Talk Composites - The Forum for Advanced Composites

Using Silicone Rubber for making vacuum bags

http://www.talkcomposites.com/Topic22137.aspx

By Scout - 10/19/2016 4:43:58 AM

Hi guys,

Just wanted to ask if I can use Addition Cure or CS25 Condensation Cure Silicone Rubber to create a "Vaccum bag" over a mould?

I was thinking if I could include the vaccum port/s into the mould flange itself and add a resin infusion port into this silicone rubber based vacuum bag would that work? Has anyone tried this?

Sorry guys might be a stupid question... but I thought I would ask Smile I am just a beginner but looking at the technical datasheet it looks like it can handle the pressure and the temperature?
By Hanaldo - 10/25/2016 3:08:59 AM

Jeez, can't say I'm impressed by their infusion video, they just absolutely flood the laminate and swish it around with their hands before shutting the feed valve and letting it pull the resin down through the rest of the laminate. Voids galore, not to mention uneven laminate thickness. 

Anyway, I'm sure thats just their infusion process. Their silicone bag looks good.