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مجله بین المللی علوم حرارتی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • preparation and anti-frosting performance of super-hydrophobic surface based on copper foil

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 566
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a flower-like super-hydrophobic surface on the copper foil was fabricated by means of a facile method using solution immersing. the water contact angle of this surface was measured to be as high as 156.2° after modified with fluoroalkylsilane (fas) coating. to study its effect on frost deposition, a series of micro-observations of the water droplets formation, initial frost crystals growth and frost layer melting process were carried out on both the super-hydrophobic surface and the plain copper foil surface. the experimental results show that the water droplets condensed on the super-hydrophobic were smaller and present a more spherical shape when compared with that on the plain copper foil surface. the freezing time of the droplets on the super-hydrophobic surface was later than that on the plain copper foil surface. moreover, the super-hydrophobic surface can restrain initial frost crystals formation for 20 min after exposed to the air for one month. the mechanism of surface hydrophobicity influence on droplets frozen and frost formation was analyzed theoretically based on the surface wettability and the phase transition theory.

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