless performance. And due to the use of flexible, there will inevitably be artificial bending, distortion, drag and other phenomena, easy to cause mechanical damage, but also require the cable to have excellent softness, flexibility, wear resistance, mechanical properties.


Because the comprehensive performance of silicone rubber is very excellent, it is widely used in new energy vehicles and rail locomotives wire and cable, especially for wire and cable with high resistance to high and low temperatures. However, the general performance of silicone rubber materials can not fully meet the requirements of the use of new energy cables, can not guarantee the safe operation and life of new energy cables, mainly reflected in the long-term aging resistance of silicone rubber, oil resistance, solvent resistance, water resistance breakdown voltage, flame retardant, mechanical properties and other important performance of some defects. It is necessary to improve and balance the long-term aging resistance, flame retardant, mechanical properties (especially tear resistance), acid and alkali resistance, oil resistance, voltage resistance, impact resistance, solvent resistance and other properties of silicone rubber through some technical means to meet industry requirements.