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A kind of zinc-aluminum composite coating and construction technology thereof

A composite coating and construction technology, applied in epoxy resin coatings, coatings, devices for coating liquids on surfaces, etc. problem, to achieve the effect of good mechanical properties

Active Publication Date: 2016-08-24
JIANGSU XIN AN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the performance of the anti-corrosion coating material on the surface of the metal structure is poor and damaged, the metal structure body will also be exposed to rust.
[0003] At present, the following methods are used: the traditional anti-rust paint coating, the anti-rust paint film cannot completely prevent the hydration oxygen in the air from penetrating, and the polymer paint material has "aging phenomenon", which leads to cracks in the paint layer , bubbling and powdering
Once the paint layer cracks or peels off, the surface of the rigid structure will be corroded and spread rapidly; the use of cathodic protection or environmental control to reduce atmospheric humidity requires special detection and control devices, long-term maintenance, and high maintenance costs; Hot-dip plating and electroplating are not only costly, but also low in efficiency and serious in pollution, and the size of the steel structure is limited by the plating tank, so it is not suitable for large steel structures
[0004] The thermal spraying zinc-aluminum composite coating method is not limited by the size of the component, the process is simple and flexible, and the arc spraying zinc-aluminum composite material solves the atomization problem well, the arc spraying temperature is high, the speed is fast, the bonding strength is high, and the production efficiency is high. , good anti-corrosion effect; however, there are two problems in the use of thermal spraying zinc-aluminum composite materials, one is the poor density of the coating, which is prone to micropores, which in turn causes wear at the interface between the coating and the steel, resulting in "yellowing" of the coating and peeling off ", the second is that the steel surface is required to be clean and rough when spraying, otherwise its bonding strength will drop sharply, the coating will have poor adhesion and will easily peel off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A zinc-aluminum composite coating provided in this embodiment includes two components, A and B, and A and B are composed of two components. A and B components are mixed in a ratio of A:B=1:1. The count contains the following components:

[0039] The A component in the A component comprises the following components in parts by mass:

[0040] Polyaryl ether sulfone ketone modified resin: 10 parts, silicon carbide powder: 25 parts, fluorinated graphite: 18 parts; γ-aminopropyltriethoxysilane: 30 parts;

[0041] The B component in the described A component comprises the following components in parts by mass:

[0042] Black silicon carbide: 20 parts, fine-grained alumina: 30 parts, inorganic solvent: 2 parts, zinc oxide: 4 parts, epoxy resin: 12 parts;

[0043] The B component includes the following components in parts by mass:

[0044] m-phenylenediamine: 30 parts, simethicone: 5 parts, polydimethylsiloxane: 2 parts;

[0045] Among them, the polyarylether sulfone ketone...

Embodiment 2

[0058] This embodiment provides a zinc-aluminum composite coating, which includes two components, A and B, and A and B are composed of two components. A and B components are mixed according to the ratio of A:B=1:1. The gauge contains the following components:

[0059] The A component in the A component comprises the following components in parts by mass:

[0060] Polyaryl ether sulfone ketone modified resin: 15 parts, silicon carbide powder: 15 parts, fluorinated graphite: 15 parts; 3-methacryloxypropyltrimethoxysilane: 35 parts;

[0061] The B component in the A component comprises the following components in parts by mass:

[0062] Black silicon carbide: 10 parts, fine-grained alumina: 25 parts, inorganic solvent: 15 parts, zinc oxide: 0.8 parts, epoxy resin: 18 parts;

[0063] Component B includes the following components in parts by mass:

[0064] Polyamide: 20 parts, polyvinyl acetate: 8 parts, acrylic acid: 5 parts;

[0065] Among them, the polyarylether sulfone keto...

Embodiment 3

[0078] This embodiment provides a zinc-aluminum composite coating, which includes two components, A and B, and A and B are composed of two components. A and B components are mixed according to the ratio of A:B=1:1. The gauge contains the following components:

[0079] The A component in the A component comprises the following components in parts by mass:

[0080] Polyaryl ether sulfone ketone modified resin: 12 parts, silicon carbide powder: 20 parts, graphite fluoride: 20 parts; γ-(2,3 glycidoxy) propyltrimethoxysilane: 32 parts;

[0081] The B component in the A component comprises the following components in parts by mass:

[0082] Black silicon carbide: 30 parts, fine-grained alumina: 45 parts, inorganic solvent: 8 parts, zinc oxide: 6 parts, epoxy resin: 18 parts;

[0083] Component B includes the following components in parts by mass:

[0084] Diethylenetriamine: 50 parts, silicone: 2 parts, polymethylphenylsiloxane: 8 parts;

[0085] Among them, the polyarylether su...

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Abstract

The invention discloses a zinc-aluminum composite coating, which comprises two components, A and B. The A component is a two-component composition composed of A and B components. The A component in the A component includes polyarylethersulfone ketone modified Resin, silicon carbide micropowder, fluorinated graphite and coupling agent components, component B in component A includes silicon carbide, aluminum oxide, solvent, 0.8-6 parts of zinc oxide and epoxy resin component, component B Including curing agent, defoaming agent and leveling agent components: the present invention also designs a construction process of zinc-aluminum composite coating, the process includes: pretreatment, sandblasting, zinc spraying, aluminum spraying, sealing paint coating and the spraying process of topcoat; the zinc-aluminum composite coating of the present invention has excellent properties such as good wear resistance, mechanical properties, high temperature resistance, flame retardancy, radiation resistance, hydrolysis resistance, insulation stability, etc., the zinc-aluminum composite coating The simple construction process and low cost make the zinc-aluminum composite coating and the steel body have a strong binding force, which is very good for anti-corrosion of the steel body.

Description

technical field [0001] The invention relates to a zinc-aluminum composite paint and a construction process thereof, belonging to the technical field of material surface anticorrosion. Background technique [0002] The surface of the metal structure exposed to the wild environment is very easy to corrode due to chemical and electrochemical interactions with the surrounding environment. Therefore, it is necessary to coat the surface with an anti-corrosion layer to protect the main body of the metal structure from corrosion. However, when the performance of the anti-corrosion coating material on the surface of the metal structure is poor and damaged, the metal structure body will also be exposed to rust. [0003] At present, the following methods are used: the traditional anti-rust paint coating, the anti-rust paint film cannot completely prevent the hydration oxygen in the air from penetrating, and the polymer paint material has "aging phenomenon", which leads to cracks in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D181/06C09D7/12B05D7/14B05D3/12
Inventor 杨松林吴福娣陈晓兵
Owner JIANGSU XIN AN NEW MATERIALS TECH
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