The invention discloses an environment-friendly long-acting
metal antirust agent, and relates to the technical field of
urolithin, in particular to an environment-friendly long-acting
metal antirust agent. The environment-friendly long-acting
metal antirust agent is prepared from the components in percentage by weight: 15-25% of
sulfuric acid, 20-35% of
citric acid, 3-10% of
ethylene glycol, 1-3%of
ethylenediamine tetraacetic acid, 0.1-0.5% of
polyvinylpyrrolidone and the balance of water. According to the environment-friendly long-acting metal antirust agent, the
sulfuric acid is an inorganic strong acid, has good
dispersity, can be completely ionized in a solution, and is beneficial to improving the
conductivity, the dispersing capacity and the
anode current efficiency of a
polishing solution, so that the surface of stainless steel is polished uniformly; and the
citric acid is low in acidity and large in
viscosity, can achieve a dissolving effect and form a
passivation film on the surface of the stainless steel in the
polishing process, and prevents over-
corrosion of the stainless steel; and the
ethylene glycol is adsorbed on the surface of an
anode, is beneficial to promoting formation of a
diffusion layer, can form a thin film on the surface of the stainless steel together with the
citric acid, prevents over-
corrosion of the stainless steel, and makes the surface of the polished stainless steel be bright and fine.