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Preparation method for epoxy anticorrosive coating

A technology of anti-corrosion coating and epoxy, which is applied in the preparation of epoxy anti-corrosion coating and the preparation field of epoxy anti-corrosion coating modified by soluble polyoxyethylene thiophene, which can solve the problem of weak anti-corrosion performance of materials and complex process , unfriendly environment and other issues, to achieve the effect of low cost, reasonable preparation route, high promotion and application value

Inactive Publication Date: 2012-07-11
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these disclosed technical solutions generally have disadvantages such as complex process, unfriendly environment, poor modification effect, weak anti-corrosion performance of prepared materials, and high cost.

Method used

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  • Preparation method for epoxy anticorrosive coating
  • Preparation method for epoxy anticorrosive coating
  • Preparation method for epoxy anticorrosive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 0.05mol dioxyethylenethiophene monomer and 0.02mol sodium dodecylbenzenesulfonate in 500mL distilled water, place in an ice-water bath and stir for 2 hours, dissolve 0.02mol ammonium persulfate in 200mL distilled water and place on ice Stir in a water bath for 0.5 hours, add the ammonium persulfate solution dropwise into the dioxyethylene thiophene monomer suspension, stir for 24 hours, add acetone and filter, wash the product repeatedly with acetone and distilled water, and dry it in vacuum at 60°C After 24 hours, polyoxyethylene thiophene solid powder was obtained; then 10 g of epoxy resin, 10 g of polyamide, and 0.06 g of polyoxyethylene thiophene solid powder were placed in a container, stirred and ultrasonicated for 1 hour, and then sprayed or brushed on On the steel plate, put the steel plate in an environment of 20°C and cure for about 15 hours to obtain a coating material; as a comparison, prepare, coat and cure 10g of epoxy resin and 10g of polyamide in...

Embodiment 2

[0024] Dissolve 0.075mol dioxyethylenethiophene monomer and 0.03mol cetyltrimethylammonium bromide in 500mL distilled water, place in an ice-water bath and stir for 2 hours, dissolve 0.06mol ferric chloride in 200mL distilled water Place in an ice-water bath and stir for 0.5 hours, add the ferric chloride solution dropwise into the dioxyethylene thiophene monomer suspension, stir for 24 hours, add acetone and filter, and the obtained product is washed repeatedly with acetone and distilled water, and placed in Vacuum dry at 60°C for 24 hours to obtain polyoxyethylene thiophene solid powder; then put 10g of epoxy resin, 15g of ethylenediamine, and 0.015g of polyoxyethylene thiophene solid powder in a container, stir and sonicate for 0.5h, Then it is scraped and coated on the steel plate; the steel plate is placed in the environment of 20 ℃ and cured for about 20 hours to obtain the coating material; as a comparison, 10g of epoxy resin and 15g of trimethylhexamethylenediamine are ...

Embodiment 3

[0026]Dissolve 0.02mol dioxyethylene thiophene monomer and 0.01mol sodium lauryl sulfate in 500mL distilled water, place in an ice-water bath and stir for 2 hours, dissolve 0.01mol potassium permanganate in 200mL distilled water and place in an ice-water bath Stir in the middle for 0.5 hours, add the potassium permanganate solution dropwise into the dioxyethylene thiophene monomer suspension, stir for 24 hours, add acetone and filter, and the obtained product is washed repeatedly with acetone and distilled water, and vacuum-dried at 60°C After 24 hours, polyoxyethylene thiophene solid powder was obtained; then 10 g of epoxy resin, 15 g of trimethylhexamethylenediamine, and 0.045 g of polyoxyethylene thiophene solid powder were placed in a container, stirred and ultrasonically 0.5 h, and then spray, scrape or brush on the steel plate; put the steel plate in an environment of 25 ° C for about 15 hours to obtain the coating material; Figure 5 The scanning electron microscope pho...

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Abstract

The invention relates to a preparation method for an epoxy anticorrosive coating, which belongs to the technical field of preparation of anticorrosive coating materials. The method comprises the following steps: dissolving an emulsifier in water, adding ethylenedioxythiophene monomers into an obtained aqueous solution, cooling the aqueous solution in ice-water bath and carrying out stirring so as to obtain emulsion A; dissolving an oxidizing agent in water, cooling an obtained aqueous solution in ice-water bath and carrying out stirring so as to obtain solution B; slowly mixing the solution B and the emulsion A according to a volume ratio of 1:1, carrying out stirring and allowing the solution B to react with the emulsion A in ice-water bath so as to obtain suspending liquid C; adding acetone into the suspending liquid C for demulsification, carrying out filtering, carrying out repeated rinsing with acetone or water so as to obtain polyethylenedioxythiophene and drying polyethylenedioxythiophene at a temperature of 60 DEG C in vacuum so as to obtain solid powder D; and stirring epoxy resin, a curing agent, a diluent and the solid powder D in a container, carrying out ultrasonic treatment for 20 min to 1 h, coating an obtained mixture on a steel plate and curing the steel plate at room temperature so as to obtain the epoxy anticorrosive coating. According to the invention, process route is reasonable, technology is mature, and the prepared anticorrosive coating has the advantages of low cost, excellent performance and good economic effects.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of anticorrosion coating materials, and relates to a preparation method of an epoxy anticorrosion coating, in particular to a preparation method of modifying an epoxy anticorrosion coating with soluble polyethylene oxide thiophene. Background technique: [0002] In 1985, DeBerry discovered that the polyaniline film synthesized by electrochemical method in acidic medium could passivate the surface of stainless steel and prevent corrosion, which opened the prelude to the research of conductive polymers in the field of corrosion protection. Conductive polymers not only have a physical isolation effect on corrosive media, but also can activate and passivate the metal surface, thereby changing the corrosion potential of the metal to achieve anti-corrosion effects. Among many conductive polymer materials, polyaniline, polypyrrole, polythiophene and their derivatives are the main research objects in...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D165/00C09D7/12C09D5/08C08G61/12B05D1/00B05D1/02B05D1/28B05D3/04
Inventor 侯健王均涛郭为民朱光徐景坤
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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