Talk Composites - The Forum for Advanced Composites

Core material print through problem

http://www.talkcomposites.com/Topic12961.aspx

By kiwimanz - 9/22/2014 2:25:28 PM

Hi all,

I'm having an issue with print though from my core materials while infusing.

The project is a race car body so weight is critical.

The first  section of the body was done released, painted with Duratec primer (no gel coat as to keep weight down) 2 layers 5.9oz 2x2 CF, 1/4" Baltek foam. This is slotted and perforated. Slot side down then another layer of 5.9 CF. Infused and got a great part, but the print though was not good. I've using the style of foam a bunch of times but never had that amount of print through.




So next part, used Soric.... even uglier. Had to toss that one away! This was my first attempt using Soric and while I did some test panels that came our great using 18oz CF, the part didn't share the same outcome.

Curious if anyone has used foam core just perf'd and not slotted and had success with the mold side layers wetting out ok?

Thanks for the comments

Cheers

Linz
By matthieutje65 - 9/24/2014 12:14:28 AM

not sure but as far as i know epoxy is more rigid that vinylester... vinylester will be more chemical resistant and heat resistant in some ways
but you can find really good high temp epoxies as well