Polyimide Film (Polyimide Film) is a high temperature, high performance engineering plastic film material. It has good mechanical properties, chemical stability and electrical insulation properties, so it is widely used in electronics, aerospace, optoelectronics, automotive and other fields.

The preparation process of polyimide film usually includes the steps of polymerisation, membraneisation and post-treatment. Among them, polymerisation is the process of forming polyimide chains by reacting polyimide monomers at high temperatures. Filmisation is the process of preparing the polymerised polyimide substance into the desired film form by solvent or melt method. Post-processing is to further improve the properties of the polyimide film by heat treatment, stretching, etc.

The main characteristics of polyimide film are as follows:

1. High temperature performance: polyimide film can work stably for a long time in a high temperature environment, and its short-term use temperature can reach more than 300℃. Therefore, it is widely used in electronic products in the high temperature electrical insulation materials.

2. Mechanical properties: Polyimide film has high strength and stiffness, and can maintain a good physical form, not easy to deformation or rupture. This makes it widely used as a structural and thermal insulation material in the aerospace field.

3. Chemical stability: Polyimide film is resistant to most chemicals and has good corrosion resistance. This makes it widely used as diaphragm and separation membrane materials in the chemical industry.

4. Electrical insulation performance: polyimide film has high electrical insulation performance, can effectively isolate the current, prevent electrical equipment from short-circuit or leakage and other faults. Therefore, it is widely used in the field of electronic insulating materials.

5. Transparency: polyimide film has good transparency, can conduct light, so it is widely used in the field of optoelectronics optical materials.

In short, polyimide film with its excellent performance in a number of fields are widely used, for the development of modern science and technology has made an important contribution. With the continuous progress of science and technology, the performance of polyimide film will continue to improve, providing better solutions for various fields of application.