Direct microwave heating has some advantages against indirect resistive heating. In case of microwave heating the electromagnetic waves are absorbed in the material by the so called polarization losses. So, there is appreciable energy saving. Details about silicone curing using microwave can be found in the paper in the linkhttp://pubs.acs.org/doi/abs/10.1021/bk-1979-0107.ch005;
An other aspect of the microwave curing of rubber can be found by following the link: