In my latter waste-to-fuel venture company, I was designing a microreactor that required bonding high-temp inert tubing to high-temp ("pyrex"-type) glass - which is already a challenge, but guess what the tubing was? Teflon. Everyone's heard of the ol' "so how do they get Teflon to stick to the pan?". Basically, you don't. It isn't "stuck", it's "locked", mechanically. So we're sticking Teflon to glass - fun, huh? We were using a technique* from a team at Lehigh: the glass was etched with a diamond hole-saw, and the Teflon was micro-'etched' with a funky fluoro- compound. That created a much larger, very ragged irregular surface area at the micro-level, "increasing bondability and co-efficient of friction" according to the FluoroEtch datasheet. We then used Duralco 4460 high-temp, low-viscosity, low-shrinkage epoxy from CoTronics. So, basically, the epoxy wasn't really so much "stuck" to the Teflon, as it was like having a too-small threaded bolt in a threaded hole, with a really sticky strong gap filler locking them together. Key is obviously just surface roughness/surface area; also clean surface prep so there was good bonding to the glass. Seems pretty analogous, now. So, that said, here're your thoughts & my responses.
