Solvent-free epoxy zinc-rich anticorrosive paint and preparation method thereof

An epoxy zinc-rich, anti-corrosion coating technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problem that the surface of the coating is prone to pits, pinholes, orange peel, and the thickness of the coating film easily exceeds 150μm , poor storage stability of operational coatings, etc., to achieve extensive industrial anti-corrosion, excellent anti-corrosion performance, and promote sustainable development.

Active Publication Date: 2021-03-16
WUXI HUADONG ZINDN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the strengthening of people's awareness of environmental protection and the development of maintenance-free coating systems, long-lasting, environmentally friendly, and energy-saving solvent-free anti-corrosion coatings are increasingly used in engineering construction, and the shortcomings of solvent-based epoxy zinc-rich coatings are : The operability of the construction and the stability of the paint storage are poor, the paint film is easy to foam, and more importantly, the VOC content is high, and the solvent-based paint is usually not environmentally frien

Method used

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  • Solvent-free epoxy zinc-rich anticorrosive paint and preparation method thereof
  • Solvent-free epoxy zinc-rich anticorrosive paint and preparation method thereof
  • Solvent-free epoxy zinc-rich anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A solvent-free epoxy zinc-rich anti-corrosion coating, comprising A component and B component, wherein A component is calculated by weight, including:

[0041]

[0042] Component B includes the following components by weight fraction:

[0043] 4 parts of modified phenalkamine curing agent;

[0044] 1 part polyamide curing agent;

[0045] 0.25 parts of curing accelerator;

[0046] The weight ratio of component A to component B is 0.8:1; according to the weight ratio, component A and component B are mixed, stirred evenly and matured for 7-15 minutes before coating.

[0047] The specific preparation method is as follows:

[0048] ① Weigh the raw materials according to the above ratio, add the epoxy resin; then slowly add the active diluent, the stirring speed is 500-800r / min, and stir for 10-15 minutes;

[0049] ②Adjust the stirring speed to 800~1000r / min, add thixotropic agent and coupling agent during the stirring process, then keep stirring at 1000~2500 r / min, ke...

Embodiment 2

[0055] A solvent-free epoxy zinc-rich anti-corrosion coating, comprising A component and B component, wherein A component is calculated by weight, including:

[0056]

[0057] Contains the following B components by weight:

[0058] 2.5 parts of modified phenalkamine curing agent;

[0059] 2.5 parts of polyamide curing agent;

[0060] 0.4 parts of curing accelerator;

[0061] Preparation method: with embodiment 1.

[0062] The weight ratio of the A component to the B component is 1.2:1; according to the weight ratio, the A component and the B component are mixed, stirred and matured for 7 to 15 minutes before coating.

Embodiment 3

[0064] A solvent-free epoxy zinc-rich anti-corrosion coating, comprising A component and B component, wherein A component is calculated by weight, including:

[0065]

[0066] Contains the following B components by weight:

[0067] 2.5 parts of modified phenalkamine curing agent;

[0068] 2.5 parts of polyamide curing agent;

[0069] 0.3 parts of curing accelerator;

[0070] Preparation method: with embodiment 1.

[0071] The weight ratio of the A component to the B component is 0.95:1; according to the weight ratio, the A component and the B component are mixed, stirred evenly and matured for 7-15 minutes before coating.

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Abstract

The invention discloses a solvent-free epoxy zinc-rich anticorrosive paint, which is prepared by combining high-solid-content epoxy resin, an epoxy active diluent, a plasticizer, a coupling agent, a polyamine curing agent and an accelerator and adding a large amount of zinc powder and a small amount of glass flakes as anticorrosive fillers. The high-efficiency, high-volume solid content solvent-free epoxy zinc-rich anticorrosive paint is prepared. The product can form a film at low temperature, and has the advantages of favorable paint stability, low viscosity, no need of heating, favorable mechanical properties and favorable adhesive force. No solvent volatilizes during curing, pinholes in the coating can be eliminated, the compactness and isolation shielding performance of the coating are improved, excellent corrosion resistance is provided, no harmful VOC exists during production and construction, the environment is protected, and resources are saved; and the construction cost can be obviously reduced.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to a solvent-free epoxy zinc-rich anticorrosion coating and a preparation method thereof. Background technique [0002] Metal materials play a very important role in economic life; the phenomenon that metal materials undergo physical changes, chemical changes and electrochemical changes in a corrosive environment, resulting in performance changes until they are completely damaged, is called metal material corrosion. However, corrosion of metal materials is a serious problem facing the world. Corrosion not only consumes precious wealth, but also destroys normal life and production order. Corrosion and environmental pollution have attracted more and more attention. Anti-corrosion coatings are used to protect metals. It is the most effective and economical method, among which, anti-corrosion coating for metal structure equipment is currently the fastest and most effective met...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D5/10C09D7/20C09D7/63C08G59/60
CPCC09D163/00C09D5/106C09D7/20C09D7/63C08G59/60C08K2003/0893C08L2205/025C08L63/00C08K13/02C08K3/08C08K3/40C08K5/05C08K5/5435
Inventor 杨志华周贤辉王自龙
Owner WUXI HUADONG ZINDN TECH
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