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master's thesis
Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:576577
Ljubić, Nikola
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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Ljubić, N. (2020). Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:576577

Ljubić, Nikola. "Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:576577

Ljubić, Nikola. "Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:576577

Ljubić, N. (2020). 'Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 08 September 2024, https://urn.nsk.hr/urn:nbn:hr:149:576577

Ljubić N. Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2024 September 08] Available at: https://urn.nsk.hr/urn:nbn:hr:149:576577

N. Ljubić, "Ispitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:576577

Metadata
TitleIspitivanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom
Title (english)Probing of polymer coatings water uptake by electrochemical impedance spectroscopy
AuthorNikola Ljubić
MentorSanja Martinez (mentor)
Committee memberSanja Martinez (predsjednik povjerenstva)
Committee memberMarijana Kraljić Roković (član povjerenstva)
Committee memberMartina Sudar (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-09-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu provodilo se eksperimentalno istraživanje vodoupojnosti polimernih premaza elektrokemijskom impedancijskom spektroskopijom. Za istraživanje koristila su se četiri sustava premaza, dva na bazi vode i dva na bazi otapala, koji služe za zaštitu čeličnih konstrukcija od korozije u uvjetima industrijskog okoliša visoke korozivnosti. Upijanje vode u premaz postignuto je uranjanjem metalnih pločica presvučenih premazom u 3,5% otopinu NaCl. Mjerenje je provođeno svaki sat, prvih 10 sati uranjanja, a potom povremeno sve do 154 sati uranjanja. Snimljeni su impedancijski spektri premaza u području od 100 kHz do 10 mHz, a vodoupojnost je izračunata pomoću Brasher-Kingsburyjeve jednadžbe iz modula impedancije pri 10 kHz. Premazi na bazi vode pokazali su veću vodoupojnost do maksimalno oko 40% od premaza na bazi otapala koji pokazuju vodoupojnost do oko 10% uz zanemarenje korekcijskog faktora kojim se iskazuje postotak polimera u premazu.
Abstract (english)
In this paper, an experimental research about water absorption of the polymer coatings was conducted by electrochemical impedance spectroscopy. Four coating systems were investigated, two of them is water-based paints and two were solvent-based paints which are used to protect the steel constructions from corrosion, under the conditions of highly corrosive industrial environment. Water absorption inte the coating was achieved by immersion if the coated metal plates into the 3,5% NaCl solution. Measurment took place every hour, for the first 10 hours of immersion and then periodically until 154 hours of immersion. Impedance spectres of the coatings were recorded in the renge between 100 kHz and 10 mHz and water absorption was calculated with the help Brasher-Kingsbury equation from the impedance modulus at 10 kHz. Water-based coatings have shown greater water absorption with maximum of 40%, while the solvent-based coatings had water absorption of about 10%, when the correction factor which shows percentage of polymer in the coating is neglected.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:576577
Study programmeTitle: Chemical Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsClosed access
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Created on2020-10-28 13:07:49