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Excellent corrosion-proof performance organic-inorganic hybridized coatings and its prepn. method

A technology of coating material and corrosion resistance, applied in coatings, epoxy resin coatings, devices for coating liquids on surfaces, etc., can solve problems such as phase separation, achieve easy operation, inhibit corrosion, and excellent film-forming properties Effect

Inactive Publication Date: 2006-09-13
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN1517401A reports a method for preparing a water-based epoxy resin organic-inorganic hybrid material. The organic-inorganic hybrid coating is prepared by blending silica sol and graft-modified epoxy resin, which can be used for metal surface protection. The adhesion is good, but the organic-inorganic hybrid coating material obtained by the blending method is prone to phase separation

Method used

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  • Excellent corrosion-proof performance organic-inorganic hybridized coatings and its prepn. method
  • Excellent corrosion-proof performance organic-inorganic hybridized coatings and its prepn. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Organic-inorganic hybrid coating material formula 1

[0053] Composition Amount (g)

[0054] EDTA 3

[0055] Citric acid 3

[0056] 3-Glycidyl ether methoxytrimethoxysilane 15

[0057] Propyltrimethoxysilane 30

[0058] Cyclohexylepoxydimethoxysilane 5

[0059] Ethanol 17

[0060] water 25

[0061] Waterborne Acrylic 2

[0062] In a reactor equipped with a stirrer, a thermometer, a condenser, and a dropping funnel, add 15 grams of 3-glycidyl ether methoxytrimethoxysilane, 30 grams of propyltrimethoxysilane, 5 grams of cyclohexyl cyclohexyl Oxydimethoxysilane, 10 grams of ethanol, 3 grams of ethylenediaminetetraacetic acid, 3 grams of citric acid, controlled temperature 50-60 ° C, 800rpm stirring for 10 minutes, mixed 10 grams of ethanol, 25 grams of water and placed In the dropping funnel, at 200-400rpm, add dropwise at 50-60°C in 1-2 hours, continue stirring at 70-80°C for 10 hours, add 2 grams of water-based acrylic resin, stir at 1000rpm for 10 mi...

Embodiment 2

[0064] Organic-inorganic hybrid coating material formula 2

[0065] Composition Amount (g)

[0066] Oxalic acid 4

[0067] Phytic acid 6

[0068] Epoxytriethoxysilane 5

[0069] Silylmethoxy terminated polydimethylsiloxane 20

[0070] γ-Aminopropyltriethoxysilane 5

[0071] n-Hexadecyltrimethoxysilane 5

[0072] Isopropanol 10

[0073] Ethanol 15

[0074] water 25

[0075] Ethyl orthotitanate 0.5

[0076] Waterborne amino resin 4

[0077] Leveling agent 0.5

[0078] In a reactor equipped with a stirrer, a thermometer, a condenser, and a dropping funnel, add 5 grams of epoxy triethoxysilane, 20 grams of silicon methoxy-terminated polydimethylsiloxane with a molecular weight of 800-1000 Alkane, 5 grams of γ-aminopropyltriethoxysilane, 5 grams of n-hexadecyltrimethoxysilane, 10 grams of isopropanol, 4 grams of oxalic acid, 6 grams of phytic acid, control temperature 10-20 ° C, 1000 rpm Stir for 20 minutes, mix 15 grams of ethanol and 25 grams of water even...

Embodiment 3

[0080] Organic-inorganic hybrid coating material formula 3

[0081] Composition Amount (g)

[0082] Hydroxyethylidene diphosphonic acid 3

[0083] Phenylepoxydiethoxysilane 20

[0084] N-Cyclohexyl-γ-aminopropylmethyldimethoxysilane 5

[0085] Polyethylene glycol 2

[0086] Ethanol 20

[0087] water 30

[0088] Waterborne polyurethane resin 10

[0089] Trifunctional aziridine 2.2

[0090] Titanium dioxide pigment 7

[0091] Dispersant 0.1

[0092] Wetting agent 0.1

[0093] Leveling agent 0.2

[0094] Defoamer 0.3

[0095] In a reactor equipped with a stirrer, a thermometer, a condenser, and a dropping funnel, add 20 grams of phenylepoxydiethoxysilane, 5 grams of N-cyclohexyl-γ-aminopropylmethyldimethoxy silane, 2 grams of polyethylene glycol with an average molecular weight of 400, 10 grams of ethanol, 3 grams of hydroxyethylidene diphosphonic acid, controlled temperature 30-40 ° C, 500 rpm stirring for 10 minutes, after mixing 10 grams of ethanol and 30...

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PUM

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Abstract

This invention relates to a preparation method and application of excellent anticorrosion organic-inorganic hybridization paint. Chelating agent with good slow corrosion function and chelation is catalyst, it reacts with silane oxygen group compound, water, alcohol style solvent, cross blended matter to prepare organic-inorganic pant material, compact, flattening organic-inorganic hybridization paint can be got through control of reaction condition, the product's anticorrosion function can be improved by the chelating agent act with poly organosilicon times half oxygen alkyl. The paint doesn't contain chrome and other heavy metal element, the advantages are safety, non-poison, environmental protection, and good film capability, anticorrosion capability, anti-heat capability, chemical stability, mechanical stability, oxidation resistance, weathering resistance, insulativity etc. It can be used to metal surface protection and decoration.

Description

technical field [0001] The invention relates to the field of chemical industry, and relates to an organic-inorganic hybrid coating material with excellent corrosion resistance and a preparation method thereof. More specifically, the present invention relates to an organic-inorganic hybrid coating material with excellent corrosion resistance, which comprises a chelating agent; a siloxy compound; water; an alcohol solvent; a blending agent; The invention also relates to the preparation method and application of the organic-inorganic hybrid coating material with excellent corrosion resistance. The coating material of the invention can be applied to the decoration, protection and anticorrosion of metal surfaces. Background technique [0002] The traditional anti-corrosion method of steel is to use Cr 2 o 3 The protective layer is used to achieve the purpose of anti-corrosion and prolonging the service life. However, hexavalent chromium is toxic, carcinogenic, and harmful to ...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D163/00C09D133/00B05D7/14
Inventor 游波武利民邢文涛周树学顾广新
Owner FUDAN UNIV
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