Enameled wire is the main raw material for products such as motors, electrical appliances and household appliances. Especially in recent years, the electric power industry has achieved sustained and rapid growth. The rapid development of household appliances has brought a broader field to the application of enameled wires. Higher requirements are put forward for enameled wire. For this reason, the product structure adjustment of Enamelled Wire is inevitable, and the matching raw materials (copper, lacquer), enameling process, process equipment and testing methods are also in urgent need of development and research.
Types and uses of enameled wire:
1) Acetal enameled wire
Acetal enameled wire is one of the earliest varieties in the world. It was put on the market by Germany and the United States in 1930. The Soviet Union also developed rapidly. There are two types of polyvinyl formal and polyvinyl acetal. The research was successful in the years. Although the enameled wire has a low temperature resistance level (105°C, 120°C), it is widely used in oil-immersed transformers due to its excellent high-temperature hydrolysis resistance. This feature has been notarized by countries all over the world. my country is still There is a small amount of production, especially the acetal enameled flat wire is used to make transposition wires, which are used in large transformers.
2) Polyester enameled wire
In the 1950s, West Germany first successfully developed a polyester enameled wire paint based on dimethyl terephthalate. Due to its good heat resistance and mechanical strength, the painting process is wide and the price is low. It became the main product dominating the enameled wire market. However, due to the poor thermal shock resistance of polyester enameled wires and easy hydrolysis under high temperature and high humidity conditions, in the late 1970s, polyester enameled wires as a single coating were no longer produced in West Germany and the United States, but in Japan, China and Southeast Asia. Still mass-produced and used. Statistics in 1986 showed that the output of polyester enameled wire in my country accounted for 96.4% of the total output. After 10 years of hard work, the variety of enameled wire has been developed, but compared with developed countries, there is a big gap.
Domestic polyester modification has also done a lot of work, both THEIC modification and imine modification have been researched and developed, but due to the slow adjustment of the enameled wire structure, the current production volume of these two paints is still not large. So far, the voltage drop of modified polyester enameled wire still needs everyone's attention.
3) Polyurethane enameled wire
Polyurethane enameled wire paint was developed by Bayer in Germany in 1937. Because of its direct solderability, high frequency resistance and dyeability, it is widely used in electronics, electrical appliances and other fields. At present, foreign countries are paying great attention to improving the heat resistance of polyurethane enameled wire without affecting its direct welding performance. In Europe, the United States, and Japan, Class F and Class H polyurethane enameled wires have been developed successively. Due to the rapid development of color TVs, the large-length, salt-free pinhole polyurethane enameled wire developed by Japan for color TV FBT has attracted the attention of countries all over the world, and it is still the leader in Japan.
The development of domestic polyurethane enameled wire is slow. Although ordinary polyurethane paint is produced by some factories, due to poor workmanship and surface quality, the paint is mainly imported. Class F polyurethane has also been developed in China, but no production capacity has been formed. Large-length pinhole-free polyurethane paint has also been successfully developed and put on the market, mainly used to make FBT coils for black and white TV sets.
4) Polyesterimide enameled wire
Due to the improvement of heat resistance by modifying polyester with imine, since the 1970s, the amount of polyester imine enameled wire in the world has risen sharply. In Europe and America, this enameled wire has completely replaced single-coated polyester enameled wire. The representative ones in the world are Terebe FH series products from Germany and Isomid series products from the United States. At the same time, the direct-weldable polyester imide enameled wire has been developed successively, which has been widely used as the winding of small motors, which simplifies the welding process and reduces the manufacturing cost of the motor. Some Japanese also use direct-weldable polyester imine paint as the primer of self-adhesive enameled wire for color TV deflection coils, which simplifies the process. Domestic polyester imine paint has successively introduced manufacturing technology from Germany and Italy, and has also successfully developed it by itself. However, due to the instability of raw materials and other reasons, a large number of domestic polyester imine paints used as primers for refrigerant-resistant composite enameled wire are still dependent on imports. Only a small amount of single-coated polyester imine enameled wire is applied with domestic paint, but the voltage instability is still a concern of the manufacturer. The direct solderable polyester imine paint has been successfully developed by the Cable Research Institute.
To buy the enamelled copper wire from a manufacturer online, you need to make sure that the manufacturing company is reliable and reputed. The company should only offer quality products which abide by global and local quality standards. The products must also be thoroughly tested to make them completely safe for use. Xinyu has built its reputation on delivering wire sourcing solutions for its customers. With the largest, most varied inventory of Enameled Wire and Enameled Copper Strip found anywhere. You can click https://www.xinyu-enameledwire.com/ to learn more information.
