EPDM was mixed with Na-MMT or the OMMTs for 5 min, which was followed by addition of 5 phr zinc oxide, 1 phr stearic acid, 1.8 phr sulfur, and 1.5 phr PZ and the mixing lasted for another 5 min
EPDM was mixed with Na-MMT or the OMMTs for 5min, which was followed by addition of 5 phr zinc oxide,1 phr stearic acid, 1.8 phr sulfur, and 1.5 phr PZ and themixing lasted for another 5 min