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Viscosité, densité et conductivité thermique de nanolubrifiants d'oxyde d'aluminium et d'oxyde de zinc.

Viscosity, density, and thermal conductivity of aluminum oxide and zinc oxide nanolubricants.

Auteurs : KEDZIERSKI M. A., BRIGNOLI R., QUINE K. T., et al.

Type d'article : Article, Article de la RIF

Résumé

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 (Al2O3) 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.

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Pages : 1-9

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Détails

  • Titre original : Viscosity, density, and thermal conductivity of aluminum oxide and zinc oxide nanolubricants.
  • Identifiant de la fiche : 30019964
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 74
  • Date d'édition : 02/2017

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