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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。
Using deionized water as a base solution and graphene oxide nanoparticles as additives, a water-based graphene oxide nanofluid was prepared, and the surface tension of the nanofluid at different concentrations, temperatures and different nanoparticle diameters was studied. The surface tension was measured by a ring Law to measure. The experimental results show that the surface tension of the nanofluid increases with the increase of the mass fraction, but the surface tension of the nanofluid with the maximum mass fraction (0.10%) increases only by 2.9% with respect to the deionized water. The surface tension of the nanofluid with The temperature decreases with the increase of temperature, but the decrease is less than that of deionized water. The surface tension of nanofluid decreases with the decrease of particle size.