Passivation of Carbon Steel Using Intelligent Epoxy Paint

Abstract

This paper presents the production of an epoxy paint associated with a determined concentration of PAni emeraldine base binder, in order to increase dispersion of PAni polymer chains in the paint allow physical contact between PAni chains, the electrolytic medium, and the metal of interest. The coating called Intelligent Epoxy Paint (IEP) seeks to potentialize the electrolytic capacity of PAni to produce passivation, differentiated research which uses PAni in oxidized and conductive form as paint pigment that needs high PAni concentrations. The physicochemical characterization and morphological presented results that indicate the preservation of the desirable properties of PAni in order to make the passivation process possible. The electrochemical tests showed the passivation and/or maintenance of the passivation of the metal of interest, without the need to apply an external current.

A Novel Z Profile of Pultruded Glass-Fibre-Reinforced Polymer Beams for Purlins

“…Equation ( 4) is the formula for calculating shear stress. Maximum deflection occurs in the middle of the span of the purlin structure and is calculated by Equation (5). Referring to Table 9.5.b of ACI 318-19 [37], the magnitude of the deflection was limited to L/180, as shown in Equation (6).…”

“…Hence, protecting the purlin material from the corrosive fertiliser plant environment requires regular maintenance. Coating the purlin surface with polymer layers is a popular corrosion protection mechanism [5,6]. Unfortunately, field experience indicates that this method is expensive and less effective.…”

Corrosion Protection Efficacy of the Electrodeposit of Poly (N-Methyl Pyrrole-Tween20/3-Methylthiophene) Coatings on Carbon Steel in Acid Medium

“…In recent years, the protection of metal surfaces by using conducting polymers as developed coating materials has become one of the most captivating research domains [1][2][3][4][5][6][7][8][9]. Corrosion of metals and their alloys represents an appreciable economic and industrial concern.…”

“…Thus, the objectives of electrodeposition of these coatings on different metals and their alloys and assessing their corrosion protection features have led to increasing attentiveness. Conducting polymers, such as polyaniline, polypyrrole, polythiophene and its derivatives, are the most frequently utilized for protective coatings [4][5][6][7][8][9][10][11][12][13]. Thus, integration of hydrophobic functionary groups is assumed to enhance the polymer protection performance.…”

“…The efficiency of these protecting films ensures that a barrier to the substrate can be affected by diversified elements: the type of conducting polymer, the electrodeposition procedure that has been utilized on the electrode's surface and the corrosive solution [16][17][18][19][20][21][22][23][24][25]. The employment of electrochemical polymerization, technical, nanostructured coatings, implementing organic or inorganic coatings and cathodic and anodic protection are procedures for the anticorrosion features of metallic materials [4][5][6][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Metallic materials are widely used in diversified sectors, such as: chemical manufacturing, oil making and refining, the construction industry, machinery equipment, technological equipment and marine practices; this has improved the investigation of corrosion defense in differing aggressive media [34][35][36][37].…”