Re: Anaerobic conductive epoxy?

"Simon Kay" <simon@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:dhceli$9ti$1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Don,
>
> Conductive 2-pack epoxies should cure fully even in the absence of air.
>
> Are you using a solvented epoxy? Many flooring system would have solvents
> added to assist flow - it could be this that is failing to evaporate.
>
> Also you will need to have an idea of the level of conductivity you
> require; carbon loaded materials tend to be low conductivity but
> reasonably cheap, whereas high conductivity materials - often loaded with
> silver, tin, nickel etc - can be astronomically, eye-wateringly,
> expensive.


Well, that's what I thought too. It seemed to me that mixing the two
components of an epoxy is precisely what would make it anaerobic. If it
uses air to dry, why would you need a second component?

This stuff I used is two-part (though, as you mentioned, maybe just to
assist flow). It's called StatCrete and comes as a gallon bucket of gray
component coupled with a little 16 oz. bottle of "catalyst", which is a
clear liquid. The term "catalyst" indicates to me that it might be a
hardener, but it sure didn't do much hardening without air. The part
between the sheets has been there for several months and is still rubbery
and doesn't conduct. The exposed part is hard as a rock and conducts fine.

Here's a spec:

http://www.perma.com/PDF/Spec%20fg0026.pdf

I see now that it's "water-based". Maybe that's the problem.

And, yes, I just need the semi-conductive type with graphite. Does anyone
know of another source for something better that isn't water-based?

Don



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