The color amber brown semipermeable PEI board Name: Chinese the polyetherimide board English name Polyetherimide PEI board are non-crystalline plastic. The polymer is an amorphous high performance engineering plastics manufactured with amorphous PEI (polyetherimide) is made of high-temperature extrusion through the extruder. The PEI plate is the use of the U.S. GE raw materials (trade name Ultem), 1972 U.S. company GE began to study the development of PEI. Edit this paragraph the main features of the PEI board has the best high temperature resistance and dimensional stability, and chemical resistance, flame retardant, electrical resistance, high strength, high rigidity. Not only has high mechanical performance, but also has excellent heat resistance and chemical stability (continuous use temperature of about 170 ° C), and high dimensional stability and creep strength. Having a high strength at high temperature, high rigidity, abrasion resistance and dimensional stability. Do not add any additives have inherent flame resistance and low smoke, oxygen index of 47%, flame rating to UL94-V-0 level. The PEI plates density of 1.28 ~ 1.42g/cm3, the glass transition temperature of 215 ° C, the heat distortion temperature of 198 to 208 ° C at 160 ~ 170 ℃ for long-term use, allowing maximum use of intermittent temperature of 200 ° C. PEI has an excellent mechanical strength, electrical insulation, radiation resistance, high temperature resistance and fatigue resistance and processability; glass fiber, carbon fiber, or other fillers can be modified to enhance the purpose of the thermoplastic unique anti- torsional strength, making it a cheap alternative for small steel cutting parts. Dimensions: plate: thickness x width x length = (10-80) x620x1000mm rods: (5-150) x1000mm grades: Ultem1613 color: brown the semipermeable amber Origin: United States GE _______________________________________________________________________________