Anticorrosion primer paint for chimney of electric plant and its uses

An anti-corrosion primer and technology for chimneys, applied in anti-corrosion coatings, polyester coatings, coatings, etc., can solve the problems of poor anti-corrosion, chemical corrosion resistance and heat resistance of power plant chimneys, and achieve low cost and improve dust removal Non-toxicity and the effect of less organic solvent

Inactive Publication Date: 2007-08-01
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Now on the market, there are many types of primers, such as primers generally used for furniture primers, primers for long-term antirust of steel structures, etc. Although the production method of this type of primers is simple, the disadvantage of this type of primer is chemical resistance. Poor corrosion performance and heat resistance, so it cannot be directly used for anti-corrosion of power plant chimneys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 40kg of 199 isophthalic unsaturated resin, 0.3kg of cobalt naphthenate, 59kg of aluminum silicate, and 0.7kg of fumed silica (QS-10 from Tokuyama Co., Ltd., Japan) were uniformly mixed to obtain an unsaturated polyester base material.

[0026] Stir 50kg of methyl ethyl ketone peroxide and 50kg of dibutyl phthalate evenly to obtain a curing agent.

[0027] The above-mentioned unsaturated polyester base material and curing agent are uniformly mixed at a ratio of 100:2 (weight ratio), and the anticorrosion primer for power plant chimneys of the present invention is obtained.

[0028] When in use, the anticorrosion primer used for power plant chimneys can be applied to cracks in chimneys with tools such as brushes or shovels.

Embodiment 2

[0030] Mix 70kg of 3301 bisphenol A type unsaturated resin, 1.0kg of cobalt naphthenate, 28kg of aluminum silicate, and 1.0kg of fumed silica (AEROSIL 200 from Degussa Corporation) to obtain an unsaturated polyester base material.

[0031] Stir 30kg of methyl ethyl ketone peroxide and 70kg of dibutyl phthalate evenly to obtain a curing agent.

[0032] The above-mentioned unsaturated polyester base material and curing agent are uniformly mixed in a proportion of 100:0.5 (weight ratio), to obtain the anticorrosion primer for power plant chimneys of the present invention.

[0033] When in use, the anticorrosion primer used for power plant chimneys can be applied to cracks in chimneys with tools such as brushes or shovels.

Embodiment 3

[0035] Mix 20kg 898 vinyl type unsaturated resin, 0.1kg cobalt naphthenate, 79.7kg aluminum silicate, and 0.2kg fumed silica (AEROSIL 300 of Degussa Company) to obtain unsaturated polyester base material .

[0036] Stir 70kg of methyl ethyl ketone peroxide and 30kg of dibutyl phthalate evenly to obtain a curing agent.

[0037] The above-mentioned unsaturated polyester base material and curing agent are uniformly mixed at a ratio of 100:3 (weight ratio), to obtain the anticorrosion primer for power plant chimneys of the present invention.

[0038] When in use, the anticorrosion primer used for power plant chimneys can be applied to cracks in chimneys with tools such as brushes or shovels.

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Abstract

The invention relates to anticorrosion priming paint for power plant chimney, comprising unstaurated polyester base material and curing agent, and the proportion by weight between them is 100: 0.3-3. Said unstaurated polyester base material comprises: chemical-resisting unstaurated resin 20-70 (proportion by weight), cobaltic naphthenate 0.1- 1.0 (proportion by weight), alumina silicate 79.7- 28 (proportion by weight), and gas phase silica dioxide 0.2- 10 (proportion by weight). Said curing agent comprises: methyl-ethyl ketone peroxide 30- 70 (proportion by weight) and butyl benzene o-dicarboxylate 70- 30 (proportion by weight). The anticorrosion priming paint is characterized by fast curing, easy- polishing, little organic solvent discharging, strong adhesion force, simple process, convenient utilization and good corrosion resistance performance.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to an anti-corrosion primer for power plant chimneys and its application in protecting the inner wall of the chimney. Background technique [0002] With the improvement of the country's emission standards for smoke and dust, the chimney dust removal needs to be treated by wet process. In addition to generating SO when coal is burned 2 In addition, a small amount of SO 3 , NO x , HCl, HF and other gases, due to the high humidity of the flue gas, it can instantly form H on the inner wall of the chimney. 2 SO 4 , HCl, HF and other strong corrosive acid solutions, which will cause serious corrosion to the chimney and shorten the service life of the chimney. [0003] Due to the characteristics of the material itself, concrete is prone to produce pores, cracks, salt frost, etc. on its surface, which intensifies the erosion of acidic liquids and causes leakage, which greatly sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D5/08
Inventor 任天瑞何金太张万悟
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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