prikaz prve stranice dokumenta Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza
  Download
PDF 2.54 MB
master's thesis
Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2023. urn:nbn:hr:149:694594
Kokot, Tea
University of Zagreb
Faculty of Chemical Engineering and Technology

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

Cite this document

Kokot, T. (2023). Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:694594

Kokot, Tea. "Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:149:694594

Kokot, Tea. "Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:149:694594

Kokot, T. (2023). 'Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:694594

Kokot T. Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2023 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:149:694594

T. Kokot, "Fosfonske kiseline kao promotori adhezije vodorazrjedivog premaza", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:149:694594

Metadata
TitleFosfonske kiseline kao promotori adhezije vodorazrjedivog premaza
Title (english)Phosphonic acids as adhesion promoters of water-based coating
AuthorTea Kokot
MentorHelena Otmačić Ćurković (mentor)
Committee memberHelena Otmačić Ćurković (predsjednik povjerenstva)
Committee memberLjerka Kratofil Krehula (član povjerenstva)
Committee memberMarko Viskić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2023-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Premazi na bazi organskih otapala često se koriste u zaštiti metala od korozije, međutim otkriveno je da oni predstavljaju rizik za zdravlje ljudi i okoliš zbog isparavanja toksičnih hlapljivih organskih spojeva. Stoga su ekološki prihvatljivi vodorazrjedivi premazi danas stekli značajnu pažnju zbog njihovog smanjenog udjela hlapljivih organskih spojeva. Problem sa čistim vodorazrjedivim premazima je što oni sadrže hidrofilne skupine i surfaktante zbog čega korozivni ioni i molekule vode mogu lako prolaziti kroz premaz, što onda uzrokuje slaba barijerna svojstva tih premaza. Dodavanje zaštitnih punila ili inhibitora korozije u takve premaze se pokazalo dobrim načinom poboljšanja barijernih svojstava. Primjer takvih spojeva su fosfonske kiseline koje mogu imati ulogu inhibitora korozije i promotora adhezije premaza. U ovom radu su ispitane dvije vrste dugolančanih kiselina, hidroklorid 12-aminododecilfosfonske kiseline i 12-fosfonododecilfosfonska kiselina u kombinaciji sa vodorazrjedivim akrilatnim premazom. Korištene su CuSn12 brončane elektrode čija je površina oksidirana. Ispitivane kiseline nanošene su na površinu bronce metodom uranjana i metodom kista. Elektrode su izlagane otopini kisele kiše (pH = 5) te su u periodu od 10 dana provedena EIS mjerenja, a potom se površina elektroda analizirala optičkim mikroskopom. Također je provedena pull-off metoda za određivanje adhezije premaza.
Abstract (english)
Organic solvent based coatings are often used for corrosion protection of metals, however they have been found to pose a risk to human health and the environment due to the evaporation of toxic volatile organic compounds. Therefore, eco-friendly water-based coatings have attracted increasing attention in recent years. Unfortunately, water-based coatings contain hydrophilic groups and surfactants, so that corrosive ions and water molecules can easily pass through the coating, leading to poorer barrier properties. Incorporation of protective fillers into these coatings was shown as a viable way to address this issue. An example of compounds commonly used as fillers are phosphonic acids, which could act as corrosion inhibitors and adhesion promoters. In this study, two types of long chain acids, 12-aminododecylphosphonic acid hydrochloride and (12-phosphonododecyl)phosphonic acid in combination with a water-borne acrylic coating, were examined. As electrodes were used CuSn12 bronze electrodes whose surface was oxidized. Examined acids were applied on the surface of bronze by immersion method and brush method. The electrodes were exposed to a solution of acid rain (pH = 5) and EIS measurements were performed over a period of 10 days, and then the surface of the electrodes was analyzed with optical microscope. The pull-off test was also performed to determine the coating adhesion.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:694594
ProjectNumber: IP-2019-04-5030
Title: Razvoj novih rješenja za karakterizaciju i zaštitu brončane kulturne baštine izložene vanjskom okolišu
Title: Development of New Solutions for Characterization and Protection of Bronze Cultural Heritage Exposed to Outdoor Environment
Acronym: BroCH
Leader: Helena Otmačić Ćurković
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Environmental chemistry and green technologies
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra primijenjene kemije (sveučilišni/a magistar/magistra primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-11-15 14:08:02