Ovisnost zaštitnih svojstava vodorazrjedivog premaza o načinu izlaganja okolišu

undergraduate thesis

• Title (english): Dependence of protective properties of water-based coating on method of exposure to environment
• Author: Matea Burazin
• Mentor: Helena Otmačić Ćurković (mentor)
• Committee member: Helena Otmačić Ćurković (predsjednik povjerenstva)
• Committee member: Marijana Kraljić Roković (član povjerenstva)
• Committee member: Emi Govorčin Bajsić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2023-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Korozija predstavlja značajan problem za očuvanje kulturne baštine, a izloženost korozivnom okolišu može uzrokovati ozbiljno oštećenje ovih objekata. Korištenje premaza jedna je od brojnih metoda koje se danas provode kako bi se metalne konstrukcije zaštitile od korozije. Iako mnogi premazi osiguravaju dobru zaštitu, njihovo korištenje može doprinjeti onečišćenju okoliša zbog emisije hlapivih organskih tvari. S ciljem korištenja ekološki prihvatljivijeg rješenja za zaštitu metalnih materijala, u ovom radu ispitivana su svojstva vodorazrjedivog akrilatnog premaza na brončanoj površini u tri korozivna okoliša. Ispitivanja su provedena na uzorcima koji su bili kontinuirano ili ciklički izlagani simuliranoj kiseloj kiši, kao i vlažnoj komori u vremenskom periodu od 22 dana. Uzorci su periodički karakterizirani elektrokemijskim tehnikama - metodama linearne polarizacije i elektrokemijske impedancijske spektroskopije. Iz dobivenih rezultata je zaključeno da kod kontinuiranog izlaganja dolazi do pada zaštite u vremenu dok kod cikličko izlaganja dolazi do porasta korozijske zaštite.

Abstract (english)

Corrosion represents a significant problem for the preservation of cultural heritage and exposure to a corrosive environment can cause the serious damage to these objects. The application of coatings is one of the many methods used today to protect metal structures from corrosion. Although many coatings provide good protection, their widespread use can contribute to environment pollution due to the emission of volatile organic compounds. With the aim of using a more environmentally friendly solution for protection of metallic materials, in this work, the properties of acrylic waterborne coating on a bronze surface were examined in three corrosive environments. Measurements were conducted on samples that were either continuously or periodicaly immersed in simulated acid rain or exposed in condensation chamber over a period of 22 days. Samples were periodically characterized by electrochemical techniques –linear polarization method and electrochemical impedance spectroscopy. The obtained results showed that continuous exposure results in decrease of corrosion protection in time while cyclic exposure resulted in increase of corrosion protection.

• Keywords: korozivni okoliš; zaštita od korozije; vodorazjedivi premaz; bronca; linearna polarizacija; elektrokemijska impedancijska spektroskopija
• Keywords (english): corrosive environment; corrosion protection; waterborne coating; bronze; linear polarization; electrochemical impedance spectroscopy
• Language: croatian
• URN:NBN: urn:nbn:hr:149:804958
• Project: Number: 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 programme: Title: Materials Science and Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-11-29 14:06:15