Variable frequency microwave (VFM) curing was investigated as a means of ra
pid curing of two photosensitive polyimides. The properties of two polymers
, PI 2734 and Ultradel 7501, cured by convective heating and VFM curing wer
e compared. The results of this study indicate that rapid VFM curing of the
se polymers is feasible. Complete imidization was possible. The most signif
icant differences in properties between VFM and thermally cured films were
in the electrical properties due to the slow evolution of chemical products
.