Talk Composites - The Forum for Advanced Composites

Infusion voids

http://www.talkcomposites.com/Topic11388.aspx

By chrisdomaingue - 5/19/2014 11:19:36 PM

Hi,




Been doing polyester and glass products for a while now but new to carbon and infusion, having a few issues which you guys hopefully can help me with.

Following pictures have been taken in different light and angles to shoe the problem, which I can only describe as voids!

Some details:

Mould is epoxy construction gelcoat+putty, infusion stack is 2 layers carbon 200g +2 glass mat 100g + 1 carbon 200g + peel ply +woven mesh + stretch bagging material. Have tried with a layer of clear gelcoat and without, with gelcoat are the voids you can see on the pictures without and leaves gaps between strands of carbon without resin. Vacuum is good, no leaks and all product procedures are followed.

Here are the pictures 




What is going on here in your option?




Thanks




Chris.
By andygtt - 5/22/2014 6:46:21 AM

I use pro finish extensively and rarely have voids now... I have had them similar to the pics above but it has always been when I havnt got the cloth laid in the mould perfectly which is quite easy to do.

I use spray tack to secure the pro finish layer and spend more time on this layer making sure it's correct over the entire mould before I move to backing layers.