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- VI viscosity index 粘度指数
- Viscosity Index(VI) An arbitary scale used to show the relative magnitude of viscosity changes with temperature. 粘度指数（VI）表明粘度随温度变化相对程度的经验量值。粘度指数越高的油品，其粘度随温度的变化量就越小。
- Viscosity index(VI) An arbitary scale used to show the relative magnitude Of viscosity changes with temperature. Higher VI oils have less change in viscosity with temperature. 粘度指数(VI)表明粘度随温度变化相对程度的经验量值。粘度指数越高的油品,其粘度随温度的变化量就越小。
- Viscosity Index(V1) An arbitary scale to show the relative magnitude of viscosity changes with temperature. Higher VI oils have less change in viscosity with temperature. 运动粘度表明一种流体抵抗流动或者说是内部摩擦的能力的度量值。运动粘度会随温度变化而变化，因此，在给出运动粘度的数值时，通常必须注明其测试温度。
- The high temperature detergency of the engine oil was worse after adding the viscosity index improve... 而在油品中加入粘度指数改进剂会使油品的高温清净性变差,非分散型粘度指数改进剂的负面影响更大。
- Made of high viscosity index and deeply refining base oil, import composited agent,and the ceramic composite of lubrication factor. 采用深度精制高粘度指数基础油和进口复合剂，复合陶瓷合金润滑因子调制而成。
- Among them, the mild hydrotreating process is capable of both enhancing viscosity index and improving oxidation stability of the oils. 其中润滑油缓和加氢处理工艺既能适当提高油品的粘度指数,又能改善其氧化安定性。
- The hydrocracking tail oil possesses the characteristics of higher viscosity index,pour point,viscosity and lower sulfur,nitrogen,impurity content. 加氢裂化尾油粘度指数高,低硫、低氮、杂质含量少,倾点和粘度偏高。
- Finally, selection methods of viscosity index improver through diesel jet nozzleand long time FZG experiments has been suggested. 提出筛选粘度指数改进剂要经过柴油喷嘴和长时间FZG测试的建议。
- Two kinds of product standards of OCP viscosity index improver constituted separately by SINOPEC and PetroChina in different ages are compared. 对中国石化和中国石油两大集团公司在不同时代所制定的两个乙丙共聚物粘度指数改进剂产品标准做了比较说明。
- The studies on producing high viscosity index (HVI) lube base oils from nonlube crudes by hydroprocessing were presented. 介绍加氢工艺技术对非润滑油型原油生产高粘度指数基础油的探讨。
- Through this method, the base oil yield is over 45 %, and viscosity index is 100.It contains low sulfur, low nitrogen and low aromatics. 用此种方法所得到的基础油收率在45%25以上,粘度指数100,含硫、氮、芳烃等杂质较少,降凝效果较好,有良好的工业应用前景。
- The effects of base oil and viscosity index improver on high temperature detergency of lube oils were studied by the test method of coke forming plate or paint forming plate. 用成焦板(或成漆板)试验法考察了基础油及粘度指数改进剂对润滑油高温清净性的影响。结果表明,基础油的粘度和粘度指数改进剂对油品的高温清净性有很大影响;
- And as the protein content and temperature increase, its apparent viscosity decreases, structural viscosity index increases, and spinnability deteriorates. 随着大豆蛋白含量和温度的升高，共混流体表观粘度降低，结构粘度指数增大，可纺性变差；
- Daqing crude oil production using a high viscosity index base oil and 25 oil-based transformer oil, add antioxidant, anti-rust additives, such as by modulation. 采用大庆原油生产的高粘度指数基础油和25号变压器油为基础油，加入抗氧、防锈等多种添加剂调制而成。
- A solvent extraction method for determinating ethylene/propylene copolymer content in OCP type viscosity index improver was introduced. The analytical results indicated that the method was simple, convenient, rapid and accurate. 介绍一种用溶剂抽提法对T611等OCP型粘度指数改进剂中乙丙共聚物含量的测定方法，结果表明该方法操作简便、快速准确
- This result does not agree with the equations developed by Kraemer or Huggins, which have been widely used now for describing the changes of the oil viscosity with the added viscosity index improvers. 而目前常用的描述粘度指数改进剂对油品粘度影响的Kraemer和Huggins方程 ,在粘度指数改进剂添加量一定时 ,所显示的是一无截距的直线方程 ,与试验结果不完全一致。
- The ideal additives for industrial gear oil in cold area should be comprised of improver of viscosity index, pour point depressant, S-P extreme pressure wear inhibitor and benzo-triazole fatty amine. 寒区工业齿轮油理想添加剂应由粘度指数改进剂、降凝剂、S-P型极压抗磨剂、酚型抗氧剂及苯三唑脂肪胺盐等组成。
- In particular, 125N fraction has little evaporation loss, good low temperature-cranking viscosity, higher viscosity index, and it is choiceness base oil for top grade and wide span engine oils. 特别是125N馏分，蒸发损失小，低温粘度好，粘度指数高，是调制高档、大跨度内燃机油的优良基础油。
- When the viscosity indexes of both polymers are greater than one, the viscosity of mixture calculated from viscosity additivity is lesser than that calculated from concentration additivity. 当二元体系的浓度指数都大于1时，粘度加和法得到的结果小于浓度加和法。
