中山大学学报(自然科学版)2007，Vol.46Issue(z1)：254-255,2.
不同分散剂条件下氧化铜纳米颗粒的稳定性研究
Study on Stability of Al2O3-Nanoparticles with Different Dispersants
摘要
Abstract
As us known, nanofluids can enhance heat transfer, and the dispersion and stability of nanofluids are the key factors to enhance heat transfer, so in this paper we mainly discussed the factors which can influence the dispersion of Al2O3-nanosuspensions. Through zeta-potential and particle size measurements in Al2O3-nanosuspensions, the influence of different pH value and the three different kinds of dispersants (SDBS, CATB and Gum arabic) on the dispersion of Al2O3-nanoparticles were discussed. We find that the absolute value of zeta-potential is the biggest and the size of particles is the smallest with SDBS and Gum arabic dispersants when the pH value of nanofluids is about 8, and the absolute value of zeta-potential is the biggest and the size of particles is the smallest with CATB dispersants when the pH value of nanofluids is about 2～3. We also find that nanofluids has a good dispersion when SDBS used as dispersant, which has the biggest absolute value of Zeta-potential and the smallest particle size.关键词
Al2O3纳米颗粒/分散剂/分散稳定/Zeta电位/粒径Key words
Al2O3-nanoparticle/dispersant/dispersion and stability/zeta-potential/particle size分类
化学化工引用本文复制引用
朱冬生,李华,王先菊,李新芳..不同分散剂条件下氧化铜纳米颗粒的稳定性研究[J].中山大学学报(自然科学版),2007,46(z1):254-255,2.基金项目
国家自然科学基金资助项目(20346001) （20346001）
教育部新世纪优秀人才支持计划项目(NCET-04-0826) （NCET-04-0826）
