摘要
以去离子水为基液,以氧化石墨烯纳米粒子为添加剂,制备成水基氧化石墨烯纳米流体,研究纳米流体在不同浓度、温度以及不同纳米粒子粒径下的表面张力,表面张力采用吊环法进行测量。实验结果表明,纳米流体的表面张力随着质量分数增大而增大,但相对于去离子水,最大质量分数(0.10%)的纳米流体表面张力仅增加了2.9%;纳米流体的表面张力随着温度的升高而降低,但降低的幅度小于去离子水随温度的降低幅度;纳米流体的表面张力随着纳米粒子粒径的减小而降低。
The water-based graphene oxide nanofluids were prepared. The surface tension of nanofluids with different mass fractions, temperatures and different nanoparticle sizes was investigated. Surface tension was measured using a ring approach. The experimental results show that the surface tension increases with an increase in the mass faction of nanoparticles. However, the surface tension of nanofluids with maximum concentration （0.10%） only increases up to 2.9% compared to deionized water. The surface tension decreases with an increase in temperature and a decrease in nanoparticle size.
出处
《热科学与技术》
CAS
CSCD
北大核心
2015年第3期203-207,共5页
Journal of Thermal Science and Technology
基金
国家自然科学基金面上资助项目(51276204)
广东高校热泵工程技术开发中心建设资助项目(KJZX-0058)
