PTFE fibre is made using two different technologies, and this accounts for its two different colours: white or brown.
It is a top-of-the-range fibre, well known for its high price, which is justified by its excellent heat and chemical resistance; this means that it is especially well suited to difficult applications (incineration furnaces, and cement, lime and metalworking kilns).
Because it is difficult to work, and entails high levels of investment, only a small number of felt manufacturers can boast of producing PTFE filtration media.
| Properties of the fibre : | |||
| Trade marks : | PTFE | ||
| Chemical composition : | Profilen®, Toyoflon® | ||
| Specific gravity : | 2.1 g/cm3 | ||
| moisture absorpition : | 0.015 (20°C H.R. 65% ) | ||
| Tenacity : | 1.6 cN/dtex | ||
| Elongation : | 15 % | ||
| Max continuos temperature: | 240-260 °C | ||
| Max temperature (peaks) : | 280 °C | ||
| Loi (limit oxygene index) : | 95 % | ||
| 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 : | F | ||
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