2.2. Preparation of NR compounds and NR vulcanizates
The compound formulations are given in Table 1. The
conventional fillers used in this experiment were carbon
black (N330) and precipitated silica (Hisil-233). The samples
were designated as gum, C6, CB6, CB14, S6, S35. The letters
‘C’, ‘CB’ and ‘S’ refer to clay, carbon black and silica, respec