Talk Composites - The Forum for Advanced Composites

GC50 Epoxy does not stick to EL160 High Temp Laminating Resin ! What now?

http://www.talkcomposites.com/Topic25259.aspx

By geedee - 2/25/2018 10:24:09 PM

Hi All,

I'm a beginner in Composite World.

I created a mould from a bonnet from a reacecar.


So far, so good.

Next step was to create a carbon fibre bonnet.
First I used several coats of easy lease Chemical Release agent on the mould.
Then, I did one layer of GC50 Epoxy Compatible Gelcoat. I used 2% MEKP hardener, maybe a little more.
Then, I did One layer of 200gr Carbon Fibre, 2mm Lantor Soric core material, and then again a layer of 200gr Carbon Fibre.



Next was all necessary thing for vacuum bagging., as shown below;.



The day after I removed the peel ply, and took the bonnet out of the mould.



But then I saw the GC50 did not stick to the EL160 resin. I could peel it all off !!



Which resulted in this on the floor !







this leave me with a bonnet with a very wavy surface !





Question1 : What did I do wrong?
Question2 : How can I repair this?

Thanks,

Gerry.
By Warren (Staff) - 5/14/2018 4:16:10 PM

Hi GeeDee,  glad it all turned out ok in the end.