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Waterborne epoxy zinc-rich coating modified by nano conductive carbon material and preparation method thereof

A water-based epoxy zinc-rich, nano-conductive technology, used in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of increasing the cost of steel structure painting and maintenance, short effective anti-corrosion time, etc., to improve anti-corrosion performance, Improve flexibility and enhance the effect of current conduction

Active Publication Date: 2016-09-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effective anti-corrosion time of epoxy zinc-rich coatings currently on the market is relatively short, only 3-5 years, which increases the cost of coating and maintenance of steel structures

Method used

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  • Waterborne epoxy zinc-rich coating modified by nano conductive carbon material and preparation method thereof
  • Waterborne epoxy zinc-rich coating modified by nano conductive carbon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 0.35 g of hydroxyl multi-walled carbon nanotubes and ultrasonically disperse them in 10 ml of deionized water to prepare multi-walled carbon nanotubes slurry;

[0028] (2) Add 100g of epoxy emulsion, 1g of FX600, 1g of AP7015 and 50ml of deionized water into the mixing tank of the high-speed disperser, stir at 200r / min for 20 minutes, and disperse evenly;

[0029] (3) Add 156g of zinc powder and 7.5g of sodium montmorillonite successively while continuing to stir, and stir at 600r / min;

[0030] (4) Add the multi-walled carbon nanotube slurry prepared in (1) gradually to the slurry obtained in (3), and disperse at a high speed of 1500r / min for 30 minutes to prepare component A;

[0031] (5) Add 40g of amine-modified curing agent emulsion (component B) with a solid content of 50% to component A, stir gently, and sieve to obtain nano-conductive carbon material modified water-based zinc-rich epoxy coating;

[0032] (6) Spray the prepared nano-conductive carbon m...

Embodiment 2

[0034] (1) Weigh 0.56 hydroxyl multi-walled carbon nanotubes and ultrasonically disperse them in 10ml deionized water to prepare multi-walled carbon nanotubes slurry;

[0035] (2) Add 100g of epoxy emulsion, 1g of FX600, 1g of AP7015 and 50ml of deionized water into the mixing tank of the high-speed disperser, stir at 200r / min for 20 minutes, and disperse evenly;

[0036] (3) Add 156g of zinc powder and 7.5g of sodium montmorillonite successively while continuing to stir, and stir at 600r / min;

[0037] (4) Add the multi-walled carbon nanotube slurry prepared in (1) gradually to the slurry obtained in (3), and disperse at a high speed of 1500r / min for 30 minutes to prepare component A;

[0038] (5) Add 40g of amine-modified curing agent emulsion (component B) with a solid content of 50% to component A, stir gently, and sieve to obtain nano-conductive carbon material modified water-based zinc-rich epoxy coating;

[0039] (6) Spray the prepared nano-conductive carbon material m...

Embodiment 3

[0041] (1) Weigh 0.98 g of hydroxyl multi-walled carbon nanotubes and ultrasonically disperse them in 20 ml of deionized water to prepare multi-walled carbon nanotubes slurry;

[0042] (2) Add 100g of epoxy emulsion, 1g of FX600, 1g of AP7015 and 50ml of deionized water into the mixing tank of the high-speed disperser, stir at 200r / min for 20 minutes, and disperse evenly;

[0043] (3) Add 156g of zinc powder and 7.5g of sodium montmorillonite successively while continuing to stir, and stir at 600r / min;

[0044] (4) Add the multi-walled carbon nanotube slurry prepared in (1) gradually to the slurry obtained in (3), and disperse at a high speed of 1500r / min for 45 minutes to prepare component A;

[0045] (5) Add 40g of amine-modified curing agent emulsion (component B) with a solid content of 50% to component A, stir gently, and sieve to obtain nano-conductive carbon material modified water-based zinc-rich epoxy coating;

[0046] (6) Spray the prepared nano-conductive carbon m...

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Abstract

The invention discloses a water-based epoxy zinc-rich paint modified by a nano-conductive carbon material and a preparation method thereof. The coating consists of two components, A and B, in which component A contains water-based epoxy emulsion, nano-conductive carbon material, zinc powder, water-based defoamer, water-based wetting and dispersing agent and other components; component B is modified amine Hardener emulsion. Its preparation method: (1) Prepare nano-conductive carbon material water-based slurry; (2) Add water, water-based epoxy emulsion, water-based defoamer, and water-based wetting and dispersing agent into the stirring tank, stir at low speed to disperse evenly, and then add Zinc powder, anti-sedimentation agent and nano conductive carbon material slurry, etc., are dispersed at high speed to obtain nano conductive carbon material modified waterborne epoxy zinc-rich coating component A; (3) Add component B to component A, stir Evenly, pass through a sieve. The nano conductive carbon material modified epoxy anticorrosion coating obtained by the invention has good corrosion resistance and impact resistance.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to a water-based epoxy zinc-rich coating modified by a nano-conductive carbon material and a preparation method thereof Background technique [0002] The phenomenon of metal corrosion pervades all fields of national economy and national defense construction. The corrosion of metal materials has greatly affected the service life and safety of metal structures, instruments and equipment, bridges, buildings, vehicles, etc., and the damage is very serious. According to statistics, the annual economic loss caused by metal corrosion in developed countries in the world accounts for about 3.5% to 4.2% of their gross national product, which exceeds the sum of the annual losses of various natural disasters (fire, wind disaster and earthquake, etc.). The direct loss caused by corrosion in my country reaches 600 billion yuan every year, accounting for about 1.5% of GDP, and there is an in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D5/10C09D7/12
Inventor 崔中越刘香兰田兴友郑康胡坤林永兴包超陈林张献
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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