石墨烯
氧化物
润滑油
摩擦学
材料科学
化学工程
聚丁二烯
基础油
纳米技术
基础(拓扑)
复合材料
冶金
共聚物
扫描电子显微镜
数学分析
数学
工程类
聚合物
作者
Lixia Huo,Jinshan Guo,Hanjun Hu,Kaifeng Zhang,Hui Zhou,Peng Liu
出处
期刊:Langmuir
[American Chemical Society]
日期:2022-07-27
卷期号:38 (31): 9678-9685
被引量:2
标识
DOI:10.1021/acs.langmuir.2c01322
摘要
Graphene has been widely investigated as an additive in lubricating oils to enhance their tribological performance. Here, the effects of the nature and size of the graphene nanosheets on the tribological performance were investigated with the hydrogenated hydroxyl-terminated polybutadiene dioctoate (O-HHTPB-O) as a model base oil after alkylation of the graphene oxide (GO) of different sizes with 1-dodecylamine (DA) and reduction. The 1-dodecylamine-modified graphene oxide (DA-GO) showed better dispersibility in the O-HHTPB-O base oil and subsequently better tribological performance than the reduced one (DA-rGO) for both the larger graphene oxide nanosheets (GOL) and the smaller graphene oxide nanosheets (GOS). The DA-GOS exhibited better wear-reduction performance than the DA-GOL, owing to its smaller size and higher polarity. Although the DA-GOL could be ground during the friction, the friction and wear in the original period affected the complete period lubricating performance.
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