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In this paper, four kinds of polymethacrylates(PMAs) used as multifunctional additives were synthesized from quaternary C1—C14 methacrylate, among which sample 4 exhibited relatively better performance. According to the methacrylate ratio of sample 4, the optimized reaction conditions of PMA were explored by orthogonal experiments comprising 4 factors and 3 levels, and the optimized reaction conditions covered an initiator dosage of 0.8 %, a molecular weight regulator dosage of 0.4%, a reaction temperature of 95 ℃ and a reaction time of 8.5 h. When the optimized PMA samples were used to formulate the 75W/90 automotive gear base oil, they exhibited improved shear stability and good low temperature property. In comparison with foreign commercial polymethacrylate GP, the optimized PMA samples exhibited better thickening ability, similar shear stability and slightly weak low temperature property, with their performance being the same as GP's on the whole. The slight difference in the performance between the optimized PMA and GP was attributed to the difference of chain length of copolymers and the distribution of relative molecular mass between them. 相似文献
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叙述了用于直9飞机的WZ-8发动机润滑系统的设计特点和4106号合成航空润滑油在WZ-8发动机上的试验情况。 相似文献
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叙述了压缩天然气(CNG)和液化石油气(LPG)作燃气汽车燃料的优势。简要介绍了燃气汽车及其发动机润滑油国内外状况和发展趋势。随着人们对赖以生存的环境要求日益强烈,燃气汽车将愈来愈得到广泛地应用,能满足燃气汽车发动机特殊要求的专用发动机润油油也将得到不断发展和完善。 相似文献
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基于大量有代表性的样本,采集其近红外光谱,结合化学计量学方法建立了预测加氢裂化尾油和基础油馏程、黏度、黏度指数和倾点的近红外分析模型,模型交互验证结果表明,近红外方法与实验室标准方法之间具有良好的一致性。通过配置在线近红外分析系统和应用所建加氢裂化尾油和基础油多性质近红外分析模型,将在线近红外光谱分析技术应用于润滑油加氢异构装置,对加氢裂化尾油和基础油进行在线分析,可在30 min内完成对6路物料馏程、黏度、黏度指数和倾点的在线分析。加氢裂化尾油初馏点和终馏点的预测标准偏差分别为7和6 ℃,100 ℃黏度为0.261 mm2/s,黏度指数为2;基础油初馏点和终馏点的预测标准偏差分别为5和6 ℃,40和100 ℃黏度分别为1.01、0.151 mm2/s,倾点为3 ℃,黏度指数为1,满足工业现场快速分析的需求。 相似文献
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Regeneration of Used Lubricating Oils 总被引:2,自引:0,他引:2
V. V. Ostrikov G. D. Matytsin S. A. Nagornov 《Chemical and Petroleum Engineering》2002,38(3-4):138-142
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对黄青线蜡油及高酸DAR BLEND油输送技术进行研究,找出了含海底管线的长输管道输送蜡油及高酸DAR BLEND油的关键技术和显著特征,并结合实际输送情况进行分析,确保蜡油及高酸DAR BLEND油的安全输送。 相似文献
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