Preparation method of rosin-based thermal polymerization anti-corrosion film doped with cobaltous oxide nanoparticles with high pitting potential

Abstract

The invention discloses a preparation method of a rosin-based thermally polymerized anticorrosion film doped with cobaltous oxide nanoparticles with high pitting potential. Acrylamide is used as a monomer, azobisisobutyronitrile is used as an initiator, and cobaltous oxide nanoparticle The particles are used as dopants, and propylene pimaric acid (ethylenediamine) amide is used as crosslinking agent. A rosin-based thermally polymerized anticorrosion film doped with cobaltous oxide nanoparticles with high pitting corrosion potential is prepared by thermal polymerization. The film The layer has high pitting potential, good pitting corrosion resistance, simple and practical, and overcomes the shortcomings of low corrosion potential of the previous anti-corrosion film layer. The film layer can be applied to the anti-corrosion engineering of metal parts of electrical equipment such as air conditioners, electric water heaters, air conditioners, and refrigerators, and mechanical equipment such as tractors and cranes.

Description

technical field [0001] The invention relates to the field of anti-corrosion coating films, in particular to a preparation method of a rosin-based thermal polymerization anti-corrosion film doped with cobaltous oxide nanoparticles with high pitting corrosion potential. Background technique [0002] Due to the low pitting corrosion potential of the metal parts of electrical equipment such as air conditioners, electric water heaters, air conditioners, and refrigerators, and mechanical equipment such as tractors and cranes, they are easily corroded by the surrounding environment, especially metal parts. Long-term exposure to humid and corrosive media can easily cause pitting, powdering, and foaming. The current treatment method is to add a large amount of heavy metal compounds such as hexavalent chromium salt or lead tetraoxide to the polymer coating. However, these heavy metal lead plasmas are continuously precipitated in this type of anti-corrosion coating, which seriously pol...

AI Technical Summary

Problems solved by technology

The current treatment method is to add a large amount of heavy metal compounds such as hexavalent chromium salt or trilead tetroxide to the polymer coating. However, these heavy metal lead plasmas are continuously precipitated in this type of anti-corrosion coating, which seriously pollutes the ocean, river and soil environment. , have a serious impact on the global ecological environment and the human body

However, since there is no suitable alternative technology at present, it is of great significance to find a suitable alternative technology

[0003] Polyacrylamide can form a lot of hydrogen bonds due to the presence of amino groups and carbonyl groups, so polyacrylamide coatings have good corrosion resistance, permeability resistance, and wear resistance It is widely used in air conditioners, electric water heaters, air conditioners, refrigerators and other electrical equipment, as well as metal parts of mechanical equipment such as tractors and cranes, but the performance of polyacrylamide coating is single. The pitting potential of the coating is low. If the coating is kept in a humid or corrosive medium for a long time, it will cause pitting, foaming, powdering, etc., and the anti-corrosion performance is not good, which cannot meet the needs of the actual harsh environment.

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