Polyaniline anti-corrosion coating for underwater or wet surfaces and preparation method thereof

An anti-corrosion coating, polyaniline technology, applied in the field of coatings, can solve the problems of the underwater anti-corrosion coating being difficult to lasting, toxic and other problems

Active Publication Date: 2014-06-18
山东旭锐新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first technical problem to be solved by the present invention is to provide a non-toxic, non-polluting, stable underwater coating performance, anti-corrosion Long-lasting, salt-spray and salt-spray resistant polyaniline anti-corrosion coating for underwater or wet surfaces
[0005] The second t

Method used

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  • Polyaniline anti-corrosion coating for underwater or wet surfaces and preparation method thereof
  • Polyaniline anti-corrosion coating for underwater or wet surfaces and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0033] Example 1

[0034] A raw material for polyaniline anticorrosive coatings for underwater or wet surfaces includes component A and component B. The raw materials of component A include epoxy resin 50g, resin modifier 8g, polyaniline 5.5g, slow Etching agent 3.5g, additives 1g, pigments and fillers 22g; the raw material of the second component includes 20g curing agent; among them, polyaniline is intrinsic state polyaniline, doped with organic acids dodecylbenzenesulfonic acid and p-toluenesulfonic acid The conductive polyaniline is then dried at 85°C, and its particle size is 10-12μm.

Example Embodiment

[0035] Example 2

[0036] A raw material of a polyaniline anticorrosive coating used for underwater or wet surfaces includes component A and component B. The raw materials of component A include epoxy resin 35g, resin modifier 13.5g, polyaniline 3.5g, Corrosion inhibitor 1.5g, additives 1.5g, pigments and fillers 25g; the raw materials of component B include Mannich base epoxy resin curing agent 19g; among them, polyaniline is intrinsic state polyaniline, which is treated with citric acid and nonylnaphthalene sulfonate The acid-doped conductive polyaniline is then dried at 88°C to obtain the particle size of 10-15μm; the corrosion inhibitor is made of carboxylic acid modified polysiloxane, tetraisopropyl titanate, phytic acid It is compounded with methyldimethoxysilane according to the weight fraction ratio of 3.5:2.5:1.5:0.8.

Example Embodiment

[0037] Example 3

[0038] A raw material for polyaniline anticorrosive coatings for underwater or wet surfaces includes component A and component B. The raw materials of component A include epoxy resin 55g, resin modifier 6g, polyaniline 4.5g, slow Etching agent 2.5g, additives 1g, pigments and fillers 21g; the raw material of the second component includes 20g curing agent; among them, polyaniline is the intrinsic state polyaniline, and the organic acid dodecylbenzenesulfonic acid, salicylic acid and nonyl Conductive polyaniline doped with naphthalene sulfonic acid is then dried at 90°C to obtain a particle size of 12-14μm; the corrosion inhibitor is made of carboxylic acid-modified polysiloxane, tetraisopropyl titanate, Phytic acid and methyldimethoxysilane are compounded according to the weight ratio of 5:4:3:1.5; the pigments and fillers include iron red powder, titanium dioxide and mica powder according to the weight ratio of 15:15 :4 compounded; the resin modifier is aryl m...

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Abstract

The invention discloses a polyaniline anti-corrosion coating for underwater or wet surfaces. The anti-corrosion coating comprises a component A and a component B in parts by weight. The component A comprises 30-60 parts of epoxy, 5-20 parts of resin modifiers, 3-10 parts of polyaniline, 0.5-5 parts of corrosion inhibitors, 1-2 parts of additives, 20-30 parts of pigment filler; The component B comprises 14-30 parts of curing agent. The preparation method comprises the following steps of adding wetting agent and dispersing agent into polyaniline to allow the surface of polyaniline to be sufficiently moistened; sequentially adding epoxy, resin modifiers, pigment filler and corrosion inhibitors, stirring and then adding polyaniline which is subjected to surface treatment, stirring, evenly dispersing, adding leveling agent and defoamers; grinding to obtain the component A having a particle size of less than 35mum; the curing agent is taken as the component B. The polyaniline anti-corrosion coating prepared by the invention is non-toxic and has no pollution on the human body and is environmentally friendly and has not only good underwater adhesion, lasting corrosion resistance, and smooth surface. The coating is flexible and elastic.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyaniline anticorrosion coating used for underwater or wet surfaces. Background technique [0002] In the development of engineering technology in today's world, offshore engineering facilities, water conservancy engineering facilities, dams and wharves, ship emergency maintenance, wet mine pits and tunnel engineering, etc., all put forward high requirements for underwater anti-corrosion and wet surface anti-corrosion, even in rainy days or seaside low tide construction. requirements. Spain EURONAVY ES323, American Advanced Coatings Company 9400 series, etc., and some domestic companies have developed epoxy anti-corrosion coatings for underwater construction, such as CN101492586A, CN101781505A patented coatings, which are widely used in submarine pipelines, offshore and lake platforms, etc. The steel structure and cement structure basically solve the problem that the paint ...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D163/04C09D179/02C09D5/08C09D7/12
Inventor 王凤宪李云香陶书伟王德强
Owner 山东旭锐新材股份有限公司
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