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In power transmission and distribution systems, Electricity Cable Compounds are the arteries of energy and information transmission. The stability and reliability of their performance are directly related to the safety and efficiency of the entire system. As the core component of Electricity Cable Compounds, the heat resistance of Electricity Cable Compound materials is the key factor in determining the application scenarios and life of Electricity Cable Compounds. With the development of science and technology and the diversification of application scenarios, the heat resistance level of cable materials is becoming increasingly rich to meet the use needs in different environments.
Limitations of ordinary polyvinyl chloride Electricity Cable Compounds
In early cable manufacturing, ordinary polyvinyl chloride (PVC) was widely used due to its good insulation performance, processability and cost-effectiveness. However, the heat resistance of PVC cables is relatively limited, and its standard operating temperature is usually set at around 70°C. This means that in high temperature environments, PVC cables may soften, deform, or even accelerate thermal aging, thereby affecting the electrical performance and mechanical strength of the cables. Therefore, in application scenarios that need to withstand higher temperatures, PVC cables are unable to cope with the situation.
Breakthrough of modified PVC cables
In order to overcome the heat resistance limitations of ordinary PVC cables, researchers have optimized and upgraded PVC cable materials through modification technology. Modified PVC Electricity Cable Compound materials significantly improve their heat resistance temperature by adding heat-resistant additives, changing molecular structure or adopting blending modification. For example, the heat resistance temperature of some modified PVC cables can be increased to 90°C or even higher, thereby expanding the application range of PVC cables and enabling them to work stably in some medium temperature environments.
The rise of special materials
However, with the continuous advancement of industrial technology and the emergence of extreme application environments, higher requirements are placed on the heat resistance of cable materials. At this time, special materials such as silicone rubber and radiation-crosslinked polyolefins gradually emerged and became the first choice for cable materials in high temperature environments.
Silicone rubber Electricity Cable Compound materials are famous for their excellent heat resistance, cold resistance, aging resistance and electrical insulation properties. Even under extreme high temperature conditions, silicone rubber cables can maintain stable physical and chemical properties and are not easy to age, crack or deform. Therefore, silicone rubber cables are widely used in harsh environments such as aerospace, military industry, metallurgy, and chemical industry with high temperature, high pressure, and strong corrosion.
Radiation-crosslinked polyolefin cable materials use radiation crosslinking technology to crosslink polyolefin molecular chains, thereby significantly improving the heat resistance and mechanical strength of the material. Irradiation cross-linked polyolefin cables can not only maintain stable electrical properties at high temperatures, but also have good oil resistance, chemical corrosion resistance and environmental stress cracking resistance. This makes irradiation cross-linked polyolefin cables widely used in the fields of petroleum, chemical industry, electricity, communications, etc.
The heat resistance of cable materials is the key to adapting to diverse environments and ensuring the safe and stable operation of cables. With the continuous advancement of science and technology and the continuous expansion of application scenarios, the heat resistance level of cable materials will continue to improve and improve. In the future, we have reason to believe that more high-performance and high-reliability cable materials will continue to emerge, providing a more solid guarantee for the safe and efficient operation of power transmission and distribution systems.
