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Anti-adhesion coating for copper parts heated at 350C

Hi, I'm looking for efficient coating for anti-adhesion and sliding properties for a part in copper used for heating plastic products (polyolefin) with potential contact.

Active surface is around 200mm square, heated up by numerous heating cartridges, the temperature will have to be able to reach 350°C.

I thought about teflon but I am a little bit afraid about maximum temperature which seems to be around 300°C. Is there another alternative ?

If somebody has some ideas this will be helpful.

Thank you.

Sylvain Drochon
Development engineer - Nantes, France
July 4, 2008

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What does the rest of the industry use?
I think that teflon impregnated Electroless nickel is worth looking into and or trying out.

James Watts
- Navarre, Florida
July 9, 2008

If nickel-teflon is unsuitable due to degradation by temperature, maybe chrome or plain electroless nickel will work for a time. Alternatively, some reports mention that gold is also resistant to adhesion because it resists attack, specially when chlorides are present.

Guillermo Marrufo
Monterrey, NL, Mexico
July 14, 2008