PPS is well known for its excellent resistance to chemicals, and mainly in the presence of Sox; hence its widespread use in coal-fired power stations.
Because of its constitution, it does not hydrolyse, but it is sensitive to oxidation, so it is necessary to know which strong oxidizing agents are present in the smoke (O2, NO2, Br2 and other metallic oxides).
Its thermoplastic aspect enables heat welding.
PPS exists in various fibre finenesses, one of which is multilobal.| Properties of the fibre : | |||
| Trade marks : | PPS | ||
| Chemical composition : | Procon®, Torcon® | ||
| Specific gravity : | 1.38 g/cm3 | ||
| moisture absorpition : | 0.6 (20°C H.R. 65% ) | ||
| Tenacity : | 3.0-3.5 cN/dtex | ||
| Elongation : | 25.35 % | ||
| Max continuos temperature: | 190 °C | ||
| Max temperature (peaks) : | 200 °C | ||
| Loi (limit oxygene index) : | 40 % | ||
| Chemical resistance: | |||
| Strong acids : |  |
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| Weak acids : | |
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| Strong alkallis : | |
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| Weak alkallis : | |
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| Oxidising agents : |  |
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| Hydrolys : | |
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| Fibre specific solvents : | HNO3 | ||
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