摘要
采用透射电镜、X射线粉末衍射仪、FTIR光谱仪结合化学分析方法对DNSAm型可分散性SiO2纳米微粒进行了结构表征,并考察了其在油性介质中的分散性及在往复摩擦试验机和四球摩擦试验机上的摩擦学行为。结果表明,合成的二氧化硅纳米微粒粒径为10～20nm,表面键合有含氨基的有机碳链,在润滑基础油中有很好的分散性,作为润滑油添加剂具有显著的抗磨减摩性能。
The structure of dispersible SiO2 nanoparticles (DNS-Am) prepared by surface modifying in situ was characterized by way of instruments analysis such as TEM, XRD, FTIRM and chemistry analysis. The dispersivity of the DNS-Am with a size of 10-20 nm in various hydrophobic solvents was showed and the properties of the nanopaticles used as friction-reducing and anti-wear additive in lubricant were evaluated using tribotesters. Results indicate that the additive could form organic/inorganic coextruded thin films on rubbing surface of steel, which contributed to apparent improvement on the tribological properties of lubricant.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2005年第4期1-3,共3页
Lubrication Engineering
基金
国家高技术研究发展计划资助项目(2002AA302607).
关键词
二氧化硅
纳米微粒
结构表征
可分散
抗磨减摩
Additives
Characterization
Lubricants
Particle size analysis
Wear of materials
