Polyimide (PI) Sheet

1. Description
Polyimide (PI) Sheet is a high-performance engineering plastic made from polyimide resin, available in both thermoset and thermoplastic formulations. It is renowned for its exceptional thermal stability, retaining excellent mechanical and physical properties over a remarkably wide temperature range from -269°C to 400°C, and can be used continuously in air from -240°C to 260°C. This material also offers outstanding electrical insulation, good wear resistance, and broad chemical resistance, making it an essential material for demanding applications in aerospace, electronics, semiconductor, and mechanical engineering.
Thickness: 5mm – 100mm (custom available)
Standard sizes: 500×1000mm, 600×1000mm, and other sizes upon request
2.Key Features
Exceptional heat resistance: Withstands continuous use up to 260°C, with short-term capability to 400°C
Excellent thermal stability: Low coefficient of thermal expansion and high creep resistance
Superior electrical insulation: High dielectric strength and stable electrical properties across wide temperature and humidity ranges
Good wear resistance: Low, stable coefficient of friction and low friction wear
Broad chemical resistance: Resists dilute acids, aromatic and aliphatic hydrocarbons, esters, ethers, alcohols, freons, hydraulic fluids, and oils
Inherent flame retardancy: UL94 V-0 rated without additives
Radiation resistance: Resists high-energy radiation, suitable for nuclear and aerospace applications
Low moisture absorption: Maintains dimensional stability in humid environments

3.Technical parameters

4.Applications
Aerospace: Structural components, heat shields, seals, gaskets, bearings
Electronics & Semiconductor: PCB fixtures, coil bobbins, insulating layers, high-temp adhesives, flexible cables
Mechanical Engineering: Gears, bushings, wear plates, mold inserts, fasteners
Power Systems: High-temp electrical insulating components, switchgear parts