化工学报Issue(10)：4123-4130,8.DOI:10.11949/j.issn.0438-1157.20150153
燃油碳烟颗粒的表面特性与润滑油黏度行为
Effect of surface properties of fuel soot particles on viscosity of lubricating oil
摘要
Abstract
It is inevitable for the soot particles from engine fuel to contaminate the lubricating oil, which may increase the viscosity of lubricating oil, and consequently influence the lubricity and usability of engine. In this paper, the surface properties of biomass fuel soot (BS) and diesel soot (DS) were contrastively investigated by means of Fourier infrared spectrometer, X-ray photoelectron spectroscopy, full-automatic micropore physisorption and chemisorption analyzer, optical contact angle/interface tension meter and Zeta potentiostat in order to study the effect of BS and DS particles on viscosity of liquid paraffin (LP, simulant of base oil for lubricating oil), and discuss the mechanism of influence of soot surface properties on the viscosity. Results showed that the relative viscosity increased by exponential function with increasing soot content at 40℃. The relative viscosity of oil contaminated by DS was higher than that of BS in case of the same soot contents. The oil contaminated with high concentration soot had the advantage of clearly identified shear thinning behavior, which was more severely in LP contaminated by DS. The main surface elements of BS and DS were carbon and oxygen. The surface oxygen content of DS was less than that of BS. There were some O-containing functional groups on the surfaces of BS and DS. The surface property analysis showed that the specific surface area and the surface energy of DS were higher than those of BS. The lipophilicity of DS was less than that of BS. The DS was apt to agglomerate into larger agglomeration particles in LP, which was the main reason for the fact of DS affecting LP viscosity more severely compared with BS.关键词
燃油/碳烟/表面特性/润滑油/黏度Key words
fuel/soot/surface property/lubricating oil/viscosity分类
能源科技引用本文复制引用
刘天霞,宋汝鸿,胡恩柱,徐玉福,胡献国..燃油碳烟颗粒的表面特性与润滑油黏度行为[J].化工学报,2015,(10):4123-4130,8.基金项目
国家自然科学基金项目（51275143，51405124）。@@@@supported by the National Natural Science Foundation of China (51275143,51405124) （51275143,51405124）
