In a message dated 98-01-27 09:38:32 EST, you write:

>
>  Now, does anyone have an experience or data on the effects of radiation on
>  silver-filled conductive epoxies? [Radiation exposure as in space
>  applications.]  The manufacturers of the epoxies say no effects.  Thanks in
>  advance for your help.

Sheila,
I did a paper on the effects of radiation on polymers many years ago for one
of my masters classes (never published).  The primary effect was chain
scission (or chain cutting) in the polymers, which decreased the strength of
thermoset materials, such as epoxies.  I would expect the same effect on
silver filled epoxy.  I would ask you the question of what kinds of radiation
(gamma, X-ray, neutrino) and in what intensity, and for what period of time.
I would suspect the manufacturers did not ask these questions before saying
that there was no effect.  Of course, they may have a new bulletproof
material, in which case, I know some people in Oak Ridge, Tennessee who would
love to talk to them........

Doug Pauls
CSL

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