This has been done, we're using a typical naphta based semi-permanent mold release system; 4 applications of sealer & 2 applications of release, recoating release between parts. The issue is the prepreg outgasses amic acid, which is oxygenated. Oxygenated materials are particularly destructive...
We're working with AFRPE4 prepreg on Invar42 (700F & 200psi) & having issues with resin continuity at the surface of the tool...basically, the prepreg is leaving behind large amounts of resin flashing. Any advice?