PPS/德国雷曼福斯/1301-8331高刚性阻燃级耐低温 (CAS No.None)

Product Name:Polyphenylene Sulfide (PPS)

English Name:Polyphenylene Sulfide (PPS)

CAS No.:25212-74-8

Aliases:PPS, Polyphenylene Sulfide, Poly(p-phenylene sulfide)

Molecular Formula:(C6H4S)n

Physical Properties:White powder or granules, highly crystalline, hard and brittle. Pure PPS has a relative density of about 1.3, which increases after modification; water absorption is extremely low, about 0.03%. It has good flame retardancy with an oxygen index of over 44%. It exhibits high rigidity: flexural modulus is about 3.8 GPa for pure PPS and can reach 12.6 GPa after inorganic filling modification. Abrasion resistance is good with a wear loss of about 0.04 g per 1000 revolutions, and it has self-lubricating properties. Thermal performance is excellent: short-term resistance to 260°C, long-term service temperature 200–240°C. Electrical properties are outstanding with low dielectric constant and dielectric loss, and good arc resistance. Chemical resistance is excellent, second only to PTFE; it also resists radiation, oil and chemicals, and has good dimensional stability. This grade also features high rigidity, flame retardancy and good low-temperature resistance.

Uses:Used in automotive functional parts such as igniters, heaters, thermostats, lamp sockets and bearings, replacing metals for exhaust gas recirculation valves and water pump impellers. In mechanical industry, it is used for wear-resistant structural parts including pump bodies, valves, bearings, piston rings and gears. It is also applied in special industrial dust removal equipment and motor insulation materials.

Technical Specifications:

Relative density: about 1.3 for pure PPS, increases after modification

Water absorption: about 0.03%

Oxygen index: ≥44%

Flexural modulus: about 3.8 GPa for pure PPS, up to 12.6 GPa after inorganic filling modification

Service temperature: 260°C short-term, 200–240°C long-term, with good low-temperature resistance