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Polyaniline epoxy anti-corrosive paint and preparation method thereof

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

Active Publication Date: 2012-12-26
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] The patent with the notification number CN 1358812 discloses a preparation process of polyaniline anti-corrosion coatings. The epoxy resin is mixed with polyaniline and diluent, and after grinding, it is evenly mixed with phenalkamine, polyamide and diluent. The defect is: One-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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Embodiment 2

[0016] Example 2 The polyaniline epoxy anti-corrosion coating was prepared according to the following steps: 1. Preparation of mixed solvent: 25g of toluene was mixed with 75g of isobutanol, and stirred evenly to obtain a mixed solvent.

[0017] 2. Preparation of component A: Add 25g of intrinsic polyaniline / attapulgite nanocomposite filter cake with a solid content of 20% to 100g of mixed solvent, heat while stirring, and distill the Moisture is removed, and obtaining solid content is the organic dispersion of polyaniline / attapulgite composite material of 12.5%; To 60g solid content, add 40g epoxy resin (E -44), stirring until the epoxy resin is fully dissolved to obtain the first component.

[0018] 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.

[0019] 4. Part A and Part B can be divided into packages first. When using, mix 50g of Part A an...

Embodiment 3

[0020] Example 3 The polyaniline epoxy anticorrosion coating was prepared according to the following steps: 1. Preparation of mixed solvent: 60g of xylene was mixed with 40g of tert-butanol, and stirred evenly to obtain a mixed solvent.

[0021] 2. Preparation of component A: Add 50 g of doped polyaniline / attapulgite nanocomposite filter cake (dopant is phosphoric acid) with a solid content of 40% in 100 g of mixed solvent, heat while stirring, and pass The method of distillation removes the moisture in the system, obtains the organic dispersion of polyaniline / attapulgite composite material 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.

[0022] 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.

[0023] 4. Part A and Part B can be divided into packages first. When u...

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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 Patents(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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