PPS is a crystalline polymer with a relatively high melt temperature (285 °C). It can sometimes be difficult to process but it does offer an excellent combination of longterm thermal stability and superior chemical resistance below 200 °C. Its inherent flame resistance and good mechanical properties make this material a popular choice for high-quality moulded parts that are uniform and reproducible.
PPS is widely used in the automotive industry in fuel systems, coolant systems, brake systems and many other under-bonnet applications. Outside of the automotive industry it is used for various components including pumps, impellors and valves, motor relays and some thermostat components.
Although shear strengths achieved in these trials [2] were relatively low, roughening the PPS generally gives a significant increase in bond strengths (Table 2.14).