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研究了氯丁橡胶(CR)并用天然橡胶(NR)后的性能.结果表明,CR并用NR后,并用胶硫化速度加快,硫化曲线平坦性较好;随着NR并用量的增大,拉伸强度小幅上升,耐低温性能得到明显改善;NR并用量在30份以内,并用胶仍然具有优异的耐臭氧性和耐热氧老化性;当CR/NR并用比为70/30时,并用胶综合性能较好,用其制备的橡胶支座受热氧老化后水平刚度稳定性较好;与常规NR支座相比,并用胶刚度变化率低50％.“,”The properties of CR/NR blend was researched. The results showed that the curing speed became fast after CR blended NR, the flatness of curing curve was good. The tensile strength increased slightly with the increase of NR content, the low temperature resistance was obviously improved. The blend had the excellent ozone resistance and thermal oxygen aging resistance when NR content was not more than 30 phr. The comprehensive performance of the blend was good when CR/NR blending rate was 70/30, the stability of horizontal rigidity of the rubber legs was good after thermal oxygen aging.Compared with conventional NR legs, the change ratio of rigidity of the blend was less than 50％.