Polypropylene fibre is well known for its excellent chemical resistance, in acid or alkaline surroundings, but its maximum operating temperature is limited to 80°C.
As it is thermoplastic, it is easy to heat weld bags made of polypropylene.
This fibre is frequently used to make of cloths for wet filtration.
| Properties of the fibre : | |||
| Trade marks : | PP | ||
| Specific gravity : | 0.91 g/cm3 | ||
| moisture absorpition : | 0.05 (20°C H.R. 65% ) | ||
| Tenacity : | 4.5-6 cN/dtex | ||
| Elongation : | 35 % | ||
| Max continuos temperature: | 80-90 °C | ||
| Max temperature (peaks) : | 90-100 °C | ||
| Loi (limit oxygene index) : | 18 % | ||
| 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 : | Chlorinated solvents | ||
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