With the continuous advancement of technology, a new type of PVDF film has been developed and came out. Compared with PVF film, its UV resistance, chemical resistance, flame retardancy, wind and sand resistance, recyclability and other properties are more excellent. Compete for the market.
PVDF film is a film material made of polyvinylidene fluoride as a raw material, which belongs to a kind of fluoropolymer film. PVDF film has excellent mechanical strength, abrasion resistance, impact resistance, creep resistance, penetration resistance, chemical resistance, thermal stability, flame retardancy, mold resistance, weather resistance and other characteristics. It is fluorine-containing Among the polymer films, it ranks among the top excellent products in terms of comprehensive performance.
According to the application, PVDF films can be divided into three categories: PVDF films for batteries, PVDF films for water treatment, and PVDF films for construction. PVDF films for batteries can be applied to photovoltaic cell backplanes, new energy vehicle batteries, and fuel cells; PVDF films for water treatment can be applied to sewage treatment and seawater desalination; PVDF films for construction can be applied to glass, curtain walls, exterior walls, and Billboard field. Among them, the photovoltaic cell backplane is an important application field of PVDF film.
In order to ensure the service life of photovoltaic cells, it is necessary to use functional thin film products to encapsulate them. Such thin film products need to have excellent wear resistance, flame retardancy, UV resistance, chemical resistance, and aging resistance. Use PVF film. With the continuous advancement of technology, a new type of PVDF film has been developed and came out. Compared with PVF film, its UV resistance, chemical resistance, flame retardancy, wind and sand resistance, recyclability and other properties are more excellent. Compete for the market. At this stage, PVDF film and PVF film together have become the two mainstream products for photovoltaic cell backsheet films.
According to the data released by the National Energy Administration of China, in 2019, China's new installed photovoltaic power generation capacity was 30.11 million kilowatts, and the cumulative installed capacity of photovoltaic power generation reached 204.3 million kilowatts. China's photovoltaic market continues to expand, providing sufficient space for the development of the PVDF film industry. . In 2019, the scale of China's PVDF film market is about 5.31 billion yuan, maintaining a continuous growth trend.
Before 2013, due to technical limitations, China did not have the capacity to produce PVDF films. The market was mainly monopolized by companies in the United States, France, South Korea and other countries. The high prices of PVDF film products and the slow supply speed severely hindered the development of China's photovoltaic industry. Driven by the rapid rise of China's photovoltaic industry, the number of companies entering the PVDF film industry layout in China has begun to increase, and a number of outstanding companies have emerged, which has made the localization rate of China's PVDF film market continue to increase.
Representative companies in China's PVDF film industry mainly include HZFM Fluorine Membrane Material Technology Group, ZJGR Advanced Material Technology Group, HBHT New Material Technology Group, SDDY Fluorine Material Group Group, etc.
In order to improve the overall performance of products and reduce production costs, China PVDF Film Technology Company has continuously adjusted product formulas and film structures to meet the increasing requirements of downstream industries. The R&D and technical barriers for industry entry are still increasing.