碳纳米管/环氧复合材料的摩擦磨损性能研究

Improving Dispersion of Carbon Multi-Walled Nanotubes(MWNTs) in Epoxy Resin Composites

研究了多壁碳纳米管(MWNTs)含量、超声分散时间、超声分散方式对环氧复合材料摩擦磨损性能的影响,通过扫描电镜(SEM),透射电镜(TEM)分析了材料表面磨损形貌、MWNTs分散程度,并探讨了复合材料摩擦磨损机理。结果表明:MWNTs添加量为1.5%时,MWNTs/Epoxy复合材料比环氧树脂摩擦系数降低17.8%,磨耗率降低91.7%;加入MWNTs降低了复合材料粘着磨损与疲劳剥落;延长超声波处理时间及采用高功率超声波仪器能够有效提高MWNTs分散程度,提高复合材料摩擦磨损性能。

Aim. Wang et al in Ref. 10 dealt with the believe some improvements over and above their same dispersion problem. We now present what we achievements. In the full paper, we explain our improvements in some detail; In this abstract, we just add some pertinent remarks to listing the two topics of explanation. The first topic is： experiments. In this topic, we prepared MWNTs/EP composites by casting molding. Then we test their wear performance with a M-200 Type Chinese wear tester, and use SEM and TEM to characterize their dispersion. The second topic is. experimental results and their discussion. Its four subtopics are. the effects of MWNTs content on tribological properties of MWNTs/EP composites （Subtopic 2.1）, the topological analysis of worn surfaces （Subtopic 2.2）, the effects of MWNTs dispersion time on the tribological properties of the composites （Subtopic 2. 3） and the effects of ultrasonication method on the tribological properties of the composites （Subtopic 2.4）. The experimental results, presented in Figs. 2 through 5 and Table 1 in the full paper, show preliminarily that. （1） the addition of MWNTs can enhance the tribological properties of the MWNTs/EP composites; when the addition is 1.5%, the friction coefficient of the composites is 17.8% lower than that of pure epoxy resin and the wear rate is 91.7 % lower; （2） the dispersion of MWNTs has remarkable effects on the tribological properties of the composites; the ultrasonication method and ultrasonication time can raise the dispersion degree of MWNTs/EP composites.