不同比例甲醇汽油对橡胶的溶胀影响研究

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研究了丁腈橡胶(NBR)、氟橡胶(FKM)及氢化丁腈橡胶(HNBR)等三种典型橡胶在不同比例甲醇汽油中的理化性能与机械性能变化,并与乙醇汽油体系的溶胀进行了对比研究。实验结果表明: NBR在不同甲醇比例的浸泡体系中,尺寸、质量及体积变化率均小于6%,且尺寸变化率最小,基本维持在3%以下;溶胀后NBR的机械性能下降显著。 FKM各项理化性能及机械性能在汽油中的变化均最小,在M30甲醇汽油体系中最大,且随着时间延长,其理化性能变化逐渐增大,而机械性能则无明显变化;在相同条件下, FKM的理化性能及机械性能变化
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