With the continuous advancement of technology, the functional and performance requirements of electronic devices are also increasing. In this context, protective film, as an important component of electronic devices, has gradually become a key material for ensuring device performance and extending service life. Especially PI protective film (polyimide protective film), with its excellent high temperature resistance, electrical insulation, chemical resistance, and mechanical strength, is widely used in various high-tech fields. The multifunctionality of PI protective film provides strong support for various industries.

In the rapid development of new energy vehicles, the reliability and safety of automotive electronics have become key elements, especially the protection of battery management systems (BMS), drive motors, onboard batteries, and electrical components. Due to the large amount of heat generated during the charging and discharging process of new energy vehicle batteries, efficient heat dissipation systems and high-temperature resistant materials are required to ensure the safe operation of the batteries. The application of PI protective film in automotive electronics can effectively address these challenges and ensure the stability of batteries and circuit systems in high-temperature environments.

PI protective film is the key components to protect battery packs, charging interfaces, and battery management systems. Battery systems are typically exposed to high temperature and high voltage environments, and PI membranes can effectively isolate electrical components, avoiding equipment failures caused by electrical short circuits or overloads. In addition, PI film can effectively prevent gas leakage or chemical reactions inside the battery from corroding the battery casing, improving the safety of the battery. The mechanical strength of PI film can also provide additional physical protection to prevent damage to the battery system during collisions or vibrations.

With the further development of electric vehicle technology, PI protective film is also applied to the packaging and protection of electrical systems and electronic equipment in new energy vehicles. The multifunctionality of PI film provides reliable protection for the automotive electronics field, ensuring stable operation of vehicles in various complex working environments.

The aerospace industry imposes extremely stringent requirements on materials, demanding not only exceptional mechanical strength and high-temperature resistance but also the ability to maintain stable performance under extreme conditions. Polyimide (PI) protective film, with its outstanding thermal stability, radiation resistance, chemical stability, and mechanical strength, has become one of the widely used materials in the aerospace field.

In aerospace applications, PI protective films are commonly used to safeguard critical components such as electronic equipment on spacecraft, satellite circuits, and solar panels. Due to the extreme temperature fluctuations encountered by spacecraft in space environments, the high temperature resistance of PI films effectively ensures stable operation of equipment in alternating hot and cold conditions. These films can withstand temperature variations, preventing malfunctions caused by sudden thermal shifts. Additionally, their radiation resistance and chemical stability effectively counteract the corrosive effects of space radiation and chemical substances on aerospace equipment, thereby extending the service life of the devices.

The application of PI protective film is not limited to consumer electronics and industrial fields, and its application in medical equipment and biotechnology has also received widespread attention. Modern medical equipment typically requires stable operation in harsh environments, which places high demands on the performance of materials. For example, in medical imaging equipment, portable diagnostic instruments, and implantable medical devices, the high temperature resistance, chemical stability, and PI protective films make them an ideal choice.

In medical devices, PI protective film is commonly used to protect sensors, displays, and circuit boards from external physical damage and chemical erosion. The chemical stability of PI film enables it to resist common disinfectants, drugs, and moisture in medical environments, ensuring the reliability of the equipment during long-term use.  It can effectively avoid adverse reactions to the human body and provide patients with a safe treatment experience.

With the continuous advancement of medical technology, the application of PI protective film in medical devices will become more widespread, especially in portable diagnostic devices, intelligent health monitoring devices, and high-precision medical instruments.