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Desulfurization chimney anticorrosive paint and preparation method thereof

A technology for anti-corrosion coatings and chimneys, applied in anti-corrosion coatings, coatings, etc., to achieve the effects of corrosion resistance to flue gas condensate, excellent stress and strain resistance, and good anti-corrosion performance

Inactive Publication Date: 2012-11-14
XIAN THERMAL POWER RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, conventional heavy-duty anti-corrosion coatings are not necessarily suitable for chimney anti-corrosion after desulfurization

Method used

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  • Desulfurization chimney anticorrosive paint and preparation method thereof
  • Desulfurization chimney anticorrosive paint and preparation method thereof
  • Desulfurization chimney anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Preparation of component A:

[0043] First, crush vinylidene fluoride copolymer, the raw material of fluoroelastomer, to a particle size of less than 1 cm, then mix, stir and dissolve it with solvent acetone at a mass ratio of 1:0.5 for 72 hours to obtain a fluoroelastomer solution, and then press it into the fluoroelastomer solution Fluoroelastomer raw material: filler (glass flakes with a size of 120 mesh to 400 mesh) at a mass ratio of 1:0.1. After adding filler, disperse, grind and refine for 10 hours, and finally press fluoroelastomer raw material: additive magnesium oxide at a ratio of 1:0.005 The mass ratio is made into component A by adding additives, dispersing and grinding for 4 hours;

[0044] 2) Preparation of component B:

[0045] Mix the curing agent and the solvent acetone at a ratio of 1:1, dissolve and disperse for 1 hour to obtain component B;

[0046] 3) Stir and mix component A and component B at a mass ratio of 1:0.001 for 10 minutes to obtain ...

Embodiment 2

[0051] 1) Preparation of component A:

[0052] First, pulverize the tetrafluoroethylene copolymer as the raw material of the fluoroelastomer to a particle size below 1 cm, then mix and stir it with the solvent cyclohexanone at a mass ratio of 1:2 and dissolve for 40 hours to obtain a fluoroelastomer solution, and then add the fluoroelastomer solution to the fluoroelastomer solution According to the mass ratio of fluoroelastomer raw material: filler (hollow glass microspheres with a size of 120 mesh to 400 mesh) at a mass ratio of 1:0.3, add the filler, disperse and grind for 20 hours, and finally press fluoroelastomer raw material: additive phthalate The mass ratio is 1:0.01, adding auxiliary agents, dispersing, grinding and refining for 6 hours to make component A;

[0053] 2) Preparation of component B:

[0054] The curing agent phenethylamine and the solvent cyclohexanone were mixed, dissolved and dispersed for 8 hours at a ratio of 1:1 to obtain component B;

[0055] 3) ...

Embodiment 3

[0060] 1) Preparation of component A:

[0061] Firstly, the fluoroelastomer raw material perfluorovinyl ether copolymer is pulverized to a particle size of less than 1 cm, then mixed with ethyl acetate as a solvent in a mass ratio of 1:5, stirred and dissolved for 1 hour to obtain a fluoroelastomer solution, and then to the fluoroelastomer In the body solution, the mass ratio of fluoroelastomer raw material: filler (titanium dioxide of type R902) is 1:0.5. After adding the filler, it is dispersed and ground for 36 hours, and finally the raw material of fluoroelastomer: auxiliary agent polyacrylate is 1: The mass ratio of 0.015 is added into the auxiliary agent to disperse and grind for 10 hours to make component A;

[0062] 2) Preparation of component B:

[0063] Mix, dissolve and disperse the curing agent octadecyltrimethylammonium chloride and the solvent ethyl acetate at a ratio of 1:1 for 5 hours to obtain component B;

[0064] 3) Stir and mix component A and component B a...

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Abstract

The invention provides a desulfurization chimney anticorrosive paint and a preparation method of the desulfurization chimney anticorrosive paint. The desulfurization chimney anticorrosive paint comprises a first component formed by dissolving, dispersing and mixing fluoroelastomer, a solvent, padding and an assistant according to certain proportion and a second component formed by mixing a solidification agent and the solvent according to certain proportion. The first component and the second component are stirred and mixed according to certain proportion for 10min-30min to conduct painting construction. The desulfurization chimney anticorrosive paint has the advantages of excellent elasticity, adhesive force, strong acid strong base corrosion resistance, thermostability aging performance, high / low temperature change resistance and wear-resisting property, and can meet desulfurization chimney anticorrosive requirements under various operation conditions on the premise of guaranteeing construction quality.

Description

technical field [0001] The invention relates to an anti-corrosion coating and a preparation method thereof, in particular to a desulfurization chimney anti-corrosion coating and a preparation method thereof. Background technique [0002] As the country strengthens the supervision and control of air pollutants, the emission of sulfide in the power industry has been strictly limited, and flue gas desulfurization has become a consensus. At present, after domestic power plants generally adopt wet desulfurization technology, severe corrosion occurs especially in desulfurization chimneys without GGH. In order to prevent corrosion, coating anticorrosion is the best choice in terms of economy and feasibility. At present, most of the desulfurization chimneys that use acid-resistant cement, VEGF scale cement, polyurea coating and polyurethane coating for anti-corrosion have various failure cases. This is mainly because the special working conditions of power plant chimney operation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/16C09D127/18C09D129/10C09D5/08
Inventor 邓宇强曹杰玉李海洋祁东东林卫丽张祥金倪瑞涛宋飞
Owner XIAN THERMAL POWER RES INST CO LTD
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