carbon filled ptfe datasheet
carbon filled ptfe datasheet
(OP)
I have an assembly which uses a plastic cover subjected to low mechanical loads but also to -40 to +200°C temperature range. It's 150mm diameter by 90mm high.
At the moment we are using 25% carbon filled ptfe, but due to mechanical creep where it is fixed we might use Ertalon 66GF30. Although more borderline on temperature, it seems more stable mechanically.
Any thoughts are welcome but I'm really after a decent datasheet on the carbon filled ptfe that I can use to compare with the quadrant datasheet I found here:
htt p://epp.qu adrantplas tics.com/a ssets/base 2/pdfs/Eng lish/mater ialdatashe ets2/pa/PD SERTALON66 GF30EN.pdf
I'm aware there are more exotic materials that may fit the bill but cost is a consideration here.
At the moment we are using 25% carbon filled ptfe, but due to mechanical creep where it is fixed we might use Ertalon 66GF30. Although more borderline on temperature, it seems more stable mechanically.
Any thoughts are welcome but I'm really after a decent datasheet on the carbon filled ptfe that I can use to compare with the quadrant datasheet I found here:
htt
I'm aware there are more exotic materials that may fit the bill but cost is a consideration here.





RE: carbon filled ptfe datasheet
Ertalon 66GF30 is just an ordinary GF grade. 200 deg (imho) would be somewhat optimistic.
Have a look at the PPA based materials - eg Grivory, Zytel HTN, etc. or even PPS (if the tool can be heated to 135 deg C). All comparable in price - should process slightly faster as higher HDT too.
www.tynevalleyplastics.co.uk
RE: carbon filled ptfe datasheet
What is the exact type of Carbon that you are using? Depending on the application variations in size and shape will make a huge difference in creep, thermal expansion behaviour, etc.
In the operating conditions given I would - if possible - stick to PTFE matrix material.
Rodney Bennet
Learn more on CheFEM: Chemical interaction driven FEM analysis of advanced materials
http://www.composite-agency.com/CheFEM.htm
RE: carbon filled ptfe datasheet
As stated the aspect ratio and bonding of the carbon fiber to the matrix will affect creep.
Chris DeArmitt PhD FRSC CChem
www.phantomplastics.com
Consultant to the plastics industry
RE: carbon filled ptfe datasheet
Th hard grade of Hytrel or Arnitel might do the job. They will certainly do OK at -40C. +200C might present a problem.
Nylon 4.6 (Stanyl) will take 200C standing on its head, but it will struggle at -40C.
One problem with nylons at -40C is that they dry out at those temperatures.
I think this will end up with an exotic like polysulphone, PEEK or PEI. I would need to check dat re their low temperature performance.
Regards
Pat
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RE: carbon filled ptfe datasheet
Rodney Bennet
Learn more on CheFEM: Chemical interaction driven FEM simulation of advanced materials
http://www.composite-agency.com/CheFEM.htm
RE: carbon filled ptfe datasheet
As for going to a more exotic material, we did look at Peek and Torlon 4501 PAI coat was ten times that of Ertalon.
RE: carbon filled ptfe datasheet
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
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RE: carbon filled ptfe datasheet
I'm going to try and source this and have a part machined to try.
RE: carbon filled ptfe datasheet