Polyimide PI gasket

Polyimide PI has high and low temperature resistance (-269~400℃), high friction resistance, self-lubrication, high strength, high insulation, radiation resistance, corrosion resistance, Low thermal expansion coefficient, organic solvent resistance, self-extinguishing, non-toxic and other comprehensive properties. The long-term working temperature of some types of PI is above 350℃, and the short-term working temperature can reach 450℃. Is the engineering plastic with the best temperature resistance among engineering plastics at present. Its comprehensive performance is unmatched by other special engineering plastics, and it is praised as "an expert in solving problems" by the world. It is widely used in high-tech fields such as aviation, aerospace, machinery, electricity, atomic energy, microelectronics, thin film and liquid crystal display.


Performance Table

       

Product nameNJSSPI-1003NJSSPI-1006NJSSPI-1007NJSSPI-1008
ProjectUnits Test data
Densityg/cm3 1.451.401.401.30
Heat distortion temperature℃ 380260300220
Coefficient of thermal expansion/℃ 5×10-52×10-55×10-55×10-5
Tensile strengthMPa 62.6495.00127.00110.00
Elongation at break4.917.006.2010.00
Bending strengthMPa149.00150.0094.00125.00
Bending modulusGPa 3.003.002.342.50
Compressive strength MPa136.50120.00162.00100.00
Coefficient of friction-0.25-0.350.25-0.350.25-0.350.25-0.35
Dielectric strengthKV/mm400.00134.00180.00
Dielectric constant-2.8-3.43.0-3.22.8-3.43.0
Surface resistivityΩ1015  1014 2.6×10151015
Volume resistivityΩ.cm1016 1016 6.7×10151016
Hardness (shore D)HD85858585
Notched impact strengthkJ/m219.0025.0012.0020.00
Water absorption≤0.3≤0.3≤0.3≤0.3
Low temperature resistance-248.00 -248.00 -248.00 -248.00 
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