Phenolic coating

[Garlik]

What do you thing about phenolic coatings and PTFE coatings? Are they good solutions for high temperature and corrosion services?
Thanks and regards.

 

[Garlik]

And also, can you link me to datasheet and info about these kinds of coating please?
Thanks!

 

[MikeHalloran]

I've manufactured phenolic composites from resin and from prepreg.

My limited experience says that it takes heat pretty well, it's brittle, and it doesn't bond to anything particularly well. Which doesn't mean that you couldn't line something with precured phenolic.

I'm not sure how you could apply it as a coating, say over an adhesive, because the phenolic resin itself releases a substantial amount of water as a reaction product during cure, just as it changes from a low viscosity liquid to a gelatinous... something, and before it gets truly hard.



Mike Halloran
Pembroke Pines, FL, USA

 

[abcmex]

Garlik,
Can you please be more specific about your requirements? High temperature is not a very helpful description, better if you can say how high is the expected temperature.

There are many coatings on the market but each has certain application limits. Some times even pressure and form of the coated object limit the operation range.

rgs

 

[JLSeagull]

If you check into HVAC coating you will find epoxy-ester and phenol coated coils. Perhaps searching HVAC coatings on the web could be a starting point to find further details.

 

[NGiLuzzu]

The question is vague enough, but - in any case - I would never use PTFE over +220°C

 

[gerhardl]

I would like to have your question 'turned around'.

Please describe the application with fluid, flow, pressure, temperature and operational data (including variations in process, stop, start, dry periodes and regulation requirements (if any)).

I can guarantee that you will get an input in both ideas for valves to use and phenolic/PTFE coatings application more extensive than based on the original question.