镍系充油BR的基本性能试验研究

对镍系充油ＢＲ的基本性能和实用性能进行了系列研究。结果表明，齐鲁镍系充油ＢＲ（ＯＥＢＲ）与日本某公司镍系充油ＢＲ（ＢＲ３１）和日本某公司钴系充油ＢＲ（ＢＲ１４４１）相比，微观结构基本相同，但ＯＥＢＲ具有相对分子质量较大、凝胶或支化程度较低的特点；加工性能相近；硫化胶静态力学性能中的拉伸强度、抗疲劳性、回弹性、生热等性能优于ＢＲ３１而与ＢＲ１４４１相当。由动态力学性能试验结果预测的轮胎胎面胶特性中，ＯＥＢＲ抗湿滑性与ＢＲ３１和ＢＲ１４４１相似，但滚动阻力低于ＢＲ１４４１，更低于ＢＲ３１。与非充油国产镍系ＢＲ相比，充油ＢＲ的加工性能和硫化胶拉伸性能、耐磨性等基本相近，动态模量、抗湿滑性、牵引性、耐臭氧老化性较好，生热较低，但抗疲劳性稍差。

Experimental Study on Basic Properties of Oil-extended Ni-BRs

A series studies were made on the basic and practical properties of oil extended Ni BRs and the oil extended Ni BR(OEBR) from Qilu Petrochemical Co. was compared to the oil extended Ni BR(BR31) and the oil extended Co BR(BR1441) from Japan.The results showed that the microstructure and processibility of three BRs were similar;OEBR featured higher molecular weight,lower gel content and less branching;the tensile strength,fatigue properties,resilience and heat build up of OEBR were better than those of BR31 and similar to those of BR1441;the wet skid resistance of OEBR was similar to that of BR31 and BR1441,but its rolling resistance was lower than that of BR1441 and much lower than that of BR31.OEBR gave similar processibility,tensile strength and wear resistance,better dynamic modulus,wet skid resistance,traction,ozone resistance and heat build up,but poor fatigue properties when compared to nonoil extended Ni BR from China.