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Polyaniline epoxy anti-corrosive paint and preparation method thereof

A polyaniline epoxy and anti-corrosion coating technology, applied in the coating field, can solve the problems affecting the appearance and anti-corrosion performance of the coating, the solvent volatilization speed is not easy to control, the coating leveling is poor, etc. time, easy to disperse effect

Active Publication Date: 2011-06-22
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent No. CN 1358812 discloses a preparation process of polyaniline anti-corrosion coating, mixing epoxy resin with polyaniline and diluent, and mixing with phenolic resin after grinding The amine, polyamide, and thinner are mixed evenly. The disadvantage is: using a single-component solvent, the solvent volatilization rate is not easy to control, resulting in poor leveling of the coating, affecting the appearance and anti-corrosion performance of the coating.
The patent with the notification number CN 101407650 discloses a UV-curable polyaniline anticorrosion coating and its preparation method, and the patent with the notification number CN 101418146 discloses a UV-thermal dual-curing polyaniline anticorrosion coating and its preparation method. Its common disadvantage is that the filler used is polyaniline powder, which has a large amount of filler and is easy to agglomerate

Method used

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  • Polyaniline epoxy anti-corrosive paint and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Polyaniline epoxy anticorrosion coating is prepared according to the following steps:

[0021] 1. Preparation of mixed solvent: Mix 42.5 g of xylene and 57.5 g of n-butanol, and stir evenly to obtain a mixed solvent.

[0022] 2. Preparation of component A: Add 37.5 g of intrinsic polyaniline / attapulgite nanocomposite filter cake with a solid content of 30% to 100 g of mixed solvent, heat while stirring, and distill the The moisture is removed, and the polyaniline / attapulgite composite material organic dispersion that obtains solid content is 20%; To 50g solid content, add 50g epoxy resin ( E-44), stir until the epoxy resin is fully dissolved to obtain component A.

[0023] 3. Preparation of component B: Add 45 g of polyamide (molecular weight 650) to 55 g of absolute ethanol, mix and stir until the polyamide is fully dissolved to obtain component B.

[0024] 4. Part A and Part B can be divided into packages first. When using, mix 100g of Part A and 100g of Part B and ...

Embodiment 2

[0026] Polyaniline epoxy anticorrosion coating is prepared according to the following steps:

[0027] 1. Preparation of mixed solvent: Mix 25 g of toluene and 75 g of isobutanol, and stir evenly to obtain a mixed solvent.

[0028] 2. Preparation of component A: Add 25 g of intrinsic polyaniline / attapulgite nanocomposite filter cake with a solid content of 20% to 100 g of mixed solvent, heat while stirring, and distill the Moisture is removed, and the polyaniline / attapulgite composite material organic dispersion that obtains solid content is 12.5%; To 60g solid content, add 40g epoxy resin (E -44), stirring until the epoxy resin is fully dissolved to obtain component A.

[0029] 3. Preparation of component B: Add 30 g of polyamide (molecular weight: 650) to 70 g of absolute ethanol, mix and stir until the polyamide is fully dissolved to obtain component B.

[0030] 4. Part A and Part B can be divided into packages first. When using, mix 50g of Part A and 60g of Part B and sti...

Embodiment 3

[0032] Polyaniline epoxy anticorrosion coating is prepared according to the following steps:

[0033] 1. Preparation of mixed solvent: Mix 60 g of xylene and 40 g of tert-butanol, and stir evenly to obtain a mixed solvent.

[0034] 2. Preparation of component A: Add 50 g of doped polyaniline / attapulgite nanocomposite filter cake with a solid content of 40% to 100 g of mixed solvent (the dopant is phosphoric acid), heat while stirring, and pass The method of distillation removes the moisture in the system, obtains the polyaniline / attapulgite composite material organic dispersion that solid content is 25%; Add 60g of epoxy resin (E-44) and stir until the epoxy resin is fully dissolved to obtain component A.

[0035] 3. Preparation of component B: Add 60 g of polyamide (molecular weight: 650) to 40 g of absolute ethanol, mix and stir until the polyamide is fully dissolved to obtain component B.

[0036] 4. Part A and Part B can be divided into packages first. When using, mix 10...

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Abstract

The invention discloses a polyaniline epoxy anti-corrosive paint and a preparation method thereof. The polyaniline epoxy anti-corrosive paint comprises a component A and a component B, wherein the component A comprises the following ingredients in percentage by mass: 40-60% of epoxy resin, 35-45% of mixed solvent and 5-15% of polyaniline / attapulgite nano composite material; and the component B comprises the following ingredients in percentage by mass: 30-60% of amine curing agent and 40-70% of anhydrous alcohol. The preparation method comprises the following steps: mixing phenylmethane or xylene with n-butyl alcohol, isobutanol or tert-butyl alcohol to obtain a mixed solvent, and mixing the component A and the component B in the weight ratio of 1:(0.5-1.2) for 0.5-1 hour. The mechanical properties, ageing resistance and corrosion resistance of the whole paint system are obviously enhanced, so that the metal surface is passivated to form a compact and stable oxide film, thereby preventing the metal from being further oxidized.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a polyaniline epoxy anticorrosion coating and a preparation method thereof. Background technique [0002] Metal corrosion is the phenomenon that the metal surface is destroyed by the chemical or electrochemical action of the environmental medium. The most effective and common method of anti-corrosion is to coat the metal surface with an anti-corrosion coating to isolate the substrate from the corrosive medium. The anti-corrosion performance of the coating is mainly reflected in the corrosion resistance of the coating to the corrosive medium and the penetration resistance of the medium. Therefore, to improve the anti-corrosion performance of the coating, one is to choose a corrosion-resistant resin, and the other is to use an anti-corrosion filler with excellent performance. Epoxy resin coatings have the advantages of high adhesion, excellent chemical and solvent resistance, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D179/02C09D7/12C09D5/08
Inventor 姚超王磊磊汪信李锦春钱大庆张辉耀郝青丽朱俊武
Owner 溧阳常大技术转移中心有限公司
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