共查询到20条相似文献,搜索用时 156 毫秒
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润滑油系例中汽油机油、柴油机油、内燃机车柴油机油等,只有在基础油中加入一定种类和一定比例的添加剂后,其产品的质量才能达到较先进的水平。目前市场上进口的,国产的润滑油品牌很多,使用为了确保润滑油的使用质量,必须对润滑油进行质量检测。添加剂和含添加剂润滑油硫酸盐灰分的测定也是检测润滑油中是否加入添加剂的方法之一。 相似文献
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《大庆石油地质与开发》2007,26(3):75-75
中国石化润滑油分公司不断加大自主研发力度,加快科研新成果向市场的转化。2006年,在润滑油添加剂自有技术开发和工业化上取得重大突破,改变了中国润滑油添加剂长期以来依靠进口的局面。 相似文献
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《Egyptian Journal of Petroleum》2022,31(1):1-7
Eco-friendly synthesis of organic compounds is a major trend in green chemistry. Thus, we aim at producing some of the lube oil additives through the use of green chemistry. Dispersant lube oil additives are remarkable additives that regulate the formation of deposits throughout the process. Antioxidants do not prevent the oxidation reactions but only delay the rate of this process. In the present work, some additives for lube oil based on thiourea derivative were prepared by one-step reaction, which is the reaction of octadeca-7-enoy) chloride with ammonium thiocyanate in addition to different amines such as ethylenediamine, diethylene triamine, and tetraethylene pentamine as three-component system in order to prepare thioamide derivatives (A, B, and C). Infrared spectroscopy, elemental analysis, nuclear magnetic resonance, determination of molecular weights, and yield determination verified the chemical structure of all synthesized molecules. All the compounds produced are tested as lube oil additives (dispersants and antioxidants), and it has been found that all the compounds prepared are good as dispersants but have poor effect as antioxidants. The theoretical result is the same as the experimental result of antioxidants through the use of the quantum chemical calculations by calculating the energy gap (EHOMO-ELUMO). The best dispersant lube oil additive is (C). 相似文献
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光稳定剂在加氢裂化润滑油基础油中的应用研究 总被引:7,自引:0,他引:7
用IFP紫外光安定仪分别考察了苯并三唑型光稳定剂、受阻胺型光稳定剂、抗氧剂及其复配后对兰州炼油厂HVIWH12 5基础油抗紫外光吸收性能的影响。这 3种添加剂复配后的协合效应 ,解决了HVIWH12 5基础油的光不安定问题。还考察了柱层析 (除去极性化合物 )后的HVI WH12 5基础油加入上述 3种添加剂后的抗紫外光吸收性能 ,结果证明了加氢裂化润滑油基础油中的极性化合物是引起光不安定性的主要原因 相似文献
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以糠醛为溶剂,采用两段式串流溶剂精制工艺,对废润滑油进行精制回收研究。在总剂油比1.0、精制温度70℃的最佳工艺条件下,回收的润滑油的粘度指数为104.61、折光率为1.4594、色度为1.0,达到了润滑油基础油的HVI标准,加入适当添加剂后可作为成品油使用。 相似文献
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外商在华润滑油市场拓展业务的态势 总被引:1,自引:0,他引:1
叙述外国企业在华润滑油生产项目方面的投资和所具生产能力的情况及其产品所占市场的份额,指出车用润滑油和其它专业成品油是外商在华石油下游业务获利的重要来源,并在船用油和添加剂方面有计划地拓展业务;中国企业通过吸收国外技术增强了竞争实力,必须走引进、消化与创新之路;在未来的21世纪,外国企业以其在资本、技术、经验方面的优势将继续成为中国润滑油市场的竞争对手,建议我国加速开展高品质润滑油的研究及生产,力争国产润滑油在国内市场占有更多的份额 相似文献
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N. S. Ahmed A. M. Nassar R. M. Nasser M. E. Abdel Raouf A. F. El-Kafrawy 《Petroleum Science and Technology》2013,31(17):2115-2122
Twelve terpolymeric additives were prepared via free radical chain addition polymerization. The rheological properties of lube oil (SAE-30) were studied with and without additives. The prepared terpolymers have a good effect on the viscosity-temperature relationship. The flow curves and viscosity-shear rate curves of the prepared additives doped with lube oil were studied and it was found that they behave as Bingham fluids. The sensitivity of the prepared terpolymers to mechanical stresses was studied and it was found that the sensitivity increases with increasing the molecular weight of the prepared additives. 相似文献
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采用四球摩擦磨损试验机考察了表面修饰纳米铜添加剂(简称纳米Cu)和磷酸三甲酚酯(T306)单剂及两者复配体系的摩擦磨损性能,采用X射线光电子能谱仪(XPS)和扫描电子显微镜(SEM)对磨痕表面进行了分析。结果表明,纳米Cu具有良好的润滑性能;当其在一定浓度范围内与T306复合使用时,两者将产生协同抗磨减摩效应;且两者添加的质量分数各为0.5%时,复配体系的抗磨效果最佳。两者复合使用时,会在摩擦表面形成由单质Cu的沉积膜及FeS、SO4^2-和PO4^3-的化学反应膜组成的复合表面膜,产生了协同抗磨减摩作用。 相似文献