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

Table 2

Effects of radiation dose on the volume swelling and the molecular weight between crosslinks of BR/NR blends.

Sample (kGy)			Mc (g/mol)
	Without aging	With aging	Without aging	With aging
45	11.89	5.88	29146	8788
90	9.05	5.11	18307	6922
135	7.27	4.27	12618	5118
180	5.23	3.32	7206	3347
225	5.03	3.58	6747	3808