Diolen epoxy lamination is first to fail in peel test


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The Mould Destroyer
The Mould Destroyer
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Hi,

I've laminate a sheet of the Diolen 200g black with 72h epoxy (1h work, bought from a local dealer)
the surface was a peel ply surface (the red line one you offer)


I have a specific project with a hard requirement that i need to glue the Diolen to birch baltic plywood.
I've created a test with multiple glues to try and set them up 
But never actually got to test the glues themselves because the surface of the laminated Diolen was the first one to fail, detaching from the wood leaving the peel ply surface on the wood and came out bare bone.

Now one reason can be the epoxy itself, which i think is less likely
The lamination process itself could be the problem? just a fabric on the table with some weight on it (flat object)

Can it be that Diolen does not bond to the epoxy very well?

* I've done a video of the process, posting it is a lot of work for me but if its crucial to figuring it out i will post it per request.

Will appreciate your help, i'm working on it for a long time and its currently a bust, i'm discouraged
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The Mould Destroyer
The Mould Destroyer
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Warren (Staff) - 5/20/2021 8:28:36 AM
Certainly I would Agree, go for a proper structural adhesive every time for bonding applications like this as the bond strength, especially for relatively small bonding surface areas, is much stronger.

If you were just bonding two large sheets together with only light structural expectations, then yes a resin over such a large surface area is probably strong enough.  But for smaller areas, a dedicated structural adhesive will out perform a laminating resin.

Thank you!
Just to clarify - the bonding is not the issue as is the laminated epoxy separating from the fabric
For bonding - I will preform a peel test on a lot of different glues to see which one will be the best

GO

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