大豆油基Al2O3纳米流体的悬浮稳定性及抗磨减摩性能研究  

Investigation on suspension stability and anti-wear and anti-friction properties of soybean oil based Al2O3 nanofluid

作　　者：彭锐涛[1] 贺湘波 童佳威 唐新姿[1] 吴艳萍 PENG Ruitao;HE Xiangbo;TONG Jiawei;TANG Xinzi;WU Yanping(School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China)

机构地区：[1]湘潭大学机械工程学院,湖南湘潭411105

出　　处：《功能材料》2020年第8期8194-8199,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51975504);湖南省自然科学(株洲)联合基金(资助项目2018JJ4082);湖南省教育厅重点资助项目(18A077);湖南省教育厅优秀青年资助项目(19B539)。

摘　　要：通过将纳米Al2O3添加至大豆油中来改善其抗磨减摩性能,对比了4种不同分散剂对其在大豆油中悬浮稳定性的影响。采用HRS-2M高速往复摩擦试验机测试了Al2O3纳米流体抗磨减摩效果。并用探针三维轮廓仪、接触角测量仪、扫描电镜和能谱仪,研究了Al2O3纳米流体的抗磨减摩机理和润湿性能。结果表明十二烷基苯磺酸钠(SDBS)对纳米Al2O3在大豆油中悬浮稳定性最佳。纳米Al2O3能有效的提高大豆油的抗磨减摩性能,且当纳米Al2O3纳米的含量为2.0%时,接触角最小,抗磨减摩性能最佳,并结合EDS结果分析了其作用机理。In this paper,nano-Al2O3 was added to soybean oil to improve its anti-wear and anti-friction properties,and the effects of four different dispersants on the suspension stability of nano-Al2O3 in soybean oil were compared.Using HRS-2M high speed reciprocating friction tester,the anti-wear and anti-friction effects of Al2O3 naonofluid were tested.The anti-wear and anti-friction mechanism and wetting properties of Al2O3 naonofluid were studied by using probe 3D profilometer,contact angle measuring instrument,scanning electron microscope and energy spectrometer.The results showed that sodium dodecyl benzene sulfonate(SDBS)had the best suspension stability of nano-Al2O3 in soybean oil.Nano-Al2O3 could effectively improve the anti-wear and anti-friction performances of soybean oil.When the mass fraction of nano-Al2O3 was 2.0%,the contact angle was the smallest and the anti-wear and anti-friction performances were the best.The action mechanism of Al2O3 nanoparticles was analyzed by combining EDS results.

关 键 词：纳米流体 纳米AL2O3 大豆油 悬浮稳定性 抗磨减摩机理 

分 类 号：TH117.2[机械工程—机械设计及理论]