Talk Composites - The Forum for Advanced Composites

Infuse and wetlay/bag, which epoxy?

http://www.talkcomposites.com/Topic5926.aspx

By prsw - 4/29/2013 8:27:53 AM

Hi

Due to complex part etc I am now doing a part with a infusing stage and then another stage
with UD reinforcements, core etc, that I wetlay and bag.
Would the IN2 work for both applications?
The viscosity will not be a big problem as I can store it a little bit cold for the second stage.
But would the cohesion be good? (after light sanding and aceton washing)
Also, if I use fast hardener for the first stage infusion, and slow for the second stage,
would that work?

Or,
IN2 first and then IL2?

/Petter
By prsw - 4/30/2013 4:09:22 PM

Thanks Warren

 

Warren (Staff) (30/04/2013)
Yes they are both epoxy resins and very similar in composition and formulation except one is formulated specifically for infusion.  As always, a rough surface is best for mechanical adhesion and the sooner you add the additional layers after the infusion has initially cured, the more cross linking there will be between the additional layers (not all resin is cured 100% when at the demouldable stage in a parts cure).