The Effect of Carbon Black on the Glass Transition Temperature of Rubbers Based on Frost-Resistant Rubbers of a New Generation

Abstract

The effect of carbon black (CB) on the glass transition temperature Tg of rubbers: hydrogenated BNR (HBNR), epichlorohydrin (ECH), propylene oxide (PO) and a number of others was studied. Tg was determined by differential scanning calorimetry (DSC) on a DSC 204 F1 device (Netzsch, Germany). Low Tg have ECH and PO (–64,7 and –57,1 °C respectively). The viscosity of rubbers was also determined by Mooney. The Tg and conditional strength fр were measured for all the studied rubbers. The values of Tg and fр of filled and unfilled rubbers, as well as the torque Mн of rubber compounds, were compared. It is shown that the effect of CB on the Tg is insignificant, and the fр of the filled ones vary greatly. The prospects of using ECH are noted. It is assumed that the difference in Mн for filled mixtures will allow you to choose rubbers of better resistance to aggressive media.