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PTFE properties at elevated temps

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apsix

Structural
Sep 21, 2004
1,358
AU
Does anyone have values for long-term modulus of elasticity for glass fibre filled (25%) PTFE at 100 & 200 deg C? Or alternatively short term E values and values for creep?

John
 
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Well for what its worth apsix, my experience at 200 deg C is its pretty much zero. As soon as even modest pressure is applied, the glass re-enforcement just gets displaced by PTFE creep.
You should be able to find manufacturer's information on what you seek up to 100 deg C though.
 
Thanks
A lot of manufacturers state the max usable temp is 260 degC but I've not seen any info on creep at that temperature.
 
PTFE is stable to decomposition to quite high temperatures. I would have thought without checking that around 300 deg C would be possible, however PTFE is very poor to creep, it is even relatively poor at room temperature. Increasing the temp can only exacerbate the problem

Regards

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