Solvent-free type heavy anti-corrosion coating based on secondary doped polyaniline nanometer material

Abstract

The invention relates to a solvent-free type heavy anti-corrosion coating based on a secondary doped polyaniline nanometer material and belongs to the technical field of heavy anti-corrosion coating. The solvent-free type heavy anti-corrosion coating is characterized by comprising a component A and a component B; the weight ratio of the component A to the component B is 10:(2.6-3.2); the component A comprises the following components by weight percent: 32-40% of liquid epoxy resin, 7-18% of a nuclear shell rubber flexibilizer, 6-10% of a reactive diluent, 0.6-1.4% of a silane coupling agent, 1.2-2.5% of a dispersing agent, 0.3-0.7% of a de-foaming agent, 1.5-2.4% of a sterilizing agent, 0.6-1.2% of a thixotropic agent, 1.6-2.5% of a flatting agent, 4-12% of zinc phosphate, 4-8% of mica powder, 3.5-20% of superfine talcum powder and 7-12% of titanium dioxide, wherein the sum of the weight percent of the components is 100%; the component B comprises the following components by weight percent: 44-56% of phenolic amine, 20-44% of modified polyamide, 1.6-2.4% of a dispersing agent, 0.2-0.6% of a de-foaming agent, 2-6% of nanometer graphite powder, 7-15% of polyaniline and 0.4-0.8% of a thixotropic agent, wherein the sum of the weight percent of the components is 100%. The anti-corrosion coating provided by the invention is environmentally friendly and nontoxic and has the advantages of excellent mechanical properties, low surface processing requirement, applicability on wet and even water-containing metal substrate, excellent mold-proof and antibacterial properties, excellent corrosion protection and corrosion inhibition, high site construction operability, and the like.

Description

[0001] This patent application claims the priority of the Chinese invention patent application with the application number "201710012191.7", the name "a solvent-free heavy-duty anti-corrosion coating based on secondary doped polyaniline nanomaterials", and the application date "2017.01.06". right. technical field [0002] The invention relates to a solvent-free heavy-duty anti-corrosion coating based on secondary doped polyaniline nanomaterials, belonging to the technical field of metal material anti-corrosion. Background technique [0003] Metal materials have unique engineering characteristics and excellent physical and chemical properties. They are widely used in ports, bridges, and metal structures in power plants, chemical plants, and metallurgical enterprises. They are indispensable materials in national economic and social construction. It is worth noting that metal materials are generally corroded in the atmospheric environment, especially in the humid environmen...

AI Technical Summary

Problems solved by technology

But the coating of this invention is general to band rusty surface adhesive force, simultaneously because curing agent is colorless, even if the proportioning deviation of main agent and curing agent is very big also difficult to see when preparing like this on construction site, and the uncertain factor of construction site Many, it is often difficult for workers to carry out effective quality control during preparation, which can easily cause the coating after construction to fail to meet the design requirements

[0006] Chinese patent CN102382552B discloses a low-temperature curing solvent-free epoxy anti-corrosion coating and its preparation method. It is a low-temperature (4°C) curing solvent-free coating with fast curing speed, but the epoxy anti-corrosion coating of the invention has a short service life, High toxicity, high surface treatment requirements, general adhesion, difficult to control the ratio of on-site preparation, etc.

However, the impact resistance of the product of this invention is average, and at the same time, the proportion of preparation on the construction site is difficult to control, which affects the quality of the coating after survival

Due to the high moisture content of the atmosphere in coastal areas and near river basins, it is easy to bring oxygen to the metal surface, and there are chemical corrosion, electrochemical corrosion and microbial corrosion. It can be used on the surface of wet or even water-containing metal substrates, has good anti-mold and antibacterial properties, excellent anti-corrosion and corrosion inhibition performance, and is a solvent-free epoxy anti-corrosion coating with strong controllability in the proportion of construction site preparations. At present, it has the above characteristics at the same time There are few relevant reports about the corresponding products

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