What is DURADEX® PPSU

The DURADEX® series from Solvay is based on polyphenylene sulfone (PPSU), a material valued for its ability to handle high temperatures, repeated sterilization, и mechanical stress without performance loss. Because of this balance of properties, DURADEX grades are widely adopted in medical devices, drinking water systems, electrical insulation, и автомобильные детали where reliability and safety are non-negotiable.

As an international supplier, Juyuan provides the full product range and supports customers with free samples to speed up evaluation and material selection.

1. Shared Advantages of the DURADEX Series

Heat resistance: Glass transition temperature of 220 °C; HDT (1.8 MPa, annealed) at 204 °C.

Flame retardancy: All thicknesses (0.75–3.0 mm) achieve UL94 V-0; glow wire up to 960 °C.

Strength and toughness: Tensile strength 70 MPa, flexural strength 100 MPa, notched Izod impact 640 J/m.

Dimensional stability: Low shrinkage (0.7%), water absorption 0.37%, maintaining accuracy after molding.

Electrical insulation: Volume resistivity 1E19 Ω·cm; dielectric strength 36 kV/mm.

2. Grade Comparison and Typical Uses

DURADEX D-3000 NT (Natural)

  ・Функции: Neutral base resin, suitable for secondary coloring or applications demanding high cleanliness.

  ・Uses: Medical devices, water fittings, food-contact components.

DURADEX D-3000 BK 937 (Black)

  ・Функции: Pre-colored black, saves coloring steps, strong opacity.

  ・Uses: Automotive housings, insulation parts, industrial enclosures.

DURADEX D-3000 TR GY 391 (Transparent Gray)

  ・Функции: Semi-transparent gray, functional plus aesthetic, allows visual monitoring.

  ・Uses: Medical fluid systems, filters, transparent technical housings.

DURADEX D-3000 BB (Blue-Black)

  ・Функции: Blue-black tone, strong identity and decorative effect.

  ・Uses: Consumer electronics, appliance housings, branded components.

DURADEX D-3000 CL 191 (Transparent)

  ・Функции: Clear transparency, good optical properties.

  ・Uses: Medical windows, fluid containers, visible piping systems.

3. Comparison of Different Models and Application Recommendations

Application Areas:

Medical: Handles for surgical instruments, sterilizable housings, dental tools.

Water and Food: Coffee machine components, water dispenser connectors, filter casings.

Electrical & Electronics: Socket housings, insulating parts, switchgear.

Automotive: Pump housings, high-temperature ducts, under-hood components.

Consumer Goods: Heat-resistant tableware, transparent kitchenware.

4. Processing Guidelines

Primary method: Injection molding, suitable for medium-flow designs (Melt Flow Index 30 g/10 min at 365 °C/5 kg).

Drying: 120 °C for 3–4 h, target moisture <0.02% to prevent streaks or bubbles.

Molding temperature: 350–400 °C; mold 150–180 °C for good surface finish and properties.

Equipment: Wear-resistant screws recommended to minimize resin degradation.

Secondary operations: PPSU can be CNC-machined, drilled, or cut; retains properties after steam sterilization (up to 1000+ cycles).

5. FAQs

Q1: How does PPSU compare with PSU and PEI?
PPSU delivers higher impact resistance and thermal stability, making it more suitable for applications requiring repeated sterilization.

Q2: Is DURADEX PPSU safe for food and water contact?
Yes. The grades are widely used in hot water connectors, filter housings, and food service parts.

Q3: Do transparent grades discolor with use?
They maintain clarity well under normal use. For long UV exposure, additional protection is advised.

Q4: Can the material withstand autoclaving?
Yes. DURADEX PPSU resists more than 1,000 sterilization cycles without notable performance loss.

Q5: How can I order or request samples?
Juyuan supplies the complete DURADEX series and provides free samples for qualification testing.

6. Why Source from Juyuan?

Full range coverage: NT, BK 937, TR GY 391, BB, CL 191.

Global trade expertise: 24 years of cross-border supply chain experience.

Free evaluation samples: Reduce risk before committing to large orders.

Technical support: Material selection, processing advice, and application guidance.

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