[PEEK]

I thinkthis belongs to the type of composite...

I am not a bug I am a undocumented feature

Jeremy, you could either use an adhesive (epoxy resins have excellent adhesion to PEEK, cyanoacrylates are pretty good too). Or you could try welding the PEEK component to the surface. The success of this depends on the matrix in your composite, if it's a PEEK matrix you should get excellent weld strength to the composite, if it's not then the weld strength will largely depend upon the degree of mechanical keying you can obtain. What thickness of PEEK do you need on your composite? If it's only thin you could use a powder coating technique to apply a layer of PEEK to your composite.

Thanks for your answer,

It is a thin film of PEEK I have to stick on an epoxy carbon composite Do you think a grit blaster will be enough or should I use something as acid etching in PEEK surface?

Thanks by advance Jérémy

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If you're adhesively bonding then acid etching or plasma treatment will give you the best results, if you're going to try and weld the PEEK to the composite I would grit blast and then clean the surface with acetone.