good mechanical properties, high creep resistance, high temperature resistance, friction resistance, flame resistance Product Description

Characteristic PPS-hGR20/30/40/50/60 (natural color) and PPS-hGR21/31/41/51/61 (black) is glass fiber reinforced based on the PPS resin. It owns good mechanical properties, high creep resistance, high temperature resistance, friction resistance, flame resistance, chemical resistance, excellent electrical insulation properties, arc resistance, low mold shrinkage, easy processing good dimensional stability, and radiation resistance. Applications It can be widely used to make elements where high temperature resistance, electrical insulation are all important in aviation; Anticorrosion valves and electrical insulating parts; Precise plugs, outer shells and high temperature resistant contactors; Electric parts, terminal and switch; Carburetor, distributor, igniter, slide block, gears, thermocouple, piston rings with requirement of high temperature resistance and precision dimension; Hot-air tube, crisping iron, hair curler, coffeepot. Properties Item Unit HGR20/21 HGR30/31 HGR40/41 HGR50/51 HGR60/61 Test Standard Density g/cm3 1.51 1.51 1.7 1.68 1.78 GB/T 1033-1986 Mold Shrinkage (Flow/Transverse) % 0.25/0.75 0.25/0.75 0.25/0.75 0.25/0.75 0.25/0.75 GB/T 15585-1995 Compressive Strength MPa 137 137 130 135 137 GB/T 1041-1992 Rockwell Hardness HR 100 100 111 111 112 GB/T 9342-1988 Tensile Strength MPa 120 120 180 176 162 GB/T 1040-1992 Elongation at break % 1.80 1.80 1.80 1.90 1.70 GB/T 1040-1992 Flexural Modulus MPa 1.15× 104 1.15× 104 1.36× 104 1.63× 104 1.94× 104 GB/T 9341-2000 Flexural Strength MPa 172 172 272 285 250 GB/T 9341-2000 Izod Impact Strength (notched) KJ/m2 10.8 10.8 14 13 12.2 GB/T 1843-1996 Volume Resistivity Ω. M 1.4× 1015 1.4× 1015 5× 1014 3.4× 1014 2.1× 1014 GB/T 1410-1989 Surface Resistivity Ω 6.9× 1015 6.9× 1015 5× 1014 2.2× 1015 5.5× 1015 GB/T 1410-1989 Dielectric Constant (1MHz) 4 4 4 4 / GB/T 1409-1988 Dielectric Strength KV/mm 17.2 17.2 17 17.2 17 GB/T 1408.1-1999 Melting Point OC 281 281 282 282 282 GB/T 4608-1984 HDT (1.8MPa) OC 264 264 265 267 267 GB/T 1634.2-2004 Flammability (Vertical) Grade FV-0 FV-0 FV-0 FV-0 FV-0 GB/T 2408-1996 Remark: The statistics above are typical value, not be proved as receiving inspection standard. Processing Conditions Suitable for injection molding. PPS is highly crystallization polymer. Therefore, in molding process, stress concentration, which brought on by rotation angle and changes of wall thickness, should be considered. 1. Pre Drying: Temperature: 110~140oC Time: 3~5hr 1.1 metal inserts should be preheated. Temperature: 130~140oC Time: 1hr (constant temperature) 1.2 natural colored compounds should be pre-dried in the same condition in order to get the even colour after molding. 2. Injection: Mold: 100~150oC Cylinder: Zone 1: 270~290oC Zone 2: 300~320oC Zone 3: 300~320oC Nozzle: 290~320oC Injection pressure: 50~100MPa Injection speed: Medium speed. In order to get a nice-quality appearance, it allows a high speed. Yet please avoid some defects like warp and scorch. Back pressure: 0.1~1.0MPa Screw speed: 40~100 r/min Injection time: Depend on the sizes of articles 3. Post processing: Depend on the sizes of articles Processing temperature: 160~180oC Processing time: 2~24hr (depends on the content of glass fiber)

Filled & Reinforced PPS Compounds