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Vpliv hidrofobne prevleke na adhezijo ledu na gladkih in strukturiranih površinah
ID Brezovar, Tilen (Author), ID Može, Matic (Mentor) More about this mentor... This link opens in a new window, ID Golobič, Iztok (Comentor)

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Abstract
Naloga obravnava adhezijo ledu na površini, katere zmanjšanje predstavlja velik izziv za izboljšanje obratovanja inženirskih sistemov v aplikacijah pri nizkih temperaturah. Led, ki se v takih primerih nabere na površini, želimo čim lažje odstraniti, zato se poslužujemo različnih pristopov obdelave površine. V delu smo z uporabo horizontalnega strižnega testa adhezije in meritev kota omočenja ter kota zdrsa ovrednotili različne kombinacije površinskih obdelav in hidrofobnih prevlek. Z meritvami zakasnitve in temperature zmrzovanja vodnih kapljic na površinah pa smo ovrednotili protizmrzovalne lastnosti površin. Naša analiza je pokazala da je za odstranjevanje ledu najboljša kombinacija površine brez predobdelave s fluorirano prevleko. S takim pristopom k obdelavi površine smo uspešno znižali adhezijo ledu za 71 % napram popolnoma neobdelani površini, kar predstavlja ugoden pristop za pasivno preprečevanje posledic zaledenitve v praksi

Language:Slovenian
Keywords:adhezija ledu, kot omočenja, prevleke, gladke površine, strukturirane površine, nukleacija ledu
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2025
Number of pages:XX, 51 str.
PID:20.500.12556/RUL-174857 This link opens in a new window
UDC:532.64:539.61-032.24(043.2)
COBISS.SI-ID:252835587 This link opens in a new window
Publication date in RUL:10.10.2025
Views:153
Downloads:48
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Secondary language

Language:English
Title:Effect of a hydrophobic coating on ice adhesion on smooth and structured surfaces
Abstract:
The thesis addresses ice adhesion on surfaces, where reducing adhesion represents a major challenge for improving the operation of engineering systems in low-temperature applications. In such cases, ice that accumulates on the surface should be removed as easily as possible, which is why different surface treatment approaches are used. In this thesis, we evaluated various combinations of surface treatments and hydrophobic coatings through horizontal shear adhesion tests as well as measurements of the contact angle and sliding angle. By measuring freezing delay and freezing temperature of water droplets, we determined the icephobic properties of the surfaces. Our analysis showed that the best combination for easy ice removal is a surface without pretreatment with a fluorinated coating. With this surface treatment approach, we successfully reduced ice adhesion by 71 % compared to the untreated surface, representing a favorable approach for passive alleviation of icing issues in practice.

Keywords:ice adhesion, contact angle, coatings, smooth surfaces, structured surfaces, ice nucleation

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