Flame retardant anti-corrosion environment-friendly polyaniline coating

Abstract

The invention discloses a flame retardant anti-corrosion environment-friendly polyaniline coating. The coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is (10 to 1)-(20 to 1); the component A is prepared from the following components: (1) 70g of liquid epoxy resin E44, (2) 24g of dioctyl phthalate, (3) 2.5g of OP-10, (4) 8g of n-butyl alcohol, (5) 4g of ammonium persulfate, (6) 2g of distilled water, (7) 0.5g of 0.8mol/L camphorsulfonic acid water solution, (8) 6g of aniline, (9) 0.8g of methyl silicone oil and (10) 4g of neopentyl glycol diglycidyl ether; the component B comprises the following components: 140g of liquid fatty polyamine, 10g of polyaniline, 10g of xanthan gum, 7g of ethylene glycol phenyl ether, 12g of methylcellulose and 3g of turpentine silicone oil. The coating has the advantages of high polyaniline content, good anti-corrosion property, no pollution, low cost, and the like.

Description

technical field [0001] The invention relates to a flame-retardant, anti-corrosion and environment-friendly polyaniline coating. Background technique [0002] The loss caused by metal corrosion to human beings is staggering. According to statistics, the global annual metal loss due to corrosion is as high as 20%-40% of 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 polluted by heavy met...

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.

The conventional methods for combining polyaniline with resin mainly include: Dissolution 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; Physical blending method: such as ball milling method, consumes a lot of energy and time, and its dispersion and stability in the resin are poor, which ultimately affects the performance of polyaniline's anti-corrosion performance; (3) first dissolve polyaniline in the amine curing agent , and then compounded with epoxy resin, this method has insurmountable defects: the content of polyaniline is low, and the content with the best anti-corrosion effect cannot be achieved