PPS
Polyphenylene sulphide (PPS) is an organic polymer consisting of aromatic rings linked by sulphides.
PPS is a partially crystalline, high-temperature performance polymer that has a high melting point of approximately 280°C, strong chemical resistance and is inherently flame retardant.
It has self-extinguishing properties without the addition of any flame-retardant chemical additives.
It is known to exhibit a great number of beneficial properties, including resistance to heat, acids, alkalies, mildew, bleaches, ageing, sunlight, and abrasion. It’s dye-resistant and absorbs only small amounts of solvent.
MATERIAL REFERENCE - FLUORINOID® FL348
DESCRIPTION- VIRGIN PPS (POLYPHENYLENE SULPHIDE)
PPS compounds can be modified with different fillers to provide application-specific solutions. Its easy blend-ability can lead to a vast range of compounds.
It can be easily processed and is usually chosen as an alternative to metals, making PPS an ideal choice of material to produce complex parts with very tight tolerances.
Our semi-finished capacity and capability
- Moulded tube up to 1200mm (47”) dia
- Moulded rod up to 300mm (12”) dia
- Extruded tube up to 100mm (3.5”) dia
- Extruded rod up to 90mm (4”) dia
- Moulded sheet up to 500mm x 500mm x 40mm (19.5” x 19.5” x 1.5”)
| Material Property | Unit | Indicative Value Unfilled High Mw PPS |
Indicative Value GF Filled PPS |
|---|---|---|---|
| Tensile Strength | MPa | 80-90 | 170-195 |
| Tensile Elongation at Break | % | 4-6 | 1.5-1.9 |
| Tensile Modulus | MPa | 3400-3500 | 13000-14700 |
| Density | g/cm3 | 1.35 | 1.65 |
| Notched Impact strength | kJ/m2 | 70-82 | 25-34 |
| Rockwell Hardness (M) | D | 90 | 100 |
| Typical Melting Range | °C | 270-285 | 270-85 |
| Typical glass transition temperature | °C | 80-90 | 80-90 |
| Service Temperature | °C | Less than 200°C | Less than 240°C |
| CTE | 10-4 /°C | 0.50-0.52 | 0.20-0.26 |
| Deflection Temperature 1.8 MPa | °C | 110-115 | 250-270 |
| Dielectric Constant at 1 MHz | 4.4-4.6 | 3.9-4.1 | |
| Dissipation Factor Tan δ at 1 MHz | E-4 | 9-11 | 18-20 |
| Dielectric Strength | kV/mm | 17-18 | 28-31 |
| Volume Resistivity | Ohm.m | 1 x E9 | >1 x E15 |
These values to be considered as indicative rather than accurate. As filled PPS grades are very common, properties of both unfilled and filled grades are shown.
