Jan 6 2004
Polyphenylsulphone (PPSu) is an amorphous high performance thermoplastic, which offers better chemical resistance and impact resistance than polyetherimide and polysulphone.
When compared to other amorphous thermoplastics, PPSu provides superior hydrolysis resistance as measured by steam autoclaving cycles to failure.
PPSu has virtually infinite steam sterilizability and outlasts other materials by a factor of 40:1.
Polyphenylsulphone is a type of moldable plastic that is heat and chemical resistant.
This factor makes PPSu an excellent choice for medical devices as steam autoclaves are extensively used to sterilize medical devices.
PPSu is also resistant to common acids and bases such as commercial washing solutions over a wide temperature range.
Applications
Industrial applications of PPSu include aircraft cabin interior components, sterilization trays, surgical and dental instrument handles, and hot water fittings.
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PPSu can be used for Aircraft Cabin Interiors. Image Credit: Ryan Fletcher/Shutterstock
Key Properties
The key properties of Polyphenylsulphone are tabulated below.
Table 1. Key properties
| Electrical Properties |
| Dissipation factor @ 1 MHz |
0.005 |
| Surface resistivity ( Ohm/sq ) |
>1013 |
| Volume resistivity ( Ohm.cm ) |
>1014 |
| Mechanical Properties |
| Elongation at break ( % ) |
30 |
| Hardness - Rockwell |
M80 |
| Tensile modulus ( GPa ) |
2.5 |
| Tensile strength ( MPa ) |
76 |
| Physical Properties |
| Density ( g.cm-3 ) |
1.29 |
| Flammability |
V-0 |
| Limiting oxygen index ( % ) |
44 |
| Radiation resistance - Gamma |
Good |
| Radiation resistance - X-ray |
Good |
| Water absorption ( % ) |
1.2 |
| Water absorption - equilibrium ( % ) |
0.6 |
| Water absorption - over 24 hours ( % ) |
0.35 |
| Thermal Properties |
| Coefficient of thermal expansion ( x10-6 K-1 ) |
55 |
| Heat-deflection temperature - 1.8 MPa ( °C ) |
200 |
| Thermal conductivity ( W.m-1.K-1 ) |
0.35 |
| Upper working temperature ( °C ) |
180-210 |
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