In order to improve the effect of antioxidant D on the thermal oxidative ageing properties of natural rubber (NR),antioxidant D of different purities are added in NR.

• 为了改善天然橡胶的热氧老化性能,试验了防老剂D提纯品和工业品对天然橡胶热氧老化性能的影响,测试了其热氧化诱导期、热失重、热老化的性能变化。