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Nanometer inorganic zinc-rich composite anticorrosive coating and preparation method thereof

A nano-inorganic, anti-corrosion coating technology, used in anti-corrosion coatings, alkali metal silicate coatings, coatings, etc. It is easy to industrialize large-scale production, improve scratch and corrosion resistance, and has strong bonding force.

Active Publication Date: 2016-01-27
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Inorganic zinc-rich coatings have the above-mentioned advantages, but there are also some disadvantages at the same time, for example: the coating of inorganic zinc-rich coatings is relatively "brittle" and has poor impact resistance; the coating has low scratch corrosion resistance in salt water, etc. Wait
These factors affect the corrosion resistance and comprehensive mechanical properties of inorganic zinc-rich coatings, limiting the wide application of the coatings

Method used

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  • Nanometer inorganic zinc-rich composite anticorrosive coating and preparation method thereof
  • Nanometer inorganic zinc-rich composite anticorrosive coating and preparation method thereof
  • Nanometer inorganic zinc-rich composite anticorrosive coating and preparation method thereof

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preparation example Construction

[0043] And in a more specific preferred implementation case, the preparation method of described nano-modified polyaniline can comprise:

[0044] Under the condition that the stirring speed is not lower than 1000 rev / min, the nano-attapulgite and aniline with a diameter of 20nm to 50nm and a length of 0.5μm to 3μm are added to water and mixed to form a suspension.

[0045] Under the condition of continuous stirring, add a surface modifier and a dopant to the suspension, and then slowly add an oxidant, filter after the reaction, take the filtrate to wash and dry, and obtain the nano-modified polyaniline.

[0046] Wherein, the surface modifier may be at least selected from cetyltrimethylammonium bromide or dodecyltrimethylammonium bromide, and is not limited thereto.

[0047]Wherein, the dopant may be at least selected from camphorsulfonic acid or sulfosalicylic acid, and is not limited thereto.

[0048] Wherein, the oxidizing agent may be ammonium persulfate, but is not limite...

Embodiment 1

[0069] 1) Take 85 grams of potassium silicate-sodium silicate solution with a modulus of 3.5, add 13 grams of pure acrylic emulsion, 2 grams of wetting and dispersing agent and 1 gram of defoamer, stir to make it completely dispersed, and make Group A Minute;

[0070] 2) Add 8 grams of nano-modified polyaniline to the above-mentioned component A solution, stir for 1.5 hours at 1000 rpm to disperse the nano-modified polyaniline evenly in the liquid, and finally add 292 grams of 500-mesh flake zinc powder, the mass ratio of component A and component B is 1:3, and keep stirring for 30 minutes to obtain nano inorganic zinc-rich composite anticorrosion coating.

[0071] The nano inorganic zinc-rich composite anti-corrosion paint of this embodiment was sprayed on the tinplate substrate treated with sandpaper and the iron plate treated with sandblasting by high-pressure air spraying. After being completely cured, the coating film sample Y1 was obtained. Reserved for performance eva...

Embodiment 2

[0073] 1) Take 80 grams of potassium silicate solution with a modulus of 4.0, add 14 grams of styrene-acrylic emulsion, 2.5 grams of wetting and dispersing agent and 1.5 grams of defoamer, stir to make it completely dispersed, and make component A.

[0074] 2) Add 10 grams of nano-modified polyaniline to the above-mentioned component A solution, stir for 1.5 hours at 1000 rpm to disperse the nano-modified polyaniline evenly in the liquid, and finally add 290 grams of 600-mesh flake zinc powder, the mass ratio of component A and component B is 1:3, and keep stirring for 30 minutes to obtain nano inorganic zinc-rich composite anticorrosion coating.

[0075] The nano inorganic zinc-rich composite anti-corrosion paint of this embodiment was sprayed on the tinplate substrate treated with sandpaper and the iron plate treated with sandblasting by high-pressure air spraying. After being completely cured, the coating film sample Y2 was obtained. Reserved for performance evaluation tes...

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Abstract

The invention discloses a nanometer inorganic zinc-rich composite anticorrosive coating and a preparation method thereof. The anticorrosive coating is prepared through mainly mixing a component A with a component B, wherein the component A comprises a silicate adhesive, an acrylic emulsion, a wetting dispersant and an antifoaming agent; and the component B comprises flake zinc powder and nano-modified polyaniline, and the nano-modified polyaniline is a fibrous core-shell structured attapulgite-polyaniline composite material. The preparation method of the coating comprises the following steps: uniformly mixing the silicate adhesive, the acrylic emulsion, the wetting dispersant and the antifoaming agent to obtain the component A; and adding the component A to the component B, and uniformly mixing to obtain the anticorrosive coating. The nanometer inorganic zinc-rich composite anticorrosive coating has the advantages of strong combination force with a metal base material, salt spray resistance, scrape corrosion resistance and impact resistance, and can be used in various different situations; and the preparation method has the advantages of simplicity, good controllability, easy operation, low production cost and easy industrial production.

Description

technical field [0001] The invention relates to an inorganic zinc-rich composite anti-corrosion coating, in particular to a nanometer inorganic zinc-rich composite anti-corrosion coating and a preparation method thereof, belonging to the field of anti-corrosion coatings. Background technique [0002] Corrosion of metal refers to the phenomenon that the metal is destroyed by the chemical or electrochemical action of the environmental medium. The corrosion of metals spreads all over the national economy and brings huge losses to the national economy. According to statistics, about 100 million tons of metals are corroded and scrapped in the world every year, accounting for 20% to 40% of the annual output. At present, the annual economic loss caused by corrosion of metal structures in the world has reached hundreds of billions of dollars. For a long time, people have used a variety of techniques to protect metals from corrosion. Among them, one of the most effective and commo...

Claims

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Application Information

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IPC IPC(8): C09D1/04C09D5/10C09D7/12C08G73/02C08K7/10
Inventor 刘丰华许高杰程昱川郭建军
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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