第 47 卷第 5 期 Vol. 47 No. 5 2017 年 10 月 Oct 2017

所属栏目：功能材料 不同晶型纳米Al2O3的制备及其对环氧树脂耐磨性能的影响

缐 芳，李巧玲*，陈 贝，张佳裕 （中北大学 理学院，山西 太原 030051）

摘　要：以硫酸铝和硝酸铝为铝源，尿素为添加剂，聚乙二醇（PEG-6000）为分散剂，采用两步水热法制备前驱体γ-AlOOH，再高温煅烧得到不同晶型纳米氧化铝粉末。运用SEM、XRD、EDS对煅烧前后样品的形貌、物相、分散情况进行表征。采用环块型摩擦磨损试验机（MRH-3）研究了纳米氧化铝对环氧树脂基复合材料摩擦性能的影响。结果表明：采用两步水热法制得了粒径约为300 nm的α-Al2O3和长度约为400 nm的γ-Al2O3，产物分散性好、分布均匀；利用环块型摩擦磨损试验机对α-Al2O3填充环氧树脂复合涂层进行表征，结果表明，当氧化铝填料量为环氧树脂的3%（m／m）时，磨损率最低为2.3×10-5 mm3／（N·m）。

关键词：水热法；纳米氧化铝；环氧树脂；复合材料

中图分类号：TQ31　　文献标识码：A　　文章编号：1009-9212（2017）05-0043-06

Preparation of Nano-Al2O3 with Different Crystal Forms and Its Effect on Wear Resistance of Epoxy Resin

XIAN Fang, LI Qiao-ling*, CHEN Bei, ZHANG Jia-yu (Department of Chemistry, School of Science, North University of China, Taiyuan 030051, China)

Abstract：In this paper, the precursor γ-AlOOH was prepared by a two-step hydrothermal method using aluminum sulfate and aluminum nitrate as the aluminum source, urea as the additive and polyethylene glycol (PEG-6000) as the dispersant, and then calcined at high temperature to obtain different crystalline nano-oxidation aluminum powder. The morphology, phase and dispersion of the samples before and after calcination were characterized by SEM, XRD and EDS. The effect of nano-alumina on the friction and wear properties of epoxy resin matrix composites was studied by using ring-type friction and wear tester (MRH-3). The results showed that α-Al2O3 with a length of about 300 nm and γ-Al2O3 with a length of about 400 nm were prepared by this two-step hydrothermal method. The product could be dispersed and distributed uniformly. A wear rate of 2.3×10-5 mm3/(N·m) for the epoxy resin at a loading 3%（m/m）was obtained.

Key words：hydrothermal method; nano-alumina; epoxy resin; composite material

基金项目：国家自然科学基金项目（51272239，20871108），山西省留学基金项目（2014-重点6）。

作者简介：缐 芳（1992-），女，硕士研究生，研究方向：纳米材料在耐磨涂层中的应用（E-mail：18235148213@163.com）。

联 系 人：李巧玲，教授，博士生导师（E-mail：qiaolingl@163.com）。

收稿日期：2017-10-17