硫化异丁烯在酯类合成油中的摩擦学特性

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In order to study the tribological characteristics of vulcanization isobutylene additives in the neopentyl polyol ester （NPE） or the trimellitate （TMT） ,the maximum non-seizure load and weld point of NPE or TMT base oil with different content of vulcanization isobutylene（3321 ） and the wear scar diameter of steel ball were investigated by the four ball test machine. The appearance of abrasive scar on steel ball was observed with the electron microscope （ SEM）, and the lubrication mechanism of vulcanization isobutylene was analyzed. The results show that the additive 3321 in NPE shows excellent sensitivity and compatibility than that in TMT. The boundary lubrication ability of 3321 in NPE is better than that in TMT. The antiwear ability of 3321 in TMT is better than that in NPE.为探讨硫化异丁烯在新戊基多元醇酯和偏苯三酸酯中的摩擦学特性，在四球试验机上考察不同硫化异丁烯含量的新戊基多元醇酯和偏苯三酸酯基础油的最大无卡咬负荷、烧结负荷和磨斑直径，并用扫描电镜（SEM）观察钢球磨痕形貌，分析硫化异丁烯的润滑机制。结果表明：新戊基多元醇酯对硫化异丁烯添加剂的感受性、配伍性优于偏苯三酸酯；T321在新戊基多元醇酯中比在偏苯三酸酯中有着更好的边界润滑能力；硫化异丁烯在偏苯三酸酯中的抗磨损能力优于新戊基多元醇酯。