氯醚橡胶/NBR并用胶的性能研究

Study on ECO/NBR blends

研究了不同并用比的氯醚橡胶 (ECO)与NBR 2 6 ,NBR 33和NBR 41并用胶的力学性能、耐老化性能和耐油性能。结果表明 ,NBR 2 6 ,NBR 33和NBR 41的用量在 10～ 40份的范围内 ,对胶料的拉伸强度和扯断伸长率的影响不大 ;随着NBR 2 6的用量增大 ,硫化胶在油中的体积变化率增大 ,而且在 10 0℃油中的体积变化率尤为明显 ;随着NBR 33的用量增大 ,硫化胶在 10 0℃油中的体积变化率呈上升的趋势 ;随着NBR 41的用量增大 ,硫化胶在 10 0℃油中的体积变化率明显下降。

The mechanical properties,heat aging properties and oil resistance of ECO/NBR 26,ECO/NBR 33 and ECO/NBR 41 with different blending ratios were investigated.The results showed that the tensile strength and elongation at break of the blend changed little when 10～40 phr of NBR 26,NBR 33 or NBR 41 were used;the volume swell of the blend vulcanizate in oil,particularly in oil at 100 ℃ increased as the proportion of NBR 26 or NBR 33 in the blend increased;and the volume swell of the blend vulcanizate in oil at 100 ℃ decreased significantly as the proportion of NBR 41 in the blend increased.