Polyphenylene Sulfide

Polyphenylene Sulfide (PPS); a Semi-Crystalline, High-Temperature Engineering Thermoplastic


Polyphenylene sulfide (PPS) is an organic polymer consisting of aromatic rings linked by sulfides. It is a high-performance engineering thermoplastic with high temperature. Polyphenylene sulfide has a semi-crystalline structure with a unique combination of properties. PPS is a semi-crystalline, high-temperature engineering thermoplastic. It is a rigid and opaque polymer and consists of para-phenylene units alternating with sulfide linkages. PPS resin is a crystalline heat resistant polymer that has a simple chemical structure made from benzene and sulfur.

Polyphenylene sulfide is an engineering thermoplastic which combines high dimensional stability, excellent mechanical properties, and broad chemical resistance. PPS is an excellent alternative to metals and thermosets for use in hostile chemical environments. It is a thermoplastic polymer with low moisture absorption, high thermal stability and a melting point of 280°C. PPS is a rigid and opaque polymer with a high melting point. This combination makes it ideal for precise tolerance machined components and a variety of demanding applications.

It has a wide operating temperature range and has good resistance to corrosive chemicals such as petrol, ethylene glycol, and engine exhaust gases. In addition to these properties, PPS demonstrates excellent resistance to wear and abrasion. This makes it suitable for use in a variety of industries, including automotive and electronics manufacturing. This is primarily due to its low coefficient of linear thermal expansion. It is a tough material that can be processed with ease, making it suitable for both injection molding and compression molding.

Polyphenylene Sulfide (PPS) can be combined with a wide range of fillers, allowing for a number of grade options such as glass or mineral filled, anti-static, conductive, and FDA compliant grades. PPS is used in filter fabric for coal boilers, electrical insulation, papermaking felts, film capacitors, packings, gaskets, and specialty membranes.

Because of its low viscosity, PPS can be molded with high loading of fillers and reinforcements, which in turn help increase surface properties, strength, electrical properties, dimensional stability, and the overall cost.

Polyphenylene sulfide (PPS) is the precursor to a conductive polymer of the semi-flexible rod polymer family. One of the most “metal-like” plastics available, is a frontrunner for consideration for harsh-environment applications owing to its exceptional chemical resistance. Thus, there is an increasing demand for PPS across the globe. In March 2019, DIC Corp. announced to build a new production line of PPS compounds at its DIC Imaging Products USA, LLC facility in Oak Creek, Wisconsin to meet the increasing demand for PPS compounds in North America.