• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>TriboTest >Studies of lubricating oil base stock: characterisation and composition
【24h】

Studies of lubricating oil base stock: characterisation and composition

机译：润滑油基础油的研究：表征和组成

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A lubricating oil base stock, Inter Neutral type, boiling range 282-562℃, was fractionated into three boiling ranges of 282-456, 456-492, and 492-562℃. The waxes were isolated from the parent base stock and its fractions by solvent dewaxing. Hydrocarbon-type constituents, i.e., saturates, naphthenic aromatics, and polar aromatics, were separated by elution chromatography and were characterised for their physical properties. The viscosity-temperature behaviour of the base stock sample and its various fractions and components, i.e., dewaxed oil, extracted waxes, saturates, naphthenic aromatics, and polar aromatics, was determined and correlated with the composition. It was found that the concentration, nature, and type of hydrocarbon components present greatly influenced the physical properties as well as the viscosity-temperature behaviour. The average chain lengths of the waxes obtained by ~1H NMR match well with those determined by gas chromatography.
机译：将中性沸点为282-562℃的润滑油基础油分为三个沸点范围282-456、456-492和492-562℃。通过溶剂脱蜡从母体基础油料及其馏分中分离出蜡。用洗脱色谱法分离烃类成分，即饱和物，环烷芳烃和极性芳烃，并对其物理性质进行表征。确定了基础油料样品及其各种馏分和组分（即脱蜡油，萃取蜡，饱和油，环烷烃和极性芳烃）的粘度-温度行为，并将其与组成相关联。发现存在的烃组分的浓度，性质和类型极大地影响了物理性质以及粘度-温度行为。通过〜1H NMR获得的蜡的平均链长与通过气相色谱法测得的平均链长非常匹配。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号