What would be a good sealant for a glass tank designed to hold isopropyl alcohol?
Hello,
I am a student working on a permanent diffusion cloud chamber. I have everything working so far except for the type of sealant. The chamber is filled with 99%+ isopropyl alcohol vapor which has started corroding my acrylic tank and adhesive over the course of a few weeks.
I’m planning to switch to a glass tank but have not been able to source a good sealant that would be resistant to the alcohol over long term exposure. There seems to be mixed opinions about the combination of silicone and isopropyl and so far I have found no data covering long exposure periods.
Does anyone have any suggestions on something that might work for this?
thanks
-b
RingKeeper
on November 30th, -0001
use a 2 part epoxy and post-heat the cure. the simple DIY epoxies will be good enough. let the epoxy set, then gently heat the system a little. this will get the Tg up and help with solvent resistance.
If you were really looking for the bomb-epoxy, you would go to Air Products’ website and look for various cycloaliphatic amine systems with best chemical resistance. any epoxy like bis A or novolac would suffice with their amines…