PI Material
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DETAILS INTRODUCTION
Polyimide (PI) is a class of high-performance polymers containing imide rings in the main chain. It is widely regarded as one of the most outstanding organic polymer materials in terms of comprehensive performance, playing a key role in numerous high-tech fields.
Core Characteristics
The most notable characteristic of polyimide is its exceptional heat resistance and wide operating temperature range. Its long-term service temperature ranges from -260°C to 330°C, with short-term heat resistance reaching up to 400°C or more. Some grades begin to decompose only at around 500°C.
It also combines excellent mechanical properties. The tensile strength of unfilled polyimide typically exceeds 100 MPa, while biphenyl-type polyimide can reach 400 MPa.
In terms of electrical properties, polyimide offers excellent dielectric performance, high insulation strength, and the highest flame retardancy rating (UL-94). It is classified as a self-extinguishing polymer.
Additionally, polyimide features outstanding radiation resistance, extremely low outgassing in vacuum, and good chemical stability.
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