SF6 epoxy foam a novel electrical insulation material

A novel method has been developed to produce sulfur hexafluoride (SF
6
) epoxy foam. This material consists of the highly electronegative SF
6
gas trapped in closed epoxy cells. In order to assure that the material retained the unique properties attributed to SF
6
, changes in SF
6
content as a function of thermal aging were measured via Neutron Activation Analysis. Provided the materials tested were maintained below their glass transition temperatures, the results indicated SF
6
was retained.