In Slovenia the technique of vacuum blasting surface and fire retardant coatings is very rarely used, and in fact almost unknown. We were therefore interested in the properties that this coating technique gives to the coating system. First, the basic properties of the coating systems were determined: Viscosity, gloss, dry film thickness and adhesion. This technique can also be used to apply fire retardant coatings. Four fire retardant coatings were used and their fire behaviour was determined using the single flame source test. We found that the thickness varied depending on the side of the test piece. In addition, we found that the thickness affects most of the properties of each surface system. The highest film thickness was obtained for the system with Helios S. In the adhesion tests, we obtained adhesion fractures. In the gloss test, the surface treated with Helios S proved to be the most matte. No significant differences were observed in the fire performance itself among the treatments. With the exception of the thickest film, we observed that flaming particles fell off. In the corrosivity test, none of the test metals corroded with the paint. The corrosivity test showed that HN is the most corrosive coating. While for the other coating, we did not observe a significant difference in the corrosivity of the screws and nails compared to those in the control samples.
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