PPS Sheet / PPS Turning Parts

Polyphenylene Sulfide (PPS) Main Properties of PPS ◆ [Excellent Heat Resistance] Its melting point exceeds 280℃, heat distortion temperature exceeds 260℃, and long-term use temperature is 220-240℃. It degrades in air at 700℃ and retains 40% of its weight in inert gas at 1000℃. Both short-term heat resistance and long-term thermal stability exceed that of all existing engineering plastics. Specially modified varieties can achieve heat distortion temperatures of over 350℃. ◆ [Inherently Flame Retardant] The flame retardancy of polyphenylene sulfide can reach UL94-0 level, and its oxygen index (LOI) is >57%. The chemical structure of polyphenylene sulfide provides excellent flame resistance without the need for added flame retardants. ◆ [Good Mechanical Properties] It has extremely high rigidity, high surface hardness, Rockwell hardness >100HR, tensile strength >170MPa, flexural strength >220MPa, notched impact strength >16MPa, and flexural modulus >3.5×10^4. It also exhibits excellent creep resistance and fatigue resistance. ◆ [Excellent Chemical Resistance] No solvent capable of dissolving polyphenylene sulfide has been found below 200℃, and it shows strong resistance to inorganic acids, bases, and salts. ◆ [Good Dimensional Stability] The molding shrinkage rate is very low, less than 0.0025%, and the absorption rate is less than 0.05%. The linear thermal expansion coefficient is also small. It maintains good dimensional stability under high temperature and high humidity conditions, making it widely used in machinery, chemicals, instruments, aerospace, and marine applications. ◆ [Excellent Electrical Properties] Polyphenylene sulfide retains excellent electrical properties under high temperature, high humidity, and high frequency conditions, with a volume resistivity of 1×10^16Ω.cm, surface resistivity of 1×10^15Ω, and electrical strength >18KV/mm. ◆ [Radiation Resistance] It can withstand radiation levels of Gy1×10^8, making it a new material unmatched by other engineering plastics. It is an ideal material in fields such as electronics, electrical engineering, machinery, instrumentation, aerospace, and military applications, especially for radiation-resistant components. ◆ [Good Processing Performance] PPS resin has low melt viscosity and good flowability, making it easy to wet and contact with glass fibers. Therefore, it is easy to fill with fillers. The glass fiber or inorganic filler reinforced injection-grade granules made from it have extremely high tensile strength, impact resistance, bending strength, and ductility. It can be uniformly formed above its melting point. ◆ [Good Adhesion to Metals and Nonmetals] PPS has very high bonding strength, particularly to glass, aluminum, titanium, and stainless steel, achieving a level 1 adhesion. Its bonding performance to glass is excellent, making it very suitable as a lining material for chemical equipment. Main Application Areas of PPS Electronics and Electrical: Packaging for micro electronic components, connectors, terminals, sockets, coil frames, trimmer capacitors, and fuse bases. Mechanical Instruments: Pump housings, impellers, bearings, gears, pulleys, universal joints, sealing gaskets, flanges, counters, leveling instruments, and flow meter components. Automotive Industry: Temperature sensors, vaporizers, evaporators, vapor pumps, seat bases, and water tank compartments. Household Appliances: Electric fans, microwave oven brackets, clothes dryers, coffee pots, rice cookers, hot air guns, hair curlers, and air conditioning compressors. Military Field: Used in the production of fighter jets, vertical tail fins, combustion chambers, various components for aerospace, aircraft connectors, coil frames, instrument panels, especially major components for stealth fighters and bombers. Also used for parts of nuclear submarines that resist nuclear radiation, supports, helmets, military tents, containers, astronaut supplies, corrosion-resistant and wear-resistant components for warships and submarines, new combat vehicles developed by the U.S. (currently in production) and plastic tanks developed by the UK (in experimental stage), etc. Fibers and Films: Blending PPS fibers with other synthetic fibers can produce high-performance industrial filter cloth and radiation-resistant aerospace fabrics. PPS films are excellent insulation materials that can be used to make capacitors, impedance electronic components, flat coil frames, wire coverings, masks, vaporizer membranes, thermosensitive printing materials, flexible magnetic disks, and photosensitive tapes for electronics photography.