Efficient Viscous Fluid Degassing Techniques for Epoxy Resin: Tips from Experts

[Buchimuer]

Hi all!

I'm currently working with epoxies and very viscous silicone oils.
The problem is when I mixing the two part epoxy, there will be a lot of bubbles in the resin. I managed using heat gun to break air bubbles near the surface, but the bubble at bottom of the mold cannot flow up.
I know you all have lots of experience with epoxy, would you please give me some advise for degassing the epoxy resin? Is buying an vacuum vessel be the only solution?

Thanks!

 

[anorlunda]

You don't have much time after the catalyst is mixed. Eliminating the bubbles while in the pot might take too much time.

In boat construction, the epoxy is first applied in thin layers. Then rollers and brushes eliminate the bubbles.

 

[Djones1001]

You could also consider a pressure vessel it allows you to vacuum or pressurize the resin. Thick resin can be difficult to vacuum.
https://www.pittsburghsprayequip.co...resins-reduce-eliminate-bubbles-resins-guide/