PPS (Polyphenylene Sulfide)
Description

PPS is a semicrystalline, high temperature engineering thermoplastic. It offers an excellent balance of properties, including high temperature resistance, chemical resistance, flowability, dimensional stability and electrical characteristics. It can be molded, extruded, or machined to tight tolerances. In its pure solid form, it may be opaque white to light tan in color.

Features
  • Good Chemical Resistance：Unaffected by alcohols, ketones, chlorinated aliphatic compounds, esters, liquid ammonia...
  • High Temperature Resistance：Resistance to 260°C for short time and used below 200°C for a long time.
  • Electrical Insulation Properties：Both the high-volume resistivity and insulation resistance are maintained even in high-humidity environments.
  • Excellent Dimensional Stability under high temperature and high humidity conditions.
  • High Strength, High Rigidity, Low Degradation, Fatigue Endurance, Creep Resistance.
Applications

filter fabric, papermaking felts, fry pan handles, insulators, film capacitors, specialty membranes, gaskets, packings, bobbins, hard disk drives, electronic housings, sockets, relays, water pump impellers, fuel injection systems…

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Technical Data

20% GF

Item Property Test Method Unit Value
Physical Density ASTM D792 g/cm3 1.49
Water Absorption ASTM D570 % 0.02
Rockwell Hardness ASTM D785 R scale 121
 
Mechanical Tensile Modulus ASTM D638 psi 1.4 × 106
Tensile Strength ASTM D638 psi 16,000
Flexural Modulus ASTM D790 psi 1.3 × 106
Flexural Strength ASTM D790 psi 1,9000
Izod Impact ASTM D256 ft-lb/in 1.3
 
Thermal Heat Deflection Temperature at 264 psi ASTM D648 °C/°F 260 / 500
Flammability UL 94 - V-0
 
Electrical Electrical Volume Resistivity ASTM D257 Ω-cm >1016
Dielectric Constant ASTM D150 1 MHz 3.5
Dissipation Factor ASTM D150 1 MHz 0.001
Dielectric Strength ASTM D149 V/mm 1.38 × 104
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