PPS
The King of Corrosion
Resistance at High Temperatures
PPS is renowned for its continuous service temperature of 200°C, resistance to nearly all chemicals,
extremely low water absorption, and intrinsic flame retardancy.
200°C
Water Absorption
Flame Retardancy
Stability
No Softening
< 0.02%
V-0
Steel-like
Core Material Advantages
“High-temperature rigidity + chemical resistance” industrial capability
200°C Corrosion
Resistance
Zero solubility below 200°C with exceptional chemical resistance.
Steel-like Dimensional Stability
Metal-like stability: Low CTE and superior creep resistance.
Near-Zero Water
Absorption
Near-zero water absorption (< 0.02%) for superior underwater reliability.
Intrinsic
V-0
Inherent flame retardancy: V-0 rated without additives.
King of Cost-
Performance
Cost-effective PEEK alternative: 1/3 price for high-volume manufacturing.
PPS Properties and Key Characteristics
| Performance Metric | Peak Performance |
|---|---|
| Density | 1.35–1.65 g/cm³ (GF40% Reinforced) |
| Tensile Strength | 80–200 MPa (Reinforced) |
| Continuous Service Temp | 200°C (Short-term 240°C) |
| Melting Point | 280°C |
| Heat Deflection Temp (1.8 MPa) | >260°C (Reinforced) |
| Water Absorption | <0.02% (Lowest among engineering plastics) |
| Chemical Resistance | Resistant to acids, bases, salts, oils, solvents (<200°C) |
| Flame Retardancy | UL94 V-0 @ 0.4mm, Low smoke, Non-toxic |
| Dimensional Stability | CTE 20–50 × 10⁻⁶ /°C (Near Metal) |
| Dielectric Strength | 20–25 kV/mm |
| Advantages | Disadvantages |
|---|---|
| 200°C long-term use + Chemical resistance | Moderate toughness (Requires reinforcement) |
| Extremely low water absorption (<0.02%) | High melt viscosity (Requires high mold temp) |
| Inherent flame retardancy V-0 | Not resistant to strong oxidizing acids (e.g., conc. HNO₃) |
| Excellent dimensional stability | Limited colors (Natural/Black) |
| High cost-performance ratio (1/3 the price of PEEK) | UV resistance requires modification |
| Application Scenarios | Core Value |
|---|---|
| Engine Compartment | 200°C + Oil resistance + Lightweight |
| Chemical Pumps & Valves | Acid & alkali resistance + Zero water absorption |
| Electronic Connectors | Dimensional stability + Flame retardant |
| High-temp Filtration | Flue gas resistance + Long service life |
| Metal Replacement | 50% weight reduction + Insulation |
| Material | Cont. Temp (°C) | Water Absorp. | Chemical Res. | Flame Ret. | Cost |
|---|---|---|---|---|---|
| PPS | 200 | 0.02% | ★★★★★ | V-0 | ★★★★☆ |
| PEI | 170 | 0.25% | ★★★★☆ | V-0 | ★★★★☆ |
| PEEK | 250 | 0.1% | ★★★★☆ | V-0 | ★★★★★ |
| PA66 | 120 | 2.5% | ★★☆☆☆ | V-2 | ★★☆☆☆ |
| PTFE | 260 | <0.01% | ★★★★★ | V-0 | ★★★★★ |
Industry Applications
Automotive
Engine bay, fuel pumps, EV cooling modules.
Electronics
Connectors, 5G base station filters, SMT components.
Chemical
Pump shells, impellers, valves, anti-corrosion linings.
Filtration
High-temp flue gas filter bags for power plants.
Aerospace
Fuel pipe clamps, cable jackets, lightweight interior parts.
Processing & Customization
Injection
Extrusion
PPS + GF40%
40% glass fiber reinforcement, increasing strength by 200%.
PPS + PTFE/Graphit
Wear-resistant grade, reducing the coefficient of friction by 70%.
Conductive PPS / Conductivity PPS
Antistatic and EMI shielding
MARKET TRENDS
With the explosive growth of new energy vehicles (EVs) and the large-scale deployment of 5G base stations, PPS, as a core material for domestic substitution, has seen China’s production capacity account for more than 70% of the global total.
- Key materials for the three-electric system of new energy vehicles
- 5G High-Frequency Filter and Communication Connector Alternatives
- Ultra-clean flue gas emission reduction under carbon neutrality
70%
Domestic Capacity
1/3
PEEK Cost ratio
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