Kedzierski M A, Brignoli R, Quine K T, Brown J S
National Institute of Standards and Technology, 100 Bureau Drive, Stop 861, Gaithersburg, MD 20899-8631.
Department of Mechanical Engineering, The Catholic University of America, 620 Michigan Ave, NE, Washington, DC 20064.
Int J Refrig. 2017 Feb;74:3-11. doi: 10.1016/j.ijrefrig.2016.10.003. Epub 2016 Oct 8.
This paper presents liquid kinematic viscosity, density, and thermal conductivity measurements of eleven different synthetic polyolester-based nanoparticle nanolubricants (dispersions) at atmospheric pressure over the temperature range 288 K to 318 K. Aluminum oxide (AlO) and zinc oxide (ZnO) nanoparticles with nominal diameters of 127 nm and 135 nm, respectively, were investigated. A good dispersion of the spherical and non-spherical nanoparticles in the lubricant was maintained with a surfactant. Viscosity, density, and thermal conductivity measurements were made for the neat lubricant along with eleven nanolubricants with differing nanoparticle and surfactant mass fractions. Existing models were used to predict kinematic viscosity (±20%), thermal conductivity (±1%), and specific volume (±6%) of the nanolubricant as a function of temperature, nanoparticle mass fraction, surfactant mass fraction, and nanoparticle diameter. The liquid viscosity, density and thermal conductivity were shown to increase with respect to increasing nanoparticle mass fraction.
本文介绍了在288 K至318 K温度范围内，十一种不同的基于合成多元醇酯的纳米颗粒纳米润滑剂（分散体）在大气压下的液体运动粘度、密度和热导率测量结果。分别研究了标称直径为127 nm的氧化铝（AlO）和135 nm的氧化锌（ZnO）纳米颗粒。通过表面活性剂使球形和非球形纳米颗粒在润滑剂中保持良好的分散。对纯润滑剂以及十一种具有不同纳米颗粒和表面活性剂质量分数的纳米润滑剂进行了粘度、密度和热导率测量。使用现有模型预测纳米润滑剂的运动粘度（±20%）、热导率（±1%）和比容（±6%）随温度、纳米颗粒质量分数、表面活性剂质量分数和纳米颗粒直径变化的函数关系 液体粘度、密度和热导率随纳米颗粒质量分数的增加而增加。
