Polyphenylene Sulfide
Polyphenylene Sulfide (PPS): The High-Performance Engineering Plastic
Polyphenylene Sulfide (PPS) is a high-performance engineering thermoplastic known for its exceptional thermal stability, chemical resistance, and mechanical properties. This semi-crystalline material offers outstanding performance in demanding applications across various industries including automotive, electrical/electronic, and industrial sectors.
Key Features of Polyphenylene Sulfide:
- Excellent thermal stability with continuous use temperature up to 220°C (428°F)
- Outstanding chemical resistance to a wide range of solvents and chemicals
- High mechanical strength and dimensional stability
- Inherent flame retardant properties (UL94 V-0 rating)
- Good electrical insulation properties
- Low moisture absorption
Polyphenylene Sulfide Technical Specifications:
| Property | Value | Test Method |
|---|---|---|
| Density | 1.35 g/cm³ | ISO 1183 |
| Tensile Strength | 80-110 MPa | ISO 527 |
| Flexural Strength | 130-180 MPa | ISO 178 |
| Heat Deflection Temperature | 260°C (500°F) | ISO 75 |
| Continuous Service Temperature | 200-220°C (392-428°F) | - |
| Dielectric Strength | 15-20 kV/mm | IEC 60243 |
Polyphenylene Sulfide Grades Available:
We offer various grades of Polyphenylene Sulfide to meet different application requirements:
- Unfilled PPS (for general applications)
- Glass Fiber Reinforced PPS (20%, 30%, 40% glass fiber)
- Mineral Filled PPS
- Glass/Mineral Hybrid PPS
- Impact Modified PPS
- Conductive PPS
Polyphenylene Sulfide FAQ:
Q: What temperature can Polyphenylene Sulfide withstand?
A: Polyphenylene Sulfide has an outstanding heat resistance with a heat deflection temperature of 260°C (500°F) and can be used continuously at temperatures up to 220°C (428°F) without significant degradation of mechanical properties.
Q: How does Polyphenylene Sulfide perform in chemical environments?
A: Polyphenylene Sulfide exhibits excellent chemical resistance, particularly to organic solvents, acids, and bases. It is resistant to most chemicals at temperatures up to 200°C, making it ideal for harsh chemical environments.
Q: What are the typical applications of Polyphenylene Sulfide?
A: Typical applications include automotive components (sensors, fuel system parts), electrical components (connectors, sockets), industrial parts (pumps, valves), and various high-temperature applications where conventional plastics would fail.
Processing Guidelines for Polyphenylene Sulfide:
Polyphenylene Sulfide can be processed using standard thermoplastic methods:
| Processing Method | Temperature Range | Mold Temperature |
|---|---|---|
| Injection Molding | 300-360°C (572-680°F) | 130-150°C (266-302°F) |
| Extrusion | 320-340°C (608-644°F) | - |
Comparison with Other Engineering Plastics:
Polyphenylene Sulfide offers superior properties compared to many other engineering plastics:
- Higher temperature resistance than PBT and nylon
- Better chemical resistance than PEEK in some applications
- More dimensionally stable than polyimides
- Lower moisture absorption than most engineering plastics
Quality Assurance:
Our Polyphenylene Sulfide products meet the following standards:
- ISO 9001 certified manufacturing
- UL Recognition (subject to specific grades)
- RoHS and REACH compliant
- FDA compliant grades available for food contact applications
Polyphenylene Sulfide in Specific Industries:
Automotive Applications: Used in under-hood components, fuel system parts, and sensors due to its heat and chemical resistance.
Electrical/Electronic: Ideal for connectors, sockets, and coil bobbins because of its excellent electrical properties and flame retardancy.
Industrial: Common in pump components, valve parts, and chemical processing equipment.
Additional Polyphenylene Sulfide FAQs:
Q: Is Polyphenylene Sulfide suitable for food contact applications?
A: Yes, certain FDA compliant grades of Polyphenylene Sulfide are approved for food contact applications, making them suitable for food processing equipment and appliances.
Q: How does Polyphenylene Sulfide compare to PEEK in terms of cost and performance?
A: Polyphenylene Sulfide offers comparable performance to PEEK in many applications at a significantly lower cost, making it a cost-effective alternative when the slightly lower temperature capability isn't a limiting factor.
Q: Can Polyphenylene Sulfide be machined?
A: Yes, Polyphenylene Sulfide can be machined using conventional metalworking equipment, though its abrasive nature requires carbide tooling for best results.