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Description
Description
Medical Grade PPSU (Polyphenylensulfone) is an amorphous material with improved impact and hydrolysis resistance compared to PSU. It also has an extremely high notch impact strength that remains after heat ageing. Properties of PPSU include:
- Continuous service temperature: 170°C
- High strength and rigidity
- Very high impact strength (also at low temperatures)
- Very good dimensional stability
- Very high chemical resistance
- High resistance to many types of radiation
- Very good sterilisation capability
- Lower chemical resistance than comparable semicrystalline materials
These Medical Grade products are suitable for medical and pharmaceutical applications with direct body contact with tissue, bone, skin, and mucosa for up to 24 hours. All raw materials used for the medical grade products are food grade (FDA, EU 10/2011) and have been tested and evaluated by an independent accredited testing laboratory and meet the following biocompatibility requirements:
- ISO 10993-1: Evaluation and testing within a risk management process
- ISO 10993-5: Tests for in vitro cytotoxicity
- ISO 10993-12: Sample preparation and reference materials
- ISO 10993-18: Chemical characterization of materials
- USP Class VI
Typical applications of Medical Grade PPSU include instrument handles, instruments for microinvasive surgery, sterilisation cassettes, analysis technology, in vitro diagnostics, pump wheels, and valves.
If you have a requirement for machined or finished PPSU components, please ask for more information.
Technical Specifications
| Specification | Measurement |
|---|---|
| Material | PPSU |
| Shape | Rod |
| Colour | Black |
| Density (g/cm³) | 1.31 |
| Water absorption (%) | 0.4 |
| Yield stress (MPa) | 80 |
| Elongation at break (%) | ≥50 |
| Notched impact strength (kJ/m²) | 13 |
| Ball indentation hardness (MPa) | 141 |
| Shore hardness (scale D) | 86 |
| Tensile modulus of elasticity (MPa) | 2350 |
| Thermal conductivity (W/(m*K) | 0.35 |
| CLTE (10⁻⁶K⁻¹) | 56 |
| Service temp long term max (°C) | 170 |
| Heat deflection temperature (°C) | 214 |
| Dielectric constant | - |
Frequently Asked Questions
- What is PPSU used for? PPSU is commonly used for medical and pharmaceutical applications, including instrument handles and sterilization cassettes.
- How does PPSU perform in high temperatures? PPSU has a continuous service temperature of 170°C and maintains its strength and rigidity at high temperatures.
- Is PPSU safe for direct body contact? Yes, PPSU medical grade products are suitable for direct body contact for up to 24 hours and meet stringent biocompatibility standards.