VER and carbon...

General Composites Discussions Composites Talk
#1

If vinyl ester is an esterized epoxy, and carbon fiber is only sized for epoxy, why doesn’t the VE bond to it well?

#2

I often use Reichold VE for infusion and it bonds perfectly to Carbon Fiber.

Are you properly post curing your parts after room cure?

#3

I’ve never done any carbon. Just glass. Gearing up to mess with it now.

#4

Your question was posed as if you’d experianced issues.

#5

Lol, no… I’ve just read all over this site that it is ok for cosmetic but not structural.

#6

There are several sizings (coatings) which can be applied on carbon fiber. This is done by the fiber manufacturer. The coating acts as a lubricant during weaving, and improves the bond to resins.

Toray at least has different sizings, suitable for either polyester, vinylester or epoxy.

I would need to see if I can find a datasheet.

#7

Here it is.

#8

Thanks Herman, good stuff

#9

Looks like #5 and F are Toray’s designated VER sizings. ( pointing out the obvious),lol.

#10

My supplier carries F0E carbon for vinylester. Results seem better than with 50C