PPS Polyplastics 1140A1
PPS Polyplastics (Japan) 1140A1
PPS Polyplastics 1140A1 is a high‑toughness 40% glass‑fiber‑reinforced polyphenylene sulfide engineering plastic. It delivers outstanding heat resistance, flame retardancy, dimensional stability and excellent chemical resistance.
Main Applications
Automotive components: water pumps, sensor housings.
Electrical‑Electronic Industry: connectors, coil bobbins.
Mechanical & chemical parts: gears, valves, pump bodies.
Physical Properties
| Property Category | Test Item | Test Condition | Test Standard | Test Data | Unit |
|---|---|---|---|---|---|
| Physical Properties | Density | — | ISO 1183 | 1.66 | g/cm³ |
| Water Absorption | 23℃, 24hr | ISO 62 | 0.01‑0.03 | % | |
| Melt Viscosity | 310℃, 1000/sec | ISO 11443 | 380 | Pa·s | |
| Molding Shrinkage‑Flow Direction | 80℃×2 mmt | Internal Method | 0.3 | % | |
| Molding Shrinkage‑Transverse Direction | 80℃×2 mmt | Internal Method | 0.7 | % | |
| Mechanical Properties | Tensile Strength | 23℃ | ISO 527‑1,2 | 185 | MPa |
| Strain at Break | 23℃ | ISO 527‑1,2 | 1.8 | % | |
| Flexural Strength | 23℃ | ISO 178 | 260 | MPa | |
| Flexural Modulus | 23℃ | ISO 178 | 13000 | MPa | |
| Charpy Notched Impact Strength | 23℃ | ISO 179/1eA | 10.0 | kJ/m² | |
| Rockwell Hardness | — | ISO 2039‑2 | 105 | M Scale | |
| Thermal Properties | Heat‑Distortion Temperature (HDT) | 1.8 MPa (1.82 MPa) | ISO 75‑1,2 | 265 | ℃ |
| Linear Thermal Expansion Coefficient‑Flow Direction | — | ISO 11359‑2 | 1‑2 ×10⁻⁵ | /℃ | |
| Linear Thermal Expansion Coefficient‑Transverse Direction | — | Enterprise Standard | 4 ×10⁻⁵ | /℃ | |
| Electrical Properties | Volume Resistivity | — | IEC 60093 | 1×10¹⁶ | Ω·cm |
| Surface Resistivity | — | IEC 60093 | 8×10¹⁶ | Ω | |
| Dielectric Constant | 1kHz / 1MHz | IEC 60250 | 4.6 | — | |
| Dielectric Loss Tangent | 1kHz / 1MHz | IEC 60250 | 0.002 | — | |
| Dielectric Breakdown Strength | 3 mmt | IEC 60243‑1 | 15 | kV/mm | |
| Comparative Tracking Index | — | IEC 60112 | 150 | V | |
| Flame Retardancy | UL Flammability Rating | — | UL 94 | V‑0 | — |
Processing Guidelines
1140A1 PPS is mainly applied for injection molding. Its melt flowability is between ABS and PC, featuring fast solidification and low shrinkage. Please pay attention to the following points during processing:
Material pre‑treatment: Although PPS has extremely low water absorption, sufficient drying before injection molding is still required. It is recommended to dry at 130‑140 °C for 2‑4 hours to guarantee product quality and avoid bubbles or silver streaks.
Injection temperature and pressure: Higher injection pressure and injection speed are preferred. Reference temperature settings: ‑ Melt temperature: 290‑320 °C ‑ Barrel temperature: Rear 300‑320 °C, Middle 290‑310 °C, Front 280‑300 °C ‑ Nozzle temperature: 290‑300 °C ‑ Mold temperature: Recommended 100‑150 °C. Appropriately raising mold temperature improves flowability and surface quality of molded parts.
Mold design: Due to fast‑solidification feature of PPS, large taper for sprue, short runner and sufficient vent slots shall be provided to prevent short‑shot and burn marks.
Note: All information above is for reference only!
