Experimental investigation of the effect of volume concentration and average diameters of nanoparticles on the contact angle of wetting between nanofluids and different substrates

Описание

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: 4th All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2019

Год издания: 2019

Идентификатор DOI: 10.1088/1742-6596/1359/1/012137

Аннотация: The influence of different volume concentrations and average diameters of Al2O3 nanoparticles on the contact angle of wetting between nanofluids and different substrates was experimentally investigated. The concentrations of aluminium oxide nanoparticles were varied from 0.0625 vol.% to 1 vol.%. The average diameters of aluminium oПоказать полностьюxide nanoparticles were varied from 43 nm to 150 nm. Andesite, diabase, gabbro-diabase and metabasalt were chosen as the substrates. The dependences of the value of the contact angle of wetting between nanofluids and different substrates were obtained as a result of the experiments. It was shown, that the contact angle of wetting nonlinearly depended on the nanoparticles volume concentration. In addition, it was found that the wetting angle also depends on the substrate material, on which the drop lies. It was also obtained that the contact angle of wetting between different substrates and nanofluids with average and huge nanoparticles ( 75 nm) increased 1.25-1.5 times even at the smallest concentration (0.0625 vol.%) and then achieved the plateau. In contrast, the contact angle of wetting between different substrates and nanofluids with small nanoparticles ( 50 nm) reached maximum at a concentration of 0.0625 vol.% and after that slowly decreased to the values lower than those for the pure water. © Published under licence by IOP Publishing Ltd.

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Издание

Журнал: Journal of Physics: Conference Series

Выпуск журнала: Vol. 1359, Is. 1

Номера страниц: 12137

ISSN журнала: 17426588

Издатель: Institute of Physics Publishing

Авторы

  • Lobasov A.S. (Siberian Federal University, Krasnoyarsk, 660074, Russian Federation, Institute of Thermophysics SB RAS, Novosibirsk, 630090, Russian Federation)
  • Minakov A.V. (Siberian Federal University, Krasnoyarsk, 660074, Russian Federation, Institute of Thermophysics SB RAS, Novosibirsk, 630090, Russian Federation)
  • Pryazhnikov M.I. (Siberian Federal University, Krasnoyarsk, 660074, Russian Federation, Institute of Thermophysics SB RAS, Novosibirsk, 630090, Russian Federation)

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