Determination of Dynamic Mechanical Properties on Addition of Carbon Black-Nanosilica Hybrid Fillers in NR-SBR Blends with Special Reference to Power Transmission Belt Applications

Table 2

Various formulations used for the preparation of samples.

		Controlled	NS1	NS2	NS3
Sl. no	Material	phr^a	phr	phr	phr
1	ISNR 20	50	50	50	50
2	SBR 1502	50	50	50	50
3	Zinc oxide	4.2	4.2	4.2	4.2
4	Stearic acid	0.5	0.5	0.5	0.5
5	2,2,4-Trimethyl-1,2-dihydroquinoline (TDQ)	1	1	1	1
6	Carbon black N 550	75	50	50	50
7	Zeosil 1165 MP-nanosilica	0	5	10	15
8	Processing aids^b	13	13	13	13
9	Cure package^c	5.5	5.5	5.5	5.5

^aphr: parts per hundred part of rubber. ^bProcessing aids include aromatic oil and wood rosin. ^cCure package includes sulphur, N-cyclohexyl-2-benzothiazole sulfenamide, and tetramethylthiuram disulfide.