I’ve been doing some digging and can’t find anything in specific that directly lays it out, what is the service temp of PVA in a mold release/ film barrier application. I want to use PVA to seal some washout mandrels, cure temp will be about 180F. I want to move away from the touch labor of tapping mandrels, and instead dip or spray them. Any help will greatly appreciated.
few 100c I believe, I did 80c without any problems (176f)
Partall has the standard green PVA and another one that’s purple. See:
http://www.rexco-usa.com/polyvinyl-alcohol-pva-based-parting-films/
The green one doesn’t have a max temperature specified but if you go to the spec of the purple one it says 300F (http://www.rexco-usa.com/documents/TDS_Partall%20Coverall%20Film.pdf)
I’ve never used the purple so I’m not sure if it applies differently then the normal green stuff.