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Phosphate doped polyaniline anticorrosive paint and preparation method thereof

A technology of anti-corrosion coatings and phosphate esters, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of high boiling point, toxicity, etc., achieve low preparation costs, solve easy foaming, and reduce use costs.

Active Publication Date: 2014-04-16
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has been found that some special strong polar solvents, such as N-methylpyrrolidone and m-cresol, can dissolve polyaniline, these solvents generally have high boiling points and are toxic, so it is difficult to use them in anti-corrosion coatings. get applied

Method used

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  • Phosphate doped polyaniline anticorrosive paint and preparation method thereof
  • Phosphate doped polyaniline anticorrosive paint and preparation method thereof
  • Phosphate doped polyaniline anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: take by weighing 150 grams of epoxy resin E51, 200 grams of dimethylbenzene respectively and put into sand mill tank, under stirring, put into the phosphate-doped polyaniline powder 10 that is prepared by the phosphoric acid ester that structural formula is (1) grams, stirred for 2 hours, under stirring, then added 15 grams of dispersant BYK163, 150 grams of aluminum dihydrogen tripolyphosphate, 150 grams of zinc phosphate, 70 grams of micaceous iron oxide, 60 grams of talcum powder, 50 grams of zinc oxide, precipitated sulfuric acid 40 grams of barium, 5 grams of leveling agent BYK371, stirred for 1 hour at a speed of 2500 rpm, sanded for 2 hours, and filtered with a 200-mesh filter cloth to obtain component A.

[0043] Component B is: 100 grams of curing agent NX-2040;

[0044] Component A and component B were stirred in a high-speed mixer at 1200 rpm for 5 minutes to obtain a phosphate-doped polyaniline anticorrosion coating.

[0045] Spray it on the s...

Embodiment 2

[0046] Embodiment 2: take by weighing 120 grams of epoxy resin E44, 220 grams of dimethylbenzene respectively and put into sand mill tank, under stirring, put into the phosphoric acid ester doped polyaniline that is prepared by the phosphoric acid ester of (3) by phosphoric acid ester structural formula 20 grams of powder, stirred for 1 hour, then added 10 grams of dispersant BYK163, 200 grams of aluminum dihydrogen tripolyphosphate, 200 grams of zinc phosphate, 100 grams of mica iron oxide, 30 grams of talcum powder, 20 grams of zinc oxide under stirring, and precipitated 10 grams of barium sulfate, 10 grams of leveling agent BYK371, stirred at a speed of 2500 rpm for 0.5 hours, sanded for 3 hours, and filtered with a 200-mesh filter cloth to obtain component A.

[0047] Component B is: 60 grams of curing agent NX-2041;

[0048] Component A and component B were stirred in a high-speed mixer at 1500 rpm for 3 minutes to obtain a phosphate-doped polyaniline anticorrosion coatin...

Embodiment 3

[0050]Embodiment 3: take by weighing 200 grams of epoxy resin E44, xylene 240 grams respectively and put into the sand mill tank, under stirring, put into the phosphoric acid ester doped polyaniline that is prepared by the phosphoric acid ester of (2) by phosphoric acid ester structural formula 30 grams of powder, stirred for 0.5 hours, then added 5 grams of dispersant BYK163, 130 grams of aluminum dihydrogen tripolyphosphate, 130 grams of zinc phosphate, 60 grams of mica iron oxide, 20 grams of talcum powder, 20 grams of zinc oxide under stirring, and precipitated 10 grams of barium sulfate, 5 grams of leveling agent BYK371, stirred at a speed of 2500 rpm for 3 hours, sanded for 1 hour, and filtered with a 200-mesh filter cloth to obtain component A.

[0051] Component B is: 150 grams of curing agent ZY-650;

[0052] Component A and component B were stirred in a high-speed mixer at 1300 rpm for 4 minutes to obtain a phosphate-doped polyaniline anticorrosion coating.

[0053]...

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Abstract

The invention provides a phosphate doped polyaniline anticorrosive paint and a preparation method thereof. In the preparation method, polyaniline is well dispersed in an organic solvent on the basis of 'countra-ion induction workability' in the presence of special phosphate used as a doping agent of the polyaniline, so that a good anticorrosive effect can be obtained by adding little conductive polyaniline in the formula of the anticorrosive paint, thereby greatly reducing the cost of polyaniline anticorrosive paint. The anticorrosive paint has strong resistance to corrosion of media (salt mist, acid, alkali and the like) and atmosphere environment, and has good anticorrosive effect on different metals such as steel, copper, aluminum and the like, thereby widening the application range of the anticorrosive paint. The synthesis process is simple with low preparation cost. After a 1000-hour scratch-resistant experiment, the anticorrosive paint can reach the technical indexes of non-propagating rusting and no blister on a board surface, which is twice more than that of the traditional polyaniline anticorrosive paint, thereby solving the defects such as blistering, happening commonly when the traditional polyaniline anticorrosive paint is subjected to scratch-resistant experiment.

Description

technical field [0001] The invention relates to a phosphate-doped polyaniline anticorrosion coating and a preparation method thereof. Background technique [0002] The problem of metal corrosion pervades all sectors and industries of the national economy, causing great harm to the development of the national economy, people's lives and the social environment. In order to prevent corrosion, countries all over the world have invested a lot of manpower and financial resources, and adopted various methods for corrosion protection. [0003] Polyaniline is one of the high-tech new materials with special functions. A large number of test results have proved that polyaniline coatings have excellent anti-corrosion capabilities for metals. At present, the development of polyaniline anti-corrosion coatings has become a new hot spot in the field of coatings research. Existing polyaniline anti-corrosion coatings mainly include the following two types: (1) electrochemical polymerization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D179/02C09D5/08
Inventor 吕金龙孙杨刘年江张红明李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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