摘要
氧化石墨烯(GO)因兼具界面活性和摩擦学特性在金属加工液领域具有较大的应用潜能。制备了三种不同功能化GO(FGOs),包括醇边缘修饰的Oct-O-GO、胺边缘修饰的Oct-N-GO以及胺基面修饰的C8H18NGO,并采用元素分析、FTIR、Raman、XRD和TGA对其结构进行表征确认。首先,研究了FGOs的油水界面及乳化特性;然后,利用FGOs做乳化剂和润滑剂成功构建了GO基Pickering乳液;最后,采用UMT-Tribolab考察了所构建乳液的摩擦学性能,并利用XPS和XANES等探究了其润滑作用机理。
Graphene oxide( GO) has great application potential in the field of metal-working fluids owning to its interfacial activity and tribological properties. Three different functionalized GOs( FGOs) were prepared,including octanol edge-functionalized Oct-O-GO,octylamine edge-functionalized Oct-N-GO and basal-functionalized C8H18 NGO. The structures of FGOs were characterized and confirmed by elemental analysis,FT-IR,Raman,XRD and TGA. Firstly,the oil-water interfacial properties and emulsifying properties of FGOs were studied. Then,GO-based Pickering emulsions were successfully constructed using FGOs as emulsifiers and lubricants. Finally,tribological tests of the constructed emulsions were conducted on UMT-Tribolab,and the lubricating mechanism was investigated by XPS and XANES.
作者
杨红梅
李久盛
曾祥琼
YANG Hong-mei;LI Jiu-sheng;ZENG Xiang-qiong(Laboratory of Advanced Lubricating Materials,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 200120,China;State Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200030,China)
出处
《润滑油》
CAS
2020年第3期47-50,共4页
Lubricating Oil
