In this study,with the epoxy resin and polyamide curing agent as the main body,a series of zinc-rich epoxy primers was prepared.The influence factors such as resin ratio,zinc powder content and shape,organic-inorganic hybrid agent content and curing agent system were analyzed and optimized.The result showed that when the mass ratio of epoxy resin E51 to 75%E20 is 4∶1,the mass fraction of zinc powder is 80%,the mass ratio of spherical zinc powder to flake zinc powder is 3∶1,the mass fraction of organic-inorganic hybrid agent is 1.8%,and the mass ratio of curing agent BS890-70X to BS853N is 1∶1,the prepared epoxy zinc-rich primer has fast drying speed,good adhesion and salt spray resistance.Compared with the commercially available epoxy zinc-rich primer,the developed epoxy zinc-rich primer has better appearance,aging resistance and corrosion resistance in the neutral salt spray environment.It can be widely used in anti-corrosion engineering of steel structure of oil tank and refining enterprise in petroleum and petrochemical industry.
epoxy zinc-rich primersalt spray resistancepetroleum and petrochemical industry
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