Polyphenylene sulphide (PPS)
Polyphenylene sulphide – it is engineering plastic retaining very good interbalanced mechanical, thermal, and chemical characteristics. Chemical name – PPS. It often replaces PEEK plastic in many areas, where good mechanical and chemical characteristics, stability of dimensions, economy, and relatively high temperature is required.
Polyphenylene sulphide – it may be produced with various additives like glass fibre or solid lubricant, as it provide this plastic with special characteristics. Plastic containing 40 % of glass fibre may be used within the interval till +230 oC. This type of plastic may replace lightweight metals.
PPS plastic is not warehoused, it is delivered only on special orders.
Characteristics:
- It features mechanical strength, rigidity, and hardness;
- Stability of dimensions is ensured even under high temperatures (PPS with glass fibre);
- Good anti-friction characteristics;
- Non-flammable, self-extinguishing;
- Easy mechanical workability;
- Sufficiently good adhesive characteristics;
- Resistant to hydrolysis;
- Practically does not absorb water;
- Chemically resistant to fuel, lubricants, fats, methanol, alkalis, water at +100 oC, to solvents, even at high temperature;
- Features restricted chemical resistance to non-oxidising acids (depending on concentration);
- Non-resistant to salt, nitrogen acids;
- Colour: natural (brownish) and black.
Technical data:
- Density: 1.35 g/cm3 (PPS);
- Density: 1.65 g/cm3 (PPS with glass fibre);
- Operating temperature: -20 oC - +220 oC;
- Short-term operating temperature: +260 oC (PPS);
- Operating temperature: 0 oC - +230 oC (PPS with glass fibre);
- Reaction to fire class: V0 (UL 94).
Dimensions:
|
|
Thickness (mm) |
Width (mm) |
Length (mm) |
Diameter, Ø (mm) |
|
Sheets* |
10-50 |
620 |
1000 |
- |
|
Bars |
- |
- |
1,000; 3,000 |
10-80 |
*Sheets are produced only on special orders.
Scope of application:
PPS plastic is used, where it is required to ensure stability of dimensions, even at sufficiently high temperature: for production of diagnostic devices, liquid chromatographs, thermostats, and parts of test socket electronics.
Production of wheeled motor vehicles: for production of parts for engines, fuel injection systems, carburetters, and pumps.
Industry of electrics and electronics: for production of insulators, holders of carbon brushes, plug-in adapters, rosettes, housings of reels, and other parts.
Production of structural units: pumps, water gauges, valves, parts of valves, bolts, sealing elements.
Medicinal industry: for production of sterilisation apparatuses.
