The results showed that the reversion was reduced obviously while the elastic and heat build-up of the compound after overcuring were improved,the tear strength and abrasion resistance were enhanced.

• 结果表明 ,PK -90 0可以明显降低硫化返原现象 ,并改善过硫后胶料的弹性、生热 ,提高撕裂强度及耐磨性能。