摘要
低黏度基础油是影响与橡胶相容性的重要因素。对氢化丁腈胶与低黏度的石蜡基油,环烷基油,聚α-烯烃和合成酯的相容性进行了考察。通过测试氢化丁腈胶在基础油中浸泡后的体积与硬度来评价氢化丁腈胶与基础油的相容性。氢化丁腈胶的体积与硬度变化越大,相容性越差。氢化丁腈胶浸泡168 h后(100℃),在石蜡基油中,氢化丁腈胶的体积膨胀0.035%,硬度下降2.5 IRHD;在环烷基油中,体积膨胀0.187%,硬度下降5.7 IRHD;在聚α-烯烃中,体积膨胀0.033%,硬度下降2.4 IRHD;在合成酯中,体积膨胀0.362%,硬度下降9.8 IRHD,均出现体积膨胀和硬度下降。延长浸泡时间至1200 h也表现出相似的结果。相比之下,石蜡基油和聚α-烯烃与氢化丁腈胶的相容性较好,环烷基油与氢化丁腈橡胶的相容性稍次,合成酯与氢化丁腈橡胶的相容性较差。
Low viscosity Stocks were important factors affecting rubber compatibilities.The compatibilities of hydrogenated nitrile butadiene rubber with low viscosity paraffinic Stock, with naphthenic oil,with poly-α-olefin and with synthetic ester were investigated.The compatibilities of the hydrogenated nitrile butadiene rubber with the Stocks were evaluated by testing the volume and hardness of the hydrogenated nitrile butadiene rubber after soaking in the Stocks.The larger the volume and hardness of hydrogenated nitrile butadiene rubber was, the worse the com- patibility was.After Hydrogenated nitrile butadiene rubber soaked for 168 h （100 ℃ ）, the volume expansion of hy- drogenated nitrile butadiene rubber was 0.035% and the hardness decreased by 2.5 IRHD in the paraffin base oil; the swelling rate was 0.187% and the hardness decreased by 5.7 IRHD in the naphthenic oil;the volume expansion of 0.033% ,the hardness decreased 2.4 IRHD in poly-α-olefin;in the synthetic ester the volume expansion of 0.362%,hardness decreased 9.8 IRHD.There were all volume expansion and hardness decreased.Prolonged soak- ing time to 1200 h also showed similar results.In contrast,the compatibilities of hydrogenated nitrile butadiene rubber with paraffin base oil and poly-α-olefin were better, the compatibility of naphthenic oil with hydrogenated nitrile butadiene rubber was slightly worse, the compatibility of synthetic ester with hydrogenated nitrile butadiene rubber was poorest.
出处
《合成润滑材料》
CAS
2017年第2期18-20,共3页
Synthetic Lubricants
关键词
氢化丁腈胶
相容性
低黏度基础油
硬度
体积
hydrogenated nitrile butadiene rubber
compatibility
low viscosity Stocks
hardness
volume
