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Preparation method of epoxy/polyaniline composite base-material for anticorrosion paint

An anti-corrosion coating, polyaniline technology, applied in anti-corrosion coatings and other directions, can solve the problems of high price, complex process, environmental pollution, etc., and achieve the effects of low cost, simple process and environmental friendliness

Inactive Publication Date: 2006-02-15
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the preparation of epoxy / polyaniline composite base material for anti-corrosion coatings usually has the following methods: 1. first polymerize polyaniline on the surface of inorganic fillers, and then mix such fillers with epoxy resin, such as patent CN1401718A; 2. First prepare the polyaniline dispersion, and then blend it with epoxy resin film-forming materials, such as patent CN1215744A; 3. The method described in patent CN1429258A is: first dissolve polyaniline in a specific curing agent solution, and then mix it with epoxy resin ; 4. Blend polyaniline powder with film-forming materials such as epoxy resin, such as patents: CN1243852A, CN1385486A, CN1358812A, CN1441039A. The biggest drawback of this type of preparation process is that the prepared polyaniline material is used. Not only is the price expensive, but there are many problems in the preparation process, such as complex process, high cost, environmental pollution, etc.

Method used

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  • Preparation method of epoxy/polyaniline composite base-material for anticorrosion paint
  • Preparation method of epoxy/polyaniline composite base-material for anticorrosion paint

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] Weigh 10g of epoxy resin into a 50ml beaker, heat to 50-60°C, stir evenly, cool to 15-25°C, add 2g of aniline monomer, adjust the pH of the system to 1 with hydrochloric acid, add 2g of persulfuric acid dropwise 12ml of ammonium solution, reacted for 2.5h, allowed to stand for stratification, and poured out the water layer to obtain the epoxy / polyaniline composite base material. Then add 3.5g of low-molecular polyamide curing agent to the composite base material, stir evenly, and then coat the film on the treated steel plate. First, put the coated film at room temperature to air for a period of time, and then put it into the oven. In drying at 60°C for a period of time, an epoxy resin / polyaniline composite film can be obtained.

Embodiment 2～3

[0031] Change the consumption of aniline monomer, the consumption of embodiment 2 aniline monomer is 1g, the consumption of embodiment 3 aniline monomer is 1.5g, other conditions are the same as embodiment 1. The test results of the corrosion potential of the composite film are shown in Table 2:

[0032] Example 2 Example 3

Embodiment 4～5

[0034] Change the consumption of oxidant, the consumption of embodiment 4 oxidant is 1.8g, the consumption of embodiment 5 oxidant is 2.5g, and other conditions are identical with embodiment 1. The measurement results of the corrosion potential of the composite film are shown in Table 3:

[0035] Example 4 Example 5

[0036] Example 1 2 3 4 5 Comparative example

[0037] As can be seen from Table 4, the preparation method of the epoxy / polyaniline composite base material for anti-corrosion coatings described in the present invention is not only simple in process, low in cost, and environmentally friendly, but also compared with commercial polyaniline currently on the market, the The anti-corrosion performance has been significantly improved.

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Abstract

The preparation method for epoxide / polyaniline composite basic material in anti corrosive paint comprises, using epoxy resin as dispersant to disperse aniline or its derivative monomer; taking polymerization and doping technique at room temperature to prepare the material. This method is simple and low cost fit to industrial production. The product also has well film-forming and leveling properties and fit to anti electromagnetism or EL material.

Description

technical field [0001] The invention relates to a preparation method of epoxy / polyaniline composite base material for anticorrosion paint. Background technique [0002] At present, a large number of researches on the synthesis and application of polyaniline are being carried out worldwide. As a conductive polymer material, polyaniline is considered to be the most promising polymer for practical applications because of its easy-to-obtain raw materials, good electrical conductivity, and stability in the environment. However, it is difficult to dissolve. According to reports, it can only be dissolved in a few strong polar solvents such as formic acid, dimethylformamide, dimethyl sulfoxide, etc.; it cannot be melted and decomposed at about 200 ° C; The blending property of the compound is very poor, and the above factors limit its processing and application. Therefore, the modification of polyaniline and the synthesis of its functional complexes have become a hot field. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L79/02C09D5/08
Inventor 马利甘孟瑜杨橘郑星
Owner CHONGQING UNIV
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