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master's thesis
Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2019. urn:nbn:hr:149:768345
Mujkanović, Dino
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Mujkanović, D. (2019). Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:768345

Mujkanović, Dino. "Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:149:768345

Mujkanović, Dino. "Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:149:768345

Mujkanović, D. (2019). 'Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:768345

Mujkanović D. Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2019 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:149:768345

D. Mujkanović, "Utjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:149:768345

Metadata
TitleUtjecaj polimernih površinski aktivnih tvari na stabilnost i svojstva nanofluida na bazi transformatorskog ulja
Title (english)The influence of polymeric surfactants on stability and properties of nanofluids based on transformer oils
AuthorDino Mujkanović
MentorAnte Jukić (mentor)
Committee memberAnte Jukić (predsjednik povjerenstva)
Committee memberFabio Faraguna (član povjerenstva)
Committee memberMirela Leskovac (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2019-03-29, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Cilj izrade ovog rada je bila priprava i karakterizacija nanofluida na osnovi transformatorskog ulja HyVolt III i nanočestica magnetita (Fe3O4) sa površinski aktivnom tvari (PAT) dobivenom kopolimerizacijom dodecil-metakrilata (DDMA) i N,N-dimetilaminoetil-metakrilata (DMAEM). Nanofluidi se razmjerno nova grana nanotehnologije koja se istražuje zbog dokazanih boljih svojstava, odnosno veće toplinske vodljivosti i manje električne vodljivosti u odnosu na čista mineralna transformatorska ulja. Eksperimenti su se provodili u tri faze. U prvoj fazi se ispitivalo koji molarni omjer komonomera tvori PAT koja pruža najbolju stabilnost nanofluida pri istoj masenoj koncentraciji nanočestica. U drugoj fazi se PAT-u s 5 mol % DMAEM koji je pokazao najbolju stabilnost u prvoj fazi, mijenjala molekulska masa kako bi se ustanovilo kako ona utječe na stabilnost nanofluida. U trećoj fazi su se, osim stabilnosti, ispitivala svojstva kinematičke i dinamičke viskoznosti te toplinske vodljivosti za različite udjele PAT-a u ulju te nanofluidima s različitim udjelima nanočestica.
Abstract (english)
The aim of this paper was preparation and characterization of nanofluids with transformer oil HyVolt III as the base fluid and magnetite nanoparticles (Fe3O4) as surfactants (PAT) obtained by copolymerization of dodecyl methacrylate (DDMA) and N, N-dimethylaminoethyl-methacrylate (DMAEM). Nanofluids are a relatively new branch of nanotechnology that is being investigated recently because of their proven better thermal conductivity and insulation properties compared to mineral transformer oils. Experiments were conducted in three stages. In the first stage, different molar ratios of the monomers that make up PAT were being investigated to find out which of them gives the best stability of nanofluids at the same mass concentration of nanoparticles. In the second stage, the molecular weight of PAT with 5 mol. % DMAEM, which showed the best stability in the previous stage, was changed to determine its effect on the stability of nanofluids. In the third stage, besides stability, the kinematic and dynamic viscosity properties were investigated alongside thermal conductivity for different concentrations of PAT in oil and nanofluids with different concentrations of nanoparticles.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:768345
Study programmeTitle: Environmental Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka ekoinženjerstva (magistar/magistra inženjer/inženjerka ekoinženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2020-03-29
Terms of useLicence In copyright icon
Created on2022-02-26 10:51:07