PVDF, fully known as polyvinylidene fluoride, is a semi crystalline polymer with high strength and corrosion resistance. It has good chemical stability, heat resistance and mechanical properties. It is widely used in battery adhesive and diaphragm coating technology. PVDF is mainly polymerized by VDF monomer. PVDF downstream applications include coatings, injection molding, lithium battery applications, water treatment membrane and Cecep Solar Energy Co.Ltd(000591) back sector membrane. In 2020, the coating industry ranked first in the downstream application of PVDF with a proportion of 37.05%, and injection molding and lithium battery applications ranked second and third in the downstream application of PVDF with a proportion of 21% and 19.4% respectively; With the development of new energy industry, the proportion of PVDF in lithium battery use has decreased and increased significantly. PVDF is mainly used as cathode material binder in lithium battery.
Why does PVDF as battery adhesive and diaphragm coating rise in price frequently? The price rise of PVDF drives the share prices of relevant enterprises to rise one after another. This report will unveil PVDF to explore why PVDF prices rise frequently? And the development of its technology in China?
The upstream raw materials of zpvdf are mainly R142b, and the head R142b enterprises have begun to expand production plans. In terms of new capacity, most enterprises are in the approval stage, and a few enterprises enter the construction stage, such as Sinochem blue sky
Due to environmental protection supervision, the new R142b production capacity must build bianyou supporting production capacity Therefore, its production expansion cycle is long. In terms of new production capacity Although many enterprises are ready to expand production of R142b But at present, only a few enterprises are under construction For example, Sinochem Lantian 36000 ton r142b/ year project Most enterprises are still in the approval stage Such as Guangdonghectechnologyholdingco.Ltd(600673) etc.
Because lithium battery grade PVDF has higher requirements for product purity and molecular weight, lithium battery grade PVDF is usually produced by copolymerization. At present, overseas enterprises are more mature in the technology of preparing lithium battery grade PVDF
Because lithium battery grade PVDF has higher requirements for product purity and molecular weight Therefore, enterprises will adopt copolymerization modification to improve the performance of products. Compared with homopolymer PVDF, copolymerized PVDF mainly improves product performance by adding other fluorine-containing monomers except VDF in the preparation process. 3 at present, the technology for preparing lithium battery grade PVDF is more mature abroad.
Zpvdf is widely used in the cathode binder of lithium battery, and the utilization rate can reach 90%. With the further expansion of the market scale of power battery cathode materials, the application of PVDF in the field of lithium battery will also be further expanded
Lithium battery application has become the third largest application field of PVDF with a proportion of 19.4% in 2020, which is the downstream application field with the fastest development of PVDF. PVDF is widely used in lithium batteries, such as binder, dispersant, electrolyte, diaphragm coating, diaphragm and so on.
