Polyphenylene sulfide (PPS) is an organic polymer consisting of aromatic rings linked with sulfides. Synthetic fiber and textiles derived from this polymer are known to resist chemical and thermal attack. Polyphenylene sulfides exhibit outstanding chemical resistance, thermal stability, dimensionally stability, and fire resistance. PPS's extreme inertness toward organic solvents, and inorganic salts and bases make for outstanding performance as a corrosion-resistant coating suitable for contact with foods. PROCESS PPS can be polymerized by the polycondensation reaction of para-dichlorobenzene (p-DCB) and sodium sulfide (Na2S) or sodium hydro sulfide (NaSH) in a polar solvent under elevated temperature and pressure conditions. PPS is created by combining various elements, including a dehydration reaction, sodium chloride removal reaction, exothermic reaction, and high temperature pressurization reaction. ADVANTAGES 1. Excellent chemical resistance 2. High temperature performance 3. High modulus when reinforced PROPERTIES Rigid, opaque non-burning continuous use at 250'C, good chemical resistance, good electrical insulator, moisture resistant, rarely used unfilled. Good tensile strength and flexural modulus together with good electrical properties. Glass fibre filled PPS gives good heat distortion whereas carbon fibre filled PPS does this even better with dimensional stability and rigidity. PPS, when PTFE lubricated, will give good wear and low coefficient of friction. TYPICAL APPLICATIONS Fuel injectors Pumps Bearings Manifolds V-packing gaskets Pistons Gears Areas of application include the following • PPS compounds are a popular alternative to metal for gas water boilers, as it can be used instead of metal and ceramics • PPS is a high performance polymer used to replace thermosets. • Automotive OEM platforms as well as advanced, lightweight composite components used by aircraft manufacturers. • In fuel systems, transmission components • In the electrical/electronic field in sensors, connectors, plugs, switches, sockets, transformers, bobbins and circuit boards; in structural and non structural aircraft composite components; • In fluid handing in enhanced oil and gas recovery, pumps and valves and potable water valves and fittings • In the industrial/consumer industry in appliances, electronics, technical fibers and fabrics for filtration and conveyor system components. Demand for PPS resins has grown at a healthy and promising rate since the 2008–09 global recessions. More so, world automotive production is back on track and the push for heavier loadings of PPS in automotive parts, newer applications, and environmental requirements has increased PPS demand on a larger scale. Overall, global PPS demand is expected to continue to grow at a faster pace than global GDP. In fact, during 2014–19, world PPS resin consumption will grow at an average annual rate of 6–7%. Consumption growth will continue to shift toward China, where demand in electrical and electronics applications, as well as automotive applications and filter bags is expected to rise sharply.