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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Lester Populaire - 5/18/2021 7:51:55 PM
The Mould Destroyer - 5/18/2021 4:33:12 PM
A quick update:



I did another test:
Changed Epoxy ratio from 100/60 to 100/50
4 variations:
2 400gm
2 200gm
one set in room temp (25)
one set on the 3d printer heated bad (55)

on the left is the heated one, on the right is the room temp

Heated one had a wood failor which is the optimal result, but there is a spot on the corner where the lamination failed, how weird is that

Anyway, The Epoxy is probably the problem doesn't cure well enough in room temp or something

Careful with your mixing ratio there. Epoxies require quite precisely measured ratios to fully polymerize. Unlike some other resins where the hardener is a catalyst that just starts a chain reaction within the monomer, in an epoxy you need both components to crosslink.
So stick as precisely as you can to the manufacturers instructions!

Yes of course, the 100/50 was recommended by the seller 

GO

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