Question about foam

[StRaNgEdAyS]

hey there composite gurus.
This is a question posed on a mailing list I get, and I thought I'd post it up here for some discussion.

After much time spent on the foam issue decided to ask for helping to all of you. Here in my country (Europe) the only available foam for me is Dow blue extruded Styrofoam. It has a VERY-VERY small cell structure and I am not sure if I could use such kind of foam in wing construction since I am afraid about delaminating. I had seen many types of foam used by all of you (on your sites), some of you seems to use such kind, but I am not sure. There is no question about other type of foam with relative large cell (1-2mm), just fill the cell with micro and the laminate. How in case of tight cell, the epoxy is not absorbed at all by my foam, so the laminate Is just glued on. But on the specimens I had done it is very easy to tear off the laminated fiberglass.
May be I am not right, may be in a large an closed structure as wind is every thing will be OK?

It's an interesting problem, no doubt one I will have to deal with myself soon enough.

 

[George Sychrovsky]

 

[orion]

 

[StRaNgEdAyS]