Flexible core material options for prepreg


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U.S.U.L
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Hi.

Which light weight flexible core material(nomex, 3d core pet, soric, etc) would you recommend(3-5mm) for ooa low temperature prepreg part(light weight monocoque)? I plan to use 2/2 twill 3K carbonan for outer layers + 6K inner layer and a core inside.
Would the core material require any adhesives or is it as simple as laying it on top of inner layer and proceed with second inner layer, outer layer then bagging and vacuum curing the whole thing at 1 shot? 
Edited 7 Years Ago by U.S.U.L
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f1rob
f1rob
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U.S.U.L - 4/25/2018 6:36:08 PM
It is an 
"aerospace" project. The priority is axial stiffness and low weight of course.

Is the film glue a necesity? I have seen some examples there the core is just placed between uncured prepreg carbon layers.
Any idea where i could find any guidelines or similar build logs?

Mtm28b is core bondable., there are others
That's the only one I can think of off the top of my head and that is an old school resin bath an roller pre preg.
All the new OOA systems are hot rolled so all your resin is as far from your core as it's possible to get
Make some samples and do some peel tests.
You'll soon see how well things stick without film glue.!
Seen LOTS of stuff on YouTube but it's mostly from idiots who haven't got a clue
For core you really want a supported film glue rather than in supported
Thin nomex you will get away with 150gm
Not that heavy

GO

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