Preparation method of rosin-based long oil alkyd resin anticorrosive enamel with high pitting potential

Abstract

The invention discloses a preparation method of rosin-based long oil alkyd resin anticorrosive enamel with high pitting potential. According to the preparation method, dry long oil alkyd resin and propylene pimaric acid (ethylenediamine) amide serve as film-forming substances, isobutanol serves as a solvent, active calcium carbonate, bentonite, dispersant polyethylene glycol 200, leveling agent polyether modified polydimethylsiloxane copolymers and drier naphthenic acid iron salt are added, and after high-speed stirring, the rosin-based long oil alkyd resin anticorrosive enamel with the high pitting potential can be obtained. The enamel has high pitting potential and high pitting resistance, and can be applied to anti-corrosion projects in the fields such as metal railings of house balconies, petrochemical equipment, pipelines, offshore oil platforms, dock facilities and ships.

Description

technical field

[0001] The invention relates to the field of enamel, in particular to a method for preparing a rosin-based long-oil alkyd resin anticorrosive enamel with high pitting corrosion potential. Background technique

[0002] Due to the low pitting potential of petrochemical equipment, pipelines, offshore oil platforms, ships and other metal material equipment, they are extremely vulnerable to corrosion by the atmospheric environment, especially the parts of ship equipment below the waterline due to long-term immersion in corrosive media such as sodium chloride It is easy to cause pitting, foaming, cracking and shedding. . The current treatment method is to add a large amount of heavy metal compounds such as lead tetraoxide to the paint formula. 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, and affects the global ecological environment and ...

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