Environment friendly anti-corrosive paint and preparation thereof

Abstract

The invention discloses environmental-friendly anti-corrosive polyaniline paint which has high content of polyaniline, good anti-corrosion performance and low cost, causes no pollution and is suitable for preventing steel, magnesium and other metals from being corroded. The environmental-friendly anti-corrosive polyaniline paint contains component A and component B which have the weight ratio of 7:1 to 17:1, wherein the component A contains the following components according to the portion by weight: 40-80 portions of liquid epoxy resin, 4-40 portions of plasticizing agent, 0.1-4 portion(s) of emulsifying agent OP-10, 4-10 portions of small-molecular fatty alcohol, 0.1-15 portion(s) of ammonium persulfate, 0.1-3 portion(s) of distilled water, 0.1-2 portion(s) of 0.4-0.8mol / L camphorsulfonic acid solution, 0.1-16 portion(s) aniline, 0.5-1 portion of defoaming agent and 4-20 portions of reactive diluent.

Description

technical field [0001] The invention relates to an environment-friendly polyaniline anticorrosion coating and a preparation method thereof. Background technique [0002] The loss caused by metal corrosion to human beings is staggering. According to statistics, the annual metal loss caused by corrosion in the world is as high as 20%-40% of the global metal production, and the economic loss is about 1 trillion US dollars. Practice has proved that the use of coatings for corrosion protection of metals is the most economical, practical and effective method. However, the current commonly used anti-corrosion coatings contain a large amount of organic solvents, which cause great pollution to the environment during the construction process and pose a huge threat to the health of workers; at the same time, commonly used anti-corrosion coatings are also rich in zinc, which not only consumes a lot of zinc resources, but also affects the health of workers. The environment is seriously ...

AI Technical Summary

Problems solved by technology

[0004] Although polyaniline has excellent anti-corrosion properties, its mechanical processing properties and compatibility with resins are poor, which limits its use.

Now the conventional methods of combining polyaniline with resin mainly include: ①Dissolution method: use a special solvent to dissolve and add it to the resin. This method will cause environmental pollution, poor construction conditions, and the expensive solvent will increase the cost sharply; : as the ball milling method, it consumes a large amount of energy and time, and its dispersion and stability in the resin are poor, which finally affects the performance of polyaniline's anticorrosion performance; (3) first dissolve polyaniline in amine curing agent, and then mix Oxygen resin compounding, this method has insurmountable defects: the content of polyaniline is low, and the content with the best anti-corrosion effect cannot be achieved