Table 2. Formulations of ESBR Silica WMB/BR Silica DMB Blend Compounds.

Unit: phr T-1 T-2 T-3 T-4 T-5 T-6 T-7
Step 1 ESBR silica WMB 156A
BR silica DMB 72B
40 MSF 3
ZEH 3
ZnO 3
Stearic acid 2
6PPD 1
Step 2 DPG 1.5 0.1 0.1 0.1 0.1 0.1 0.1
TBzTD 0 0 0.25 0.25 0.25 0.25 0.25
Sulfur 1.50 1.50 1.0 1.25 1.50 1.75 2.0
CBS 1.50 1.50 1.0 1.25 1.50 1.75 2.0
156 phr = ESBR 75 phr, 8 wt% TESPT modified silica 81 phr
72 phr = NdBR40 25 phr, 8 wt% TESPT modified silica 27 phr, TDAE oil 20 phr