Epoxy attack XPS foam

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#1

Up to where I know epoxy shouldn’t attack XPS foam, but unfortunately I have seen that it’s not completely true, when I have infused parts with XPS foam I can see that it attacks XPS, especially over sections where resin flow is bigger. I suppose that resin have a bit of some solvent type, then, What type of resin would I use for XPS parts?

Thanks

#2

I would bet that you suffered an exothern reaction that burned away the eps. I suffered that…

#3

Infusion epoxy will not attack the XPS. Maybe you have an exothermic reaction like written before or the XPS collapsed by the vacuum.

#4

Hi thanks for the reply, but do I not think that problem is caused for heat, I hadn’t feel heat, nothing to be able to feel with my hand, I have very infused small thickness, using resin infusion with pot live more than 2 hours, at room temperature below 18 ° C and I always have these problems.
Some pics here:

This angle should be 45 °, but narrower edge disappeared.

http://www.subirimagenes.com/otros-img20140905212806554-9062480.html

In these parts, where the resin is propagated only by the foam (resin thickness ridiculous here), and yet some foam disappeared…

http://www.subirimagenes.com/fotos-img20140906122145476-9062482.html
http://www.subirimagenes.com/fotos-img20140906122154337-9062483.html
How could I avoid?

Thanks