In modern industrial manufacturing, the selection of materials plays a crucial role in product performance and reliability. PI (Polyimide) protective film is widely used in multiple high-tech industries due to its excellent high temperature resistance, insulation, chemical corrosion resistance, and high mechanical strength. PI protective film plays an irreplaceable role in fields such as new energy ,aerospace and automotive electronics

Safety guarantee of lithium batteries and photovoltaic modules

The rapid development of the new energy industry has led to the continuous expansion of the application of PI protective films in fields such as lithium batteries, super capacitors, and photovoltaic modules. Its high temperature stability, excellent electrical insulation, and chemical corrosion resistance make it the core protective material for new energy products

In the fields of power batteries and energy storage batteries, PI protective films can be used as battery isolation films, external insulation layers, and thermal management protection layers. Due to the large amount of heat generated during the charging and discharging process of lithium batteries, PI protective film can serve as a high-temperature barrier layer to prevent heat diffusion and improve the safety of the battery pack. In addition, the PI protective film can prevent short circuits, improve the service life and stability of the battery.

In photovoltaic power generation systems, PI protective film can be used as the encapsulation layer and electrical insulation layer of solar panels to prevent damage to photovoltaic modules from moisture, ultraviolet radiation, and environmental pollutants, thereby improving the lifespan and power generation efficiency of photovoltaic cells. Due to the long-term exposure of photovoltaic modules to outdoor environments, the weather resistance and UV resistance of PI films are particularly important. The high-performance requirements of materials in the new energy industry make PI protective film an important choice for improving product safety and efficiency, and its application prospects will be even broader in the future.

Ideal materials for high temperature and high pressure environments

The aerospace and automotive electronics industries have extremely high requirements for high temperature resistance, lightweight, and electrical insulation of materials, and PI protective films also have important applications in these fields.

(1) Aerospace applications

In the manufacturing of spacecraft, satellites, and aircraft, PI protective film can be used for wire insulation, electronic equipment protection, high temperature resistant coatings, and insulation layers. Due to the need for spacecraft to operate in extreme temperatures (high or low) and high radiation environments, PI membranes have a wide temperature resistance range, are not easily aged, and can withstand space radiation. Therefore, they are widely used as structural materials and electronic protective layers for space equipment.

(2) Automotive Electronics and Sensor Protection

In smart cars and new energy vehicles, PI protective film can be used for sensor packaging, electronic control unit (ECU) protection, battery module insulation layer, etc. For example, the high-voltage battery system of electric vehicles requires stable insulation materials, and PI film is widely used as a protective layer for high-voltage lines due to its high temperature stability and voltage resistance characteristics. In addition, PI protective film is also required as optical and electronic protective material for camera modules, LiDAR and other sensors in autonomous driving and ADAS (Advanced Driver Assistance Systems) to improve reliability.

The high requirements of the aerospace and automotive electronics industries make PI protective film an indispensable high-performance material in these fields.

Nowadays PI protective film has become a key material in multiple industries such as new energy, aerospace, and automotive electronics due to its excellent physical and chemical properties. With the continuous breakthrough of technology, its application scope will continue to expand, helping the development of high-tech industries.