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Epoxy anticorrosive paint added with carbon nanotubes and flaky zinc powder

A technology of epoxy anti-corrosion coatings and scaly zinc powder, which is applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., and can solve the problems of easy precipitation and agglomeration during storage and application, transverse copolymerization damage, specific gravity of zinc powder, etc. problems, achieve good storage stability, extremely low porosity, and large specific surface area

Inactive Publication Date: 2020-12-29
朱晓林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The zinc powder content of epoxy zinc-rich primer is generally more than 50%. If the zinc powder content in the coating is too high, the coating will be porous and cause transverse copolymerization damage.
The specific gravity of zinc powder is relatively heavy. It is difficult to disperse during the production and preparation of coatings. It is prone to precipitation and agglomeration during storage and application. At present, metal zinc resources are becoming more and more scarce. The pressure of environmental protection and people's higher requirements for anti-corrosion performance , the traditional epoxy zinc-rich primer has no better breakthrough in the development of the industry, and the application of single-walled carbon nanotubes and scaly zinc powder has brought a new upgrade to epoxy zinc-rich products

Method used

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  • Epoxy anticorrosive paint added with carbon nanotubes and flaky zinc powder
  • Epoxy anticorrosive paint added with carbon nanotubes and flaky zinc powder
  • Epoxy anticorrosive paint added with carbon nanotubes and flaky zinc powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Component A: Weigh 20g of xylene, 7g of n-butanol, and 0.1g of carbon nanotubes, ultrasonically disperse for 5min, then add 2g of polyamide wax, stir at high speed for 20-30min, pay attention to the stirring speed, do not let the material splash. Then slowly add 20g of epoxy resin, and then add 25g of scaly zinc powder. Be careful not to cause serious dust and powder accumulation during the addition. Wash the container wall with 5.9g of xylene, and then adjust the position of the dispersion plate to avoid mixing. Generate bubbles, then disperse at high speed for 15-20min, check that the fineness is less than 30μm, stop stirring, and keep stirring at medium speed for 60min. Pack it after filtering with a 100 mesh filter.

[0028]Component B: Weigh 5g curing agent, add 12g xylene, 3g n-butanol, stir at medium speed to form slurry.

[0029]Mix components A and B during use, and use it within 2h after mixing at low speed. And filter with 100 mesh filter before spraying.

Embodiment 2

[0031]Component A: Weigh 25g of xylene, 10g of n-butanol, and 1g of carbon nanotubes, ultrasonically disperse for 10min, then add 3g of montmorillonite, stir at high speed for 20-30min, pay attention to the stirring speed, do not let the material splash. Then slowly add 30g of epoxy resin, and then add 20g of scaly zinc powder. Be careful not to cause serious dust and powder accumulation during the addition. Wash the container wall with 11g of xylene, and then adjust the position of the dispersion plate to avoid mixing Bubbles, then disperse at high speed for 15-20min, check that the fineness is less than 30μm, stop stirring, and keep stirring at medium speed for 60min. Pack it after filtering with a 100 mesh filter.

[0032]Part B: Weigh 7g of curing agent, add 10.4g of xylene and 2.6g of n-butanol, stir at medium speed to form a slurry.

[0033]Mix components A and B during use, and use it within 2h after mixing at low speed. And filter with 100 mesh filter before spraying.

[0034]The fol...

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Abstract

The invention relates to an epoxy anticorrosive paint added with carbon nanotubes and flaky zinc powder and a preparation method thereof. The paint comprises a component A and a component B, the weight ratio of the component A to the component B is 1: (0.12-0.4), and the component A comprises the following components in percentage by weight: 6-40% of epoxy resin, 20-50% of solvent, 1-5% of anti-settling agent and 10-40% of flaky zinc powder, and 0.03-3% of a carbon nanotube; and the component B comprises the following components in percentage by weight: 3-9% of curing agent and 8-20% of solvent. Compared with the prior art, the method has the advantages of convenience in construction, high curing speed, excellent adhesive force, excellent corrosion resistance, favorable mechanical properties, favorable storage stability and the like; the method can be widely applied to industries such as transportation, ships, bridges, war industry and marine equipment.

Description

Technical field[0001]The invention relates to an anticorrosive paint, in particular to an epoxy anticorrosive paint added with carbon nanotubes and scaly zinc powder.Background technique[0002]Corrosion can cause huge losses. The protection of metal corrosion is mainly achieved by anti-corrosion coatings. Zinc-rich coatings are currently one of the commonly used primers in China's heavy anti-corrosion coating systems. Epoxy zinc-rich primers have good mechanical properties, Cathodic protection performance can effectively prevent corrosion of steel structures. Its anti-corrosion effect is achieved by sacrificing zinc powder. Its anti-corrosion mechanism can be summarized as: electrochemical protection and zinc deposit shielding protection, zinc powder and steel surface In close contact, zinc has a lower potential than iron and forms a galvanic cell with a steel substrate. Zinc is the anode (usually called sacrificial anode) and iron is the cathode. The current flows from zinc to iron,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61
CPCC08K2003/0893C09D5/106C09D163/00C09D7/61C08K7/00C08K3/08C08K3/041C08K3/346
Inventor 朱晓林魏小昕丛伟张焱焱
Owner 朱晓林