Subject: CPES and 3M's 5200
Date: Thu, 27 Jul 2000
I've decided to use CPES on my white oak frames. I'm using 5200 as a
bedding compound/adhesive. Please tell me, does the CPES form a chemical link
with the 5200. Or can I apply the CPES and then apply the 5200 after curing.
Thanx for your attention.
We have tested on new wood the compatibility of CPES and 5200. It
sticks, and very well, to the point where you can't tear it off the wood
(the 5200 comes apart before it separates from the wood). We tested it
on cured CPES and CPES that had volatilized away the carrier solvents
but with the epoxy still "tacky". It stuck just as well to the uncured
epoxy as it did to the cured epoxy, maybe better. Not being a polymer
chemist I am not qualified to say that there is any polymer bond, but I
have heard through the grapevine that the epoxy in CPES will form
polymer links with urethanes.
So there you are. Whatever the CPES and the 5200 does, for sure it
sticks like hell. Use the combination with confidence that you are
giving the wood maximum protection.