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Keywords

Spray coating, Roller brush, Polyester brush, Corrosion, Pipe, Epoxy

Document Type

Article

Abstract

Protecting carbon steel pipes in the petroleum industry is still a top priority due to the severe corrosive conditions. This study investigates the impact of three coating application techniques on the performance of a hybrid nanocomposite coating: pressured spray gun, roller brush, and polyester brush. A DCP 400 epoxy matrix supplemented with 0.5 weight percent NiCrSiFe metallic micro particles and 0.5 weight percent Zirconia (ZrO2) nanoparticles makes up the coating system. According to experimental data, the application technique has a major impact on the structural and protective qualities of the coating. Although larger layers (up to 169 μm for specimen S6) were created by manual application methods (polyester brush), they were distinguished by notable filler agglomeration and interior micro-voids. On the other hand, the spray-applied coating (S4) had better filler dispersion and a regulated, consistent thickness of 85.59 μm. The spray approach (S4) produced the maximum Micro-Vickers hardness of 35.1 HV, which is a 127% improvement over neat epoxy (15.4 HV), according to mechanical testing. Additionally, S4 demonstrated the most consistent electrochemical activity and the highest hydrophobic qualities with a contact angle of 107°. In contrast, because of the uneven distribution of particles, the polyester brush application (S6) exhibited the greatest corrosion rate (1.323 mm/year) representing clear increase of (141%) in comparison with S4 (sprayed specimen). According to the study's findings, the optimal technique for applying hybrid nanocomposite coatings is the air-pressurized spray method, which offers a strong, flawless barrier for protecting industrial pipelines.

DOI

10.30684/2412-0758.1562

First Page

151

Last Page

168

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