摘要
在水中加入碳纳米管制备了含碳纳米管悬浮液(纳米流体),研究了几种典型类型的表面活性剂:十二烷基苯磺酸钠(SDBS)、十六烷基三甲基溴化铵(HTAB)及乳化剂OP对纳米流体稳定性的影响,通过静置和离心分离等手段研究了其稳定性,并采用扫描电子显微镜(SEM)和透射电子显微镜(TEM)对样品的形貌进行了表征.结果显示,未加表面活性剂时碳纳米管不能均匀地分散到水中,而添加了表面活性剂的纳米流体的稳定性大幅度提高,能够稳定存在数月,而且表面活性剂质量浓度存在一个最佳值,此时纳米流体的稳定性最好.在3种表面活性剂中非离子型表面活性剂乳化剂OP作为分散剂时碳管纳米流体的稳定性最好.
A suspension of carbon nanotubes as a nanofluids was prepared by dispersing carbon nanotubes into deionized water. The effects of several typical kinds of surfactants such as sodium dodecyl benzene sulfonate （ SDBS ）, hexadecyl trimethyl ammonium bromide （HTAB） and emulsifying agent OP on the stability of the nanofluid were studied by stationary and centrifugal tests with sample morphologies characterized by SEM and TEM. The results showed that the carbon nanotubes can not be dispersed homogeneously in water without surfactant, but the stability of the nanofluid in which a surfactant has been added is enhanced significantly and then it can be kept up for ,several months. There is a best concentration of surfactant to make the stability optimal, and a best stability is available if using OP as surfactant.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第10期1438-1441,共4页
Journal of Northeastern University(Natural Science)
基金
河北省自然科学基金资助项目(E2006000355)
河北省教育厅基金资助项目(2004318)
作者简介
郝素菊（1966-），女，河北石家庄人．东北大学博士研究生，河北理工大学副教授；
张玉柱（1956-）．男，河北沧州人，河北理工大学教授，东北大学博士生导师．
