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, respectively. The number followed the letters indicates the amount
of filler in phr. The gum sample was prepared for comparing