🧩 PPS+Noryl – Polyphenylene Sulfide + Noryl® (PPO/PA blend)
(A high-performance technical hybrid material combining the thermal and chemical resistance of PPS with the dimensional stability and controlled rigidity of Noryl®. Lightweight and resistant up to 230°C.)
🔹 What is PPS+Noryl
PPS+Noryl is a compatibilized blend of PPS and Noryl® (PPO/PA). This combination offers significant weight reduction compared to pure PPS, improved impact and vibration resistance, and minimal shrinkage. It is frequently used in technical OEM parts that require a balance between extreme rigidity and a slight degree of elasticity to survive harsh automotive environments.
🔧 Composition & Properties
- Base: 50–70% PPS, 30–50% Noryl® (PPO/PA / PPE/PS).
- Density: 1.30–1.45 g/cm³.
- Melting Point: ≈ 270–285 °C.
- Chemical Resistance: Excellent (oils, fuels, solvents).
- Continuous Heat Resistance: 200–230 °C.
🚗 Where PPS+Noryl is used in the automotive industry
| Component | Example parts | Observations |
| Engine / Thermal | Sensor covers, pumps, EGR housings | Stability up to 230 °C |
| Electrical / Connectors | Housings, guides, sensor plates | Rigidity + good insulation |
| Fuel / Braking | Fittings, valves, pressure parts | Chemically inert, low shrinkage |
| Structural / Supports | Covers, clips, frames | Lightweight, rigid, stable |
🔧 Welding Temperature and Methods
| Method | Optimal Temp | Observations |
| Hot Air | 300 – 320 °C | Uniform melting, precise control |
| Plastic Extrusion | 290 – 310 °C | Suitable for thick technical parts |
| Heat Plate (Mirror) | 290 – 310 °C | Clean bonding, no oxidation |
🔩 Material Compatibility
- ✅ Compatible: PPS, PA+PPS, Noryl GTX®, PPS+GF, PA+PPE.
- ⚠️ Good Compatibility: PEI, PSU, PES, PPSU, PPA.
- ❌ Incompatible: PP, PE, PS, ABS, PC, PET (completely different melting points).
💡 ReplastMD Recommendation: Use PPS or PPS+Noryl rods at 310°C. Heating must be uniform and overheating should be avoided to prevent phase separation. Slow cooling ensures a homogeneous and durable bond.
🧠 How to Identify PPS+Noryl
- Engraved marking: >PPS+NORYL<, >NORYL GTX<, >RYTON N<, >FORTRON N<.
- Texture: Semi-glossy, rigid, slightly elastic to the touch.
- ReplastMD practical test: If the part is rigid but slightly flexible with a matte-satin finish and PPS+Noryl markings, it’s confirmed. Softens at ≈ 280 °C.
🛠️ PPS+Noryl Welding at ReplastMD:
At our ReplastMD service center (Chisinau, Ciocana sector), we perform professional PPS+Noryl welding for technical housings and EGR components, ensuring a high-strength, heat-resistant, and factory-grade finish.