Naslov
A study on the influence of waterborne coating application parameters on its protective properties

Autori
Gorišek, Petra ; Filipović, Martina, Kapitanović Angela, Otmačić Ćurković Helena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28th Croatian Meeting of Chemists and Chemical Engineers / Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2022, 189-189

Skup
28th Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
waterborne coating ; corrosion ; impedance

Sažetak
It is known that metals are prone to corrosion under the influence of aggressive compounds from the environment, and the coatings are widely used method for metal corrosion protection. The requirement for a good coating is its impermeability to corrosive species, good adhesion, and the absence of cracks and irregularities that can lead to the initiation of corrosion. In the last few decades, waterborne coatings have been developed as a substitute for organic coatings due to the smaller amount of harmful solvents. They consist of a larger proportion of water as a solvent, which presents a challenge in their application. A lower volatility of water, compared to common organic solvents, prolongs the drying time which usually requires the drying at higher temperatures. Inadequate drying conditions may lead to substrate corrosion and result in lower adhesion of the coating. Another important property is the film thickness, which directly affects porosity, stability, quality and level of protection. The aim of this work is to investigate the influence of different application parameters of a waterborne acrylic coating on the corrosion protection of bronze. The study is conducted by electrochemical impedance spectroscopy (EIS) in terms of continuous immersion in simulated acid rain (pH 5). The emphasis is on examining the curing duration and temperature as well as the coating thickness and number of the layers applied. In addition, the influence of coating dilution and application technique (brush, spraying, knife applicator) are investigated.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA