液体润滑剂的黏度对边界滑移影响的实验研究

中国机械工程 ›› 2015, Vol. 26 ›› Issue (12): 1635-1638,1644.

液体润滑剂的黏度对边界滑移影响的实验研究

高诚辉1;杜华1;王巍琦2;潘伶1

1.福州大学,福州,350108
2.清华大学摩檫学国家重点实验室,北京,100084

出版日期:2015-06-25 发布日期:2015-06-29
基金资助:
国家自然科学基金资助项目（51175085）;清华大学摩擦学国家重点实验室开放基金资助项目（SKLTKF13A09）
National Natural Science Foundation of China（No. 51175085）

Experimental Research on Boundary Slip Affectted by Liquid Viscosity

Gao Chenghui1;Du Hua1;Wang Weiqi2;Pan Ling1

1.Fuzhou University,Fuzhou,350108
2.State Key Laboratory of Tribology,Tsinghua University,Beijing,100084

Online:2015-06-25 Published:2015-06-29
Supported by:
National Natural Science Foundation of China（No. 51175085）

摘要/Abstract

摘要：

为了了解微纳米间隙中流体的流动特性，采用原子力显微镜对微纳米间隙中的固体和液体边界滑移进行了实验研究,主要研究了液体润滑剂的黏度对边界滑移的影响。实验中采用的固体样品为SiO2,液体样品为两种不同黏度的季戊四醇油酸酯,分子式为C77H140O8,黏度分别为32mm2/s和150mm2/s。采用相对速度法对实验数据进行了处理,结果表明,不同黏度的季戊四醇油酸酯和SiO2表面作用时都会发生边界滑移,黏度大,产生的滑移大。其原因是,随着黏度升高,邻近固体表面的液体分子与和固体表面相接触的液体分子之间的剪切力增大,可更加容易地克服固液界面间的作用力，更加容易产生边界滑移。

关键词: 微纳米间隙, 原子力显微镜, 边界滑移, 黏度

Abstract:

In order to study fluid flow characteristics of the micro-nano gap,the boundary slip in micro-nano gap was studied using atomic force microscope,mainly from the standpoint of liquid viscosity.The solid sample was SiO2,the liquid sample was pentarythriol oleate with different viscosity,their molecular formula are C77H140O8,their viscosity were 32mm2/s and 150mm2/s,respectively.Using the relative velocity method processed the test results,as the results shown,two different types of pentaerythritol oleate on the face of SiO2 both have boundary slip,the boundary slip increases with increasing of liquid viscosity.The reason is shown as follow,with the viscosity increasing,the shear force which will increase between nearing the solid surface liquid molecules and contacting with solid surface liquid molecules,so that solid-liquid force is easy to overcome,easy to generate boundary slip.

Key words: micro-nano , gap;atomic , force , microscope;boundary slip;viscosity

中图分类号:

TH117.2

高诚辉1;杜华1;王巍琦2;潘伶1. 液体润滑剂的黏度对边界滑移影响的实验研究[J]. 中国机械工程, 2015, 26(12): 1635-1638,1644.

Gao Chenghui1;Du Hua1;Wang Weiqi2;Pan Ling1. Experimental Research on Boundary Slip Affectted by Liquid Viscosity[J]. China Mechanical Engineering, 2015, 26(12): 1635-1638,1644.

参考文献

[1]胡小平,颜建辉,张厚安.纳米ZrO2对MoSiO2涂层高温摩擦磨损行为的影响[J].中国机械工程,2011,22(12):1498-1502.
Hu Xiaoping,Yan Jianhui,Zhang Houan.Effects of Nano-ZrO2 on   Friction   and   Wear   Behaviors of   MoSi2 Coating at High Temperature[J].China Mechanical Engineering,2011,22(12):1498-1502.
[2]南江红,刘更,佟瑞庭,等.纳观纹理表面摩擦过程的分子动力学模拟[J].中国机械工程,2012,23(19):2378-2383.
Nan Jianhong,Liu Geng,Tong Ruiting,et al.Molecular Dynamics Simulation of Friction Behavior on Nanoscale Textured Surfaces[J].China Mechanical Engineering,2012,23(19):2378-2383.
[3]张俊杰,闫永达,孙涛,等.单晶铜纳米机械加工的分子动力学模拟与实验的间接对比[J].中国机械工程,2013,24(24):3289-3294.
Zhang Junjie,Yan Yongda,Sun Tao.Indirect Comparison between Molecular Dynamics Simulations and Experiments of Mechanical Nanomachining on Single Crystalline Copper[J].China Mechanical Engineering,2013,24(24):3289-3294.
[4]Vinogrodova O I.Drainage of a Thin Liquid Film Confined between Hydrophobic Surfaces[J].Langmuir,1995,11(6):2213-2220.
[5]Wang Yuliang,Bhushan Bharat.Boundary Slip and Nanobubble Study in Miro/Nano Fluidics using Actomic Force Microscopy[J].Soft Matter,2010,6:29-66.
[6]Zhang Hongwu,Zhang Zhongqing,Ye Hongfei.Molecular Dynamics-based   Prediction of Boundary Slip of Fluids in Nanochannels[J].Microfluid Nanofluid,2012,12:107-115.
[7]Wang Fengchao,Zhao Yapu.Slip Boundary Conditions Based on Molecular Kinetic Theory:the Critical Shear Stress and the Energy Dissipation at the Liquid-solid Interface[J].Soft Matter,2011,7:8628-8634.
[8]Jing Dalei,Bhushan Bharat.Boundary Slip of Superoleophilic,Oleophobic,and Superoleophobic Surfaces Immersed in Deionized Water,Hexadecane,and Ethylene Glycol.Langmuir,2013,29:14691-14700.
[9]凌智勇,刘勇,丁建宁,等.亲水性和疏水性微管道中流动滑移特性的实验研究[J].中国机械工程,2006,17(22):2326-2329.
Ling Zhiyong,Liu Yong,Ding Jianning,et al.Experimental Study on the Characteristics of Slip in Hydrophilic and Hydrophobic Microchannels[J].China Mechanical Engineering,2006,17(22):2326-2329.
[10]王馨,张向军,孟永钢,等.运动速度与边界滑移相关性试验研究[J].纳米技术与精密工程,2009,7(5):428-432.
Wang Xin,Zhang Xiangjun,Meng Yonggang,et al.Experimental Research on the Dependence between Velocity and Boundary Slip[J].Nanotechnology and Precision Engineering,2009,7(5):428-432.
[11]王馨,张向军,孟永钢,等.剪切率对微纳米间隙下流体边界滑移影响的试验研究[J].中国机械工程,2009,20(17):2081-2084.
Wang Xin,Zhang Xiangjun,Meng Yonggang,et al.Experimental Research on Boundary Slip of Confined Liquids at Micro/Nano Scale and Effect of Shear Rate[J].China Mechanical Engineering,2009,20(17):2081-2084.
[12]Craig V S J,Neto C,Williams D R M.Shear-dependent Boundary Slip in an Aqueous Newtonian Liquid[J].Physical Review Letters,2001,87:054504-1-054504-4.
[13]You Xueyi,Zheng Jinru,Jing Qi.Effects of Boundary Slip and Apparent Viscosity on the Stability of Microchannel Flow[J].Forsch Ingenieurwes,2007,71:99-106.
[14]Chan D Y   C,Horn R G.The Drainage   of   Thin Liquid Films between Solid Surfaces[J]. J. Chem. Phys.,1985,83:5311-5324.
[15]Bonaccurso E,Kappl M,Butt H J.Hydrodynamic Force Measurements: Boundary Slip of Water on Hydrophilic Surfaces and Electrokinetic Effect[J].Physical Review Letters,2002,88(7):076103-1-076106-4.