Amber transparent solid, its pure resin has inherent flame retardancy and low smoke, oxygen index of 47%, burning grade of UL94-V-0, density of 1.28~1.42g/cm3, can be -160～180 Long-term use at °C operating temperature. PEI has strong high temperature stability, even for non-reinforced PEI, it has good toughness and strength, and PEI also has excellent mechanical properties, electrical insulation properties, radiation resistance, high and low temperature resistance, and wear resistance. Performance, flame retardancy, chemical resistance and low shrinkage with good isotropic mechanical properties, and through microwave, glass transition temperature is very high (215 ° C).
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