碳纳米管的化学修饰以及作为润滑油添加剂的摩擦学性能研究

化学学报 ›› 2004, Vol. 62 ›› Issue (14): 1367-1372. 上一篇

碳纳米管的化学修饰以及作为润滑油添加剂的摩擦学性能研究

陈传盛, 陈小华, 刘天贵, 杨东, 张刚, 易国军

湖南大学材料科学与工程学院, 长沙, 410082

投稿日期:2003-10-09 修回日期:2004-03-18 发布日期:2014-02-17
通讯作者: 陈小华,E-mail:Hudacxh@sohu.com;jxccs1934@yahoo.com.cn;Tel:0731-8822663. E-mail:Hudacxh@sohu.com;jxccs1934@yahoo.com.cn
基金资助:
国家自然科学基金(Nos.50372020,59972031)和湖南省自然科学基金(No.01JJY2052)及湖南大学重大基金资助项目.

Chemical Modification of Carbon Nanotubes and Tribological Properties as Lubricant Additive

CHEN Chuan-Sheng, CHEN Xiao-Hua, LIU Tian-Gui, YANG Dong, ZHANG Gang, YI Guo-Jun

College of Materials Science and Engineering, Hunan University, Changsha 410082

Received:2003-10-09 Revised:2004-03-18 Published:2014-02-17

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摘要/Abstract

采用硫酸和硝酸混合酸对催化裂解法(CVD法)制备的多壁碳纳米管(MWNTs)进行纯化,然后运用硬脂酸对碳纳米管进行表面修饰,并研究了硬脂酸修饰后的碳纳米管的表面状况以及作为润滑油添加剂的摩擦学行为.实验结果表明,在硫酸催化剂作用下,通过酯化反应碳纳米管能够被硬脂酸包覆,并且硬脂酸修饰的碳纳米管作为润滑油添加剂能够显著提高基础油的减摩抗磨性能,当添加量为0.15%左右时,润滑油的减摩抗磨性能最佳,与基础油相比可以使摩擦系数下降10%左右,磨损量下降30%～60%.

关键词: 碳纳米管, 表面修饰, 润滑油添加剂, 摩擦学性能

The multi-walled carbon nanotubes were purified by sulfuric acid and nitric acid.The surface of carbon nanotubes was modified with stearic acid.The tribological behavior of stearic acid coated carbon nanotubes as lubricant additive was investigated.The results showed that the surface of carbon nanotubes was coated with a modified layer of stearic acid.It was proved that a covalent bond was formed by chemical reaction between hydroxylic groups on the surface of carbon nanotubes and carboxylic groups of stearic acid.Stearic acid coated carbon nanotubes as additive effectively improved the friction-reduction and antiwear ability of lubricant.

Key words: carbon nanotube, surface modification, lubricant additive, tribological property

引用此文

陈传盛, 陈小华, 刘天贵, 杨东, 张刚, 易国军. 碳纳米管的化学修饰以及作为润滑油添加剂的摩擦学性能研究[J]. 化学学报, 2004, 62(14): 1367-1372.

CHEN Chuan-Sheng, CHEN Xiao-Hua, LIU Tian-Gui, YANG Dong, ZHANG Gang, YI Guo-Jun. Chemical Modification of Carbon Nanotubes and Tribological Properties as Lubricant Additive[J]. Acta Chimica Sinica, 2004, 62(14): 1367-1372.

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