Polyethersulfone, PES or PESU, is an amorphous and pale amber high-performance thermoplastic material that has good transparency and inherently flame resistance, and it is one of the lowest smoke-emitting materials available. PES is known for its dimensional stability at high temperatures in both air and water. It also has good electrical properties and chemical resistance.
- Outstanding Creep Resistance up to 150°C in the long term.
- Good Chemical Resistance: Highly resistant to acids, alkalis, oils, greases, and aliphatic hydrocarbons and alcohols…
- Good Optical Clarity
- Very Good Hydrolytic & Sterilization Resistance
- Excellent Electrical Insulation Properties
- Outstanding Rigidity even at high temperatures.
battery caps, oil pumps, pump housing, oil control pistons, valve pistons, carburetor parts, bearing cages and ignition components, headlights, coil formers, gear pumps, plug-and-socket connectors, IC carry sockets, injection-molded printed circuit boards, parts for power circuit breakers, parts for power contactors and relays, sterilizing boxes, infusion equipment…
| Item | Property | Test Method | Unit | Value |
|---|---|---|---|---|
| Physical | Density | ASTM D792 | g/cm3 | 1.37 |
| Water Absorption | ASTM D570 | % | 0.54 | |
| Rockwell Hardness | ASTM D785 | R scale | 124 | |
| Mechanical | Tensile Modulus | ASTM D638 | psi | 3.9 × 105 |
| Tensile Strength | ASTM D638 | psi | 12,000 | |
| Tensile Elongation | ASTM D638 | % | 30 | |
| Flexural Modulus | ASTM D790 | psi | 4.2 × 105 | |
| Flexural Strength | ASTM D790 | psi | 16,100 | |
| Izod Impact | ASTM D256 | ft-lb/in | 1.3 | |
| Thermal | Vicat Softening Point | ASTM D648 | °C/°F | 222 / 431 |
| Heat Deflection Temperature at 264 psi | ASTM D648 | °C/°F | 203 / 398 | |
| Flammability | UL94 | - | V-0 | |
| Electrical | Electrical Volume Resistivity | ASTM D257 | Ω-cm | >1015 |
| Surface Resistivity | ASTM D257 | Ω / sq | >1015 | |
| Dielectric Constant | ASTM D150 | 1 MHz | 3.5 | |
| Dissipation Factor | ASTM D150 | 1 MHz | 0.0056 | |
| Dielectric Strength | ASTM D149 | V/mm | 1.5 × 104 | |