Details
Material hierarchy: Polymer - Engineering Thermoplastic
Polyphenylene sulfide is abbreviated PPS. This resin is characterized by excellent high-temperature performance, inherent flame retardance, and good chemical resistance. The crystalline structure of PPS is best developed at high mold temperatures (250–300°F).
Most PPS is sold in the form of filled and reinforced compounds for injection molding. Because of its heat and flame resistance, the material has been used to replace thermoset phenolics in electrical/electronics applications. PPS will withstand contact with metals at temperatures up to 500°F, and in the electrical/electronics market, its biggest use is in molding connectors and sockets. Because it can withstand vapor-phase soldering temperatures, the material is gaining wide use in molding surface-mounted components, circuit boards, and so on.
Another major application for PPS is in industrial pump housing, valves, and downhole parts for the oil drilling industry. PPS is used to mold appliance parts that must withstand high temperatures; applications include heaters, dryers, microwave ovens, and irons.
Its heat and chemical resistance have led to the use of PPS in automotive under-the-hood components, electronics, and lighting systems, as well as medical uses.