The electrical industry is mainly engaged in the production of power generation, power transmission and distribution, industrial electrical equipment and special electrical equipment and other products. So far, electricity has always been the main energy source for modern industrial development, and it has also played an important role in social and economic development. Since the reform and opening up, power construction has been put into development. According to relevant data, in 2008, my country's power construction investment was as high as more than 500 billion yuan, and power grid construction accounted for more than 50%.
A large number of data show that plastic materials have long become one of the leading materials for the manufacture of electrical products. The electrical industry, which is closely related to plastic materials, mainly produces products such as transformers, wires and cables, high and low voltage electrical appliances and complete sets of switchgear, capacitors, relay protection devices and automatic control systems. Through relevant investigation and research, it is found that the main raw materials of the wire and cable manufacturing industry, in addition to copper, are rubber and plastic materials. Among them, engineering plastics have replaced some metals and inorganic non-metallic materials with their excellent comprehensive properties, and are widely used in a large number of products.
Unlike general-purpose plastics, engineering plastics are plastic materials that can be used as engineering materials and replace metal to manufacture machine parts. Compared with conventional general-purpose plastics, it can meet higher requirements in terms of mechanical properties, durability, corrosion resistance, heat resistance, etc., and has stronger plasticity. It can also be used for a long time in harsh chemical and physical environments. It can be used in place of some metal materials.
At present, engineering plastics have long been widely used in electrical and electronic, automobile manufacturing, construction, machinery and equipment manufacturing, aerospace and other industries. It has become an industry development trend to replace steel with plastic and replace wood with plastic. Therefore, although engineering plastics have high cost and low output, they have become the fastest growing field in the plastics industry in the world today. Its development not only plays an important supporting role for the national pillar industry and modern high-tech industry, but also promotes the transformation of traditional industries and the adjustment of product structure.
There is a close relationship between the plastics industry and the electrical appliance manufacturing industry. The rapid development of the plastics industry has already formed a complete industrial system. The development of my country's plastics industry has strongly supported the rapid and sustainable development of the electrical appliance manufacturing industry. The development and research and development of new engineering plastics have provided strong support for the upgrading of various electrical products and the technological innovation of the industry.