采用液相共沉淀法制备了Mg/Al-NO3--LDHs;以月桂酸为插层剂,采用离子交换法对合成产物进行了插层改性;采用X射线衍射(XRD)、热重及差热分析(TG-DTA)、红外光谱(FT-IR)、扫描电镜(SEM)、比表面积分析仪、四球摩擦实验机和齿轮实验机等对合成产物的结构和性能进行了评价.结果表明,插层前,晶体呈六方片状,晶片大小在50～70 nm,比表面较大(137.66m2/g).月桂酸插层后,产物的通道高度增加,但比表面积显著降低;Mg/Al-NO3--LDHs及其月桂酸插层产物可明显降低金属摩擦副的摩擦系数、磨斑直径、润滑介质温度以及驱动电机功耗,是具有良好应用前景的润滑-减摩-节能材料.
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