摘要
采用原位合成法以聚乙二醇400作为反应介质,以氢氧化钠和氨基配体作为分散剂,用乙二醇还原六水合乙酸铜制备出纳米Cu粉和纳米Cu聚乙二醇溶液,用X射线衍射仪和透射电子显微镜表征其结构,在四球摩擦磨损试验机上评价了含不同质量分数纳米铜粉的聚乙二醇溶液的摩擦磨损性能,并与分散剂进行对比.结果表明:所制备的纳米铜粒径约5 nm且分布均匀;纳米Cu粉可以显著提高聚乙二醇的抗磨和减摩性能.这是由于纳米铜在钢球磨斑表面形成了铜沉积膜和微量的一价氧化铜.
In-situ synthesis process was used to prepare copper nanoparticles and coppernanoparticles-polyethylene glycol oil solution by reduction of copper acetate by glycol in polyethylene glycol containing amido ligand as dispersant. XRD and TEM analysis proved that as-prepared samples containing copper nanoparticles with grain-size of about 5 nm. Tribological behaviors of nano-Cu in PEG-400 were investigated on a four ball machine. Result shows that addition of nano-Cu can greatly improve anti-wear and friction reduction properties of PEG-400. X-ray photoelectron spectroscopy （XPS） and energy dispersive spectrometry （EDS） analysis reveal that tribo-film composed of copper and minor cuprous oxide was formed on the worn surface, which might attributed to the excellent tribological properties.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2005年第5期385-389,共5页
Tribology
基金
国家自然科学基金重点项目资助(50235030)
国家863计划项目资助(2002AA302607)
甘肃省科技攻关项目资助(GS023-A52-028)
关键词
纳米铜
聚乙二醇合成油
摩擦磨损性能
nano-Cu
PEG-400 synthesize oil
friction and wear behavior
