工程机械润滑剂的正确选用

本文概述了工程机械润滑的重要性,分析了工程机械润滑的特点,着重介绍了工程机械润滑剂的正确选用,并对进口工程机械的润滑剂如何选用、代用国产油品问题作了说明。     

PPS基固体自润滑复合材料研究的发展现状

随着现代工业技术工况越来越复杂,对聚合物基复合材料在的要求越来越高。在分析固体润滑机理的基础上,综述了国内外关于PPS基固体自润滑耐磨复合材料的研究现状,并展望PPS基固体自润滑耐磨复合材料的发展方向。     

Production, recovery and applications of xanthan gum by Xanthomonas campestris

Xanthan gum is a water-soluble exo-polysaccharide. It is produced industrially from carbon sources by fermentation using the gram-negative bacterium Xanthomonas campestris. There have been various attempts to produce xanthan gum by fermentation method using bacteria and yeast by using various cheap raw materials. This review explains the recent methods of production, recovery and applications of various industries such as food, agriculture, oil, paint and cosmetics.     

Quantitative structure-properties relationship,molecular dynamic simulations and designs of some novel lubricant additives

Quantitative structure-properties relationship (QSPR) method was used to design some novel antioxidant lubricant additives, while molecular dynamics simulations were used to calculate their dynamic binding energies on steel and to hydrogen-containing DLC (a-C: H) crystal surfaces. 29 synthesized antioxidant lubricant additives were collected from literature and geometrically optimized by Spartan’14 version 1.1.2 software while Genetic Function Algorithm (GFA) method of the material studio version 8.0 software was used to build the predictive QSPR model. Four novel antioxidant lubricant additives were successfully designed out of which E)-3-(4-((3-amino-4-methylphenyl)diazenyl)-5-hydroxy-4H-pyrazol-3-yl)-2-argio-6,7-difluoroquinazolin-4(3H)-one with excellent property of 3.531295 (KOH/g) was found to be better than the one reported by other researchers. The dynamic binding energy results revealed that one of the designed additives was excellently bound to steel (?1120.11 kcal/mol) and to hydrogen-containing DLC (a-C: H) crystals surface (7814.156 kcal/mol) surfaces than its co-additives. This investigation shows that the entire studied antioxidant lubricant additive was found to be better bound to the steel surface than hydrogen-containing DLC (a-C: H) crystals surface. This study will help in synthesizing novel anti-oxidant lubricant additives with better additive properties that will slow the tendency of oil to oxidize and will not possess a threat to the environment as the structures do not contain zinc and phosphorus that could limit the operation of the catalytic converter in the exhaust pipe.     

An analysis of used lubricant recycling unit in Turkey

In chemical industries such as lube oil recycling units, stakeholders seek to continuously increase the productivity and profitability of the chemical processes to survive in the market. While scholars have investigated technological production options, recycling, and lube oil recycling flows, there is not enough study that evaluates the interplay between the production volume allocation and the recycled oil quality and quantity contingent upon the process temperature and pressure. The results based on a case study in the Kayalar Dorse production in Turkey show that by optimizing the chemical process mix, the volume of the lubricant oil can be increased by 20% at almost zero variable cost increase.     

A review of corrosion inhibitors for rust preventative fluids

Corrosion of metals has been a widespread issue in industries for centuries. The use of corrosion inhibitors in rust preventative fluids are commonly employed to provide the temporary corrosion protection to metals. The aim of this review is to summarize the rust inhibition properties, inhibition mechanism, chemistry and development of corrosion inhibitors for rust preventative fluids. Some suggestions for further research on corrosion inhibitors have also been discussed.     

论水溶性润滑添加剂的研究方法

在已知的油溶性润滑添加剂分子中，引入水溶性基团，可以改性成水溶性润滑添加剂，在一个分子中同时包含水溶性、吸附性、疏水性、反应性基团，是合成兼有油性剂和极压剂功能的高效水溶性润滑添加剂的方法。     

高温高速行车试验中油品运动粘度与磷谱分析相关性的研究

通过高速行车试验中油品的40℃运动粘度和磷谱分析结果的讨论。发现两者具有很好的相关性。对油品中ZDDP的有效组分衰变分析，可以很好地预测油品的粘度增长趋势。P核磁共振仪是研究高温高速行车试验发动机油品质的一种很好的辅助工具。使用二类基础油及复合添加剂调制的油品，即使PS2O2含量已经接近0，油中PSO3含量下降仍然很慢，在使用二类基础油及复合添加剂调制的油品中，ZDDP的表面如此优良值得继续深入研究。     

双分散型两相润滑剂的润滑性能及机理的研究

本文研究了二氧化硅和石墨或MCA粒子双分散型两相(液—固)润滑剂的摩擦磨损特性,这种双分散型的两相润滑剂的抗磨性能均较基础油为优。其中二氧化硅和石墨双分散型的几种油样的抗磨性能极其近似,说明抗磨性能与粒子含量无关。其摩擦系数随载荷的提高而显著下降,但达到一定的临界载荷值后,又趋于平稳,根据这些实验现象,笔者着重研究了双分散型润滑剂不同种粒子的协同作用方式,建立了相应的物理模型,并以此模型来分析实验现象产生的机理。     

铝冷轧乳化液的特性

探讨了铝冷轧乳化液在润滑性、退火清净性和热分离性等方面的特殊性能要求，提出了该乳化液配方研究应遵循的原则。