The film capacitor market has good prospects, driving the growth of market demand for films used in capacitors

Capacitor films refer to electrical-grade plastic films used as dielectric materials for film capacitors. They have special requirements for electrical properties, such as high dielectric strength, low loss, high temperature resistance, high crystallinity, etc. Film capacitors made of capacitor films as raw materials have the advantages of stable capacitance, low loss, excellent withstand voltage characteristics, high insulation resistance, good frequency characteristics, and high reliability. They are widely used in electronics, home appliances, communications, electricity, and LED lighting. , new energy and other fields.

Films for capacitors are mostly made of polypropylene and polyester. Among them, the polypropylene used is generally electrical grade homopolymer polypropylene (high isotactic homopolymer PP), which has high purity, excellent heat resistance, insulation, and chemical stability. , impact resistance and other characteristics. The polyester used is generally electrical grade polyethylene terephthalate (electrical grade polyester, PET), which has the characteristics of high dielectric constant, high tensile strength, and good electrical properties. In addition, the materials of capacitor films include electrical grade polystyrene, polycarbonate, polyimide, polyethylene naphthalate, polyphenylene sulfide, etc. These materials are used in small quantities.

In recent years, with the improvement of China’s technological innovation strength, more companies have gradually broken through industrialization barriers. At the same time, the demand for capacitor films in China has continued to grow, and the country has also launched a series of policies to encourage and support the industrial development of capacitor films and their application fields. . Driven by attractive market prospects and encouraging policies, existing companies continue to expand production scale and deploy capacitor film production lines, further driving the increase in China’s capacitor film production capacity. According to the“China Capacitor Film Industry Market Monitoring and Future Development Prospects Research Report 2022-2026” released by the Industrial Research Center, From 2017 to 2021, the production capacity of China’s capacitor film industry increased from 167,000 tons to 205,000 tons.

At present, the domestic capacitor film industry presents a market pattern in which well-known international companies and local companies compete together. International companies such as Germany’s Chuangsipu Group and Japan’s Toray Co., Ltd., due to their early start in the field of capacitor films, strong overall research and development capabilities, strong production capacity of capacitor films, and good product quality, are used in capacitors at home and abroad. The thin film field enjoys a high reputation, has strong overall competitiveness, and is in the first echelon of competition.

Although domestic companies have developed rapidly in the field of capacitor films, due to their reliance on imported production raw materials, production equipment and testing equipment, the overall technology lags behind the above-mentioned international leading companies, Anhui Tongfeng Electronics Co., Ltd. and Aerospace Rainbow UAV Co., Ltd. , Hebei Haiwei Group Electronic Materials Co., Ltd., Nantong Baizheng Electronic New Materials Co., Ltd. and other existing domestic enterprises are in the second echelon of industry competition. In addition, there are some small and medium-sized enterprises in the capacitor film industry. Such enterprises, such as Quanzhou Jiadeli Electronic Materials Co., Ltd. and Jiangmen Runtian Industrial Investment Co., Ltd., have small production capacity and their products are concentrated in the mid-to-low-end field. They are in a competitive position. The third echelon.

Industry researchers said that film capacitors, with their good electrical performance and high reliability, have become indispensable in promoting the upgrading of the above-mentioned industries. of electronic components. In the next few years, with the further development of digitalization and intelligent construction, increased investment in new national infrastructure, Internet of Things, new energy vehicles, 5G terminals, etc., as well as the upgrade of consumer electronics products, the market demand for film capacitors will further develop rapidly. The growth trend will drive the expansion of demand in the capacitor film industry.