PPS high temperature properties

[jedward]

Ryton PPS bearing grade must change significantly at very high temperatures, above 300 C
Where can I get data on mechanical properties for this temperature ?

Nothing useful from polymer supplier was forthcoming.
Does this material degrade gracefully, get soft or turn to ??
I need only modes strength at temperature and have only minimal loading.

 

[cloa]

Have you tried contacting Chevron Philips?

http://www.cpchem.com/bl/rytonpps/en-us/Pages/ThermalStability.aspx

http://www.eng-tips.com/threadminder.cfm?pid=1529

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[cloa]

Given that the processing melt temperature is 304-338 then it will probably just thermally deform and possibly melt at 300+C however I couldn't see the bearing grade.

http://www.cpchem.com/bl/rytonpps/en-us/Documents/RytonIMSetup.pdf

http://www.eng-tips.com/threadminder.cfm?pid=1529

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[jedward]

Cheveron was non-responsive
if RYTON only "softens" at up to 350C, my application as a thermally insulating support for a heatshield in a zero g vacuum (space) should suffice.
thanks for response
Some additional testing will be required (but not at zero g)
the bearing grade (carbon filled) provides electrical conductivity I need

 

[Pud]

It melts around 285ºC so your bearing will be runny.

H

www.tynevalleyplastics.co.uk

It's ok to soar like an eagle, but weasels don't get sucked into jet engines.

 

[Demon3]

Try this link. They allow you to sort all the polymers by softening temperature (HDT) or max operating temperature.

http://www.boedeker.com/mtable.htm

Dr. Chris DeArmitt - FRSC

http://www.linkedin.com/in/chrisdearmitt/