磷酸酯阴离子插层水滑石作为纳米润滑添加剂的研究  

Phoshate Interlayered LDH as Nanolubricant Additive

作　　者：巴召文 韩云燕 乔旦[1] 冯大鹏[1] 黄国威 BA Zhaowen;HAN Yunyan;QIAO Dan;FENG Dapeng;HUANG Guowei(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Gansu Lanzhou 730050,China)

机构地区：[1]中科院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《摩擦学学报》2018年第4期373-382,共10页Tribology

基　　金：国家自然科学基金项目(51705506);固体润滑国家重点实验室开放课题(LSL-1708)资助~~

摘　　要：利用尿素分解法制备了镍铝基水滑石(LDH)纳米材料,然后采用离子交换法对其进行了磷酸酯插层修饰,成功合成了二丁基磷酸酯阴离子插层水滑石(LDH-DBP)和二异辛基磷酸酯阴离子插层水滑石(LDH-OBP)纳米材料.通过傅立叶变换红外光谱仪、X射线衍射仪、热重和透射电子显微镜对所制备纳米材料的化学组成、晶体结构及颗粒形貌进行了分析表征.采用SRV-IV摩擦试验机研究其作为PAO-4的润滑添加剂的摩擦学性能,试验结果表明:磷酸酯阴离子插层修饰的水滑石纳米添加剂可显著提高PAO-4在高载荷(200 N))条件下的摩擦学性能,其减摩抗磨机理可归于水滑石纳米材料的片状吸附和磷酸酯摩擦化学反应的协同作用.Ni-Al layered double hydroxide（LDH） was synthesized by urea pyrolysis method. The dibutyl phosphate anion interlayered LDH（LDH-DBP） and diisooctyl phosphate anion interlayered LDH（LDH-OBP） were prepared by the phosphate interlayered modification with the anion-exchange method. Their chemical composition, crystal structure and morphology were detected by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetry analysis and transmission electron microscopy. Furthermore, the tribological properties of PAO-4 using LDH, LDH-OBP and LDH-DBP as additives were characterized on the SRV-IV tribometer. The experiment results indicate that the modified additives performed excellent tribological properties under high load（200 N）. The lubrication mechanism was ascribed to the synergy between the flake adsorption of LDH and the tribochemical reaction of phosphate with metal substrates.

关 键 词：水滑石 磷酸酯插层 纳米材料 添加剂 

分 类 号：TH117.2[机械工程—机械设计及理论]