Improving the Thermal Aging Resistance of γ-Vulcanized Polybutadiene Rubber (BR)/Nature Rubber (NR) Blends with Sulfur Added

Table 1

The formulation of BR/NR blends.

No.	Polybutadiene rubber (phr)	Nature rubber (phr)	Sulfur (phr)	Set (kGy)	Thermal aging
1#	70	30	2	45	No
2#				90	No
3#				145	No
4#				180	No
5#				225	No
6#				45	Yes
7#				90	Yes
8#				145	Yes
9#				180	Yes
10#				225	Yes