Anti-separation and anti-corrosion environment-friendly polyaniline coating

Abstract

The invention discloses an anti-separation and anti-corrosion environment-friendly polyaniline coating comprising a component A and a component B, and the weight ratio of the component A to the component B is 10:1 to 20:1. The component A is prepared from the following components: 1, 73 g of liquid epoxy resin E44; 2, 13 g of dioctyl phthalate; 3, 2.5 g of OP-10; 4, 8 g of n-butyl alcohol; 5, 4 g of ammonium persulfate; 6, 2 g of distilled water; 7, 0.5 g of a 0.8 mol / L camphorsulfonic acid aqueous solution; 8, 6 g of phenylamine; 9, 0.8 g of methyl silicone oil; and 10, 9 g of neopentyl glycol diglycidyl ether. The component B is composed of the following components: 140 g of liquid aliphatic polyamine, 10 g of polyaniline, 10 g of quartz sand, 7 g of ethylene glycol monophenyl ether, 12 g of a talcum powder, and 3 g of ester gum. 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 an anti-shedding, 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 meta...

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