Study of the protection efficiency offered by coatings applied under non-standard and/or innovative conditions

U ovom radu obrađena je površinska zaštita metala od korozije pomoću IC sušivih premaza, te ustanovljena razlika u brzini sušenja premaza, svojstvima premaza te količini HOS-a koja se ispušta prilikom sušenja premaza putem IC-a u odnosu na konvencionalno sušenje premaza na sobnoj temperaturi. Jedan od ciljeva ispitivanja je također bio odrediti kako udaljenost od izvora IC zračenja utječe na brzinu sušenja premaza. Za ispitivanje i karakterizaciju takvih premaza korištena je metoda elektrokemijske impedancijske spektroskopije (EIS) te metoda diferencijalne pretražne kalorimetrije (DSC) Za određivanje kvalitete premaza prema standardu ISO 12944-6 korišten je test prionjivosti premaza odnosno pull off test, sukladno s normom EN ISO 4624. Na temelju provedenih ispitivanja, ustanovljene su prednosti i nedostaci sušenja premaza pomoću IC tehnologije u odnosu na konvencionalnu metodu sušenja premaza. Tehnike sušenja uspoređene su s ekonomskog, ekološkog te energetskog aspekta. Napravljena je analiza isplativosti uvođenja takve tehnologije u postrojenja, u odnosu na postrojenje u kojem su premazi sušeni na konvencionalan način.In this thesis, surface protection technology of metal using IR dryed coatings was analyzed, and it was also pointed the difference in speed, characteristics and quantity of VOC released between IR dryed coatings, compared to the coatings dryed in a convencional way on room temperature. Also, the other purpose of these tests was to find how the distance from the IR emiter affects the drying speed of the coatings. For the testing and characterization of such coatings, the method of electrochemical impedance spectroscopy (EIS) and differential scanning calorimetry (DSC) were used. For determinating the quality of the coating, in accordance with the norm EN ISO 12944- 6, pull off test was conducted to determine the adhesion of such coatings, in accordance with the norm EN ISO 4624. Based on the tests that were carried out, the advantages and disadvantages of drying the coatings with IR technology were compared with the conventional method of drying the coatings. The drying methods were compared from the economical, ecological and energy related aspects. An analysis on the feasibility of introducing such technology into plants was made, compared to a facility with a conventional method of drying the coatings