Anti-corrosion polymer coatings for vehicles protection

Abstract

Epoxy diane oligomer ED-20, polyethylene polyamine PEPA hardener, powdered synthesized iron/titanium carbide mixture with dispersion of 10...12 μm, and the filler of plant origin with dispersion of 0.4...0.6 μm were used to form anticorrosive coatings. The investigation of the change in the value of resistivity and specific capacity in the diesel fuel environment was carried out, taking into account the rational ratio of differently dispersed fillers in the epoxy binder. The decrease in the resistivity of protective coatings by 1.5...1.6 times relative to the epoxy matrix was achieved. At the same time, the correlation with the value of the capacitance, which decreases by 1.8...2.0 times, respectively was established. Additionally, visual analysis of the surface of the developed coatings was carried out. They were kept for 6552 h in the river water at variable temperatures - T = 263...293 ± 2 K. For coatings containing the rational combination of two fillers, no defects in the form of cracks, peeling, and swelling were observed.