The separator is a microporous and porous film, made of PP and PE as the main material, and is placed between the positive and negative electrodes inside the battery. Main function: Isolate the positive and negative plates, prevent the internal cathode and anode of the battery from short-circuiting, allow ions to pass through, and have the function of retaining the electrolyte. In fact, in addition to pp and PE isolation films, there is also a PET isolation film. So, what is the difference between PE isolation film and PET isolation film?
PE is a polymer organic compound with a simple structure, and is a widely used polymer material in the world today. PE isolation film uses special polyethylene plastic film as the base material, and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to the density. The advantage of PE isolation film is that the protected product is not polluted, corroded, scratched during production, transportation, storage and use, and protects the original smooth and shiny surface, thereby improving product quality and market competitiveness.
PET isolation film is also known as high temperature resistant polyester film. It has excellent physical properties, chemical properties, dimensional stability, transparency, and recyclability, and can be widely used in magnetic recording, photosensitive materials, electronics, electrical insulation, industrial films, packaging decoration and other fields.