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Nano-composite electric conduction anticorrosive paint and preparation method thereof

A conductive anti-corrosion and nano-composite technology, applied in anti-corrosion coatings, conductive coatings, epoxy resin coatings, etc., can solve problems such as low solubility, and achieve the effects of simple process equipment, high corrosion resistance, and low cost

Inactive Publication Date: 2014-03-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A nano-composite conductive anti-corrosion coating and its preparation method. First, the organic acid dodecylbenzenesulfonic acid (DBSA) is used as a dopant to overcome the low solubility of doped polyaniline (PANI), and carbon nanotubes are used to improve The electrical conductivity of the composite powder, and then PANI-DBSA / CNT is compounded with epoxy resin to prepare a nanocomposite coating with both electrical conductivity and anti-corrosion functions. The specific preparation steps are as follows:

Method used

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  • Nano-composite electric conduction anticorrosive paint and preparation method thereof
  • Nano-composite electric conduction anticorrosive paint and preparation method thereof
  • Nano-composite electric conduction anticorrosive paint and preparation method thereof

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Experimental program
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Effect test

Embodiment approach 1

[0038] Step 1: Carbon nanotube (CNT) modification

[0039] Using 98% concentrated sulfuric acid and 65% concentrated nitric acid, press Prepare aqua regia in proportion to; then press m CNT : V Aqua regia Weigh (quantity) the ratio of =1mg:50mL to take multi-walled carbon nanotubes (CNT) and aqua regia. Disperse the weighed multi-walled carbon nanotubes in aqua regia, and ultrasonically treat them in a water bath for 2 hours, then wash the acidified multi-walled carbon nanotube mixed solution with distilled water to neutrality, and heat the resulting black solid at 50°C Vacuum drying for 24 hours to obtain surface-modified carbon nanotubes.

[0040] Step 2: Preparation of PANI-DBSA / CNT composite material

[0041] Press m CNT : M aniline : M Ammonium persulfate =1mg:28g:70g and weigh the surface-modified carbon nanotubes, aniline and ammonium persulfate. The weighed modified carbon nanotubes and aniline were dissolved in 100 ml of 1.0 mol / L phosphoric acid, and the weighed ammon...

Embodiment approach 2

[0047] Step 1: Carbon nanotube (CNT) modification

[0048] Using 98% concentrated sulfuric acid and 65% concentrated nitric acid, press Prepare aqua regia in proportion to; then press m CNT : V Aqua regia =10mg:55mL to weigh (quantify) multi-walled carbon nanotubes (CNT) and aqua regia. Disperse the weighed multi-walled carbon nanotubes in aqua regia, and ultrasonically treat them in a water bath for 2 hours, then wash the acidified multi-walled carbon nanotube mixed solution with distilled water to neutrality, and heat the resulting black solid at 50°C Vacuum drying for 24 hours to obtain surface-modified carbon nanotubes.

[0049] Step 2: Preparation of PANI-DBSA / CNT composite material

[0050] Press m CNT : M aniline : M Ammonium persulfate =10mg: 25g: 60g to weigh the surface modified carbon nanotubes, aniline and ammonium persulfate. The weighed modified carbon nanotubes and aniline were dissolved in 100 ml of 1.0 mol / L phosphoric acid, and the weighed ammonium persulfate ...

Embodiment approach 3

[0056] Step 1: Carbon nanotube (CNT) modification

[0057] Using 98% concentrated sulfuric acid and 65% concentrated nitric acid, press Prepare aqua regia in proportion to; then press m CNT : V Aqua regia =20mg:55mL Weigh (quantity) take multi-walled carbon nanotubes (CNT) and aqua regia. Disperse the weighed multi-walled carbon nanotubes in aqua regia, and ultrasonically treat them in a water bath for 2 hours, then wash the acidified multi-walled carbon nanotube mixed solution with distilled water to neutrality, and heat the resulting black solid at 50°C Vacuum drying for 24 hours to obtain surface-modified carbon nanotubes.

[0058] Step 2: Preparation of PANI-DBSA / CNT composite material

[0059] Press m CNT : M aniline : M Ammonium persulfate =30mg: 15g: 30g ratio to weigh the surface modified carbon nanotubes, aniline and ammonium persulfate. The weighed modified carbon nanotubes and aniline were dissolved in 100 ml of 1.0 mol / L phosphoric acid, and the weighed ammonium per...

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Abstract

The invention discloses nano-composite electric conduction anticorrosive paint and a preparation method thereof. The preparation method is characterized in that firstly organic acid dodecylbenzene sulfonic acid is used as a doping agent so as to overcome the low solubility of doped polyaniline, a carbon nanotube is used for improving the electric conductivity of composite powder, and then the carbon nanotube is compounded with a precursor of organic acid dodecylbenzene sulfonic acid doped polyaniline and epoxy resin so as to prepare the nano-composite electric conduction anticorrosive paint. According to the technical scheme, the polyaniline / carbon nanotube and the epoxy resin are compounded, so that the excellent characteristics of the polyaniline / carbon nanotube and the epoxy resin are organically combined together. The nano-composite electric conduction anticorrosive paint has relatively high electric conduction performance and very high anticorrosive performance and is relatively low in cost; required processing equipment is simple; the industrialization of the nano-composite electric conduction anticorrosive paint is easy to realize.

Description

Technical field [0001] The invention relates to a conductive anticorrosive coating for metal components and a preparation method thereof, and more specifically, to a nano composite conductive anticorrosive coating and a preparation method thereof. Background technique [0002] Metal materials are important engineering materials, and they play a broad role in the construction of the national economy. However, metal materials are prone to corrosion in a watery or humid environment, which not only damages the metal material itself but also destroys the overall structure of the metal. Metal equipment and materials scrapped each year due to corrosion are equivalent to 1 / 3 of metal output. In the industrial production of petroleum, chemical industry, pesticides, etc., accidents such as dripping, leakage, and leakage caused by corrosion not only cause economic losses, but also leak toxic substances, causing environmental pollution and endangering human life. Therefore, the problem of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D179/02C09D7/12C09D5/08C09D5/24C09C1/44C09C3/06C09C3/04C08G73/02
CPCC08G73/0266C09C1/44C09C3/06C09C3/10C09D5/08C09D5/24C09D7/62C09D163/00C08L79/02C08K9/04C08K9/02C08K7/24C08K5/42
Inventor 岳鑫王慧慧王吉会
Owner TIANJIN UNIV
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