Rubber electrical insulation

The type of investigations and publications in 1944 bears a striking contrast to those in 1943. The chief problem of the whole rubber industry in 1943 was one of supply and of conversion from natural to synthetic rubber products. At the beginning of 1944, the wire and cable industry had completed its conversion replacing natural rubber chiefly with Buna S or GR-S. The primary stage having been successfully passed, attention was turned to more intricate improvements in the compounding and processing of GR-S for electrical insulation, the development of a wider variety of GR-S insulating compounds, and the investigation of newly developed synthetic rubbers and compounding ingredients.