What are the core outstanding properties of polyimide film
1. Ultra wide temperature range thermal stability (the most iconic performance)
Long term continuous use temperature: -269 ℃~220~240 ℃
Can withstand high temperatures of 300-400 ℃ for a short period of time; No obvious melting point, does not melt at high temperatures; Equipped with self extinguishing and flame-retardant properties, it automatically stops burning when the fire source i
1. Ultra wide temperature range thermal stability (the most iconic performance)
Long term continuous use temperature: -269 ℃~220~240 ℃
Can withstand high temperatures of 300-400 ℃ for a short period of time; No obvious melting point, does not melt at high temperatures; Equipped with self extinguishing and flame-retardant properties, it automatically stops burning when the fire source is removed.
Not prone to brittle cracking and softening deformation in high and low temperature environments.
2. Excellent flexibility and resistance to repeated bending mechanical properties
High strength, high toughness, thin specification film can withstand multiple bending without breaking;
Low thermal expansion coefficient, stable size in high temperature environment, far lower degree of warping and deformation than general films such as PET, suitable for precision electronics and flexible circuits.
3. Stable electrical insulation performance under wide temperature and high frequency conditions
High breakdown voltage, small changes in dielectric constant and dielectric loss with temperature and frequency;
High and low temperature, alternating working conditions still maintain reliable insulation, suitable for motors, new energy, and FPC flexible circuit boards.
4. Good chemical stability
Insoluble in the vast majority of organic solvents, mineral oils, weak acids, and weak bases;
Excellent radiation resistance, with minimal performance degradation after exposure to gamma rays and high-energy radiation.
Limitations: Hydrolysis may occur in high temperature and strong alkaline environments.
5. Outstanding creep resistance and aging resistance
Slow deformation under continuous stress conditions; Compared to most engineering plastics, the long-term high-temperature service life is longer.
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