New polycarbonate and PC/ABS resins are claimed to offer good impact resistance and low-temperature ductility for injection molded instrument panels.
New polycarbonate and PC/ABS resins are claimed to offer good impact resistance and low-temperature ductility for injection molded instrument panels. GE Advanced Materials, Pittsfield, Mass., has unveiled a new series of Xtreme Cycoloy PC/ABS resins with strong heat-aging and hydrolytic stability as well as low odor and low emissions. The PC component reportedly shows no shift of molecular weight in heat-aging tests and less than 10% shift when exposed to heat plus humidity. This new PC/ABS series also has improved flow (21 MFR), which results in up to 10% faster cycles and up to 15% lower injection pressures. High flow and impact also permit thinner walls. A new PC/siloxane copolymer, called Lexan EXL 1414H, has low-temperature ductility down to -40 C, which permits airbag deployment without material fragmentation.