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Anticorrosion aqueous paint and preparation method thereof

A water-based coating and coating technology, applied in anti-corrosion coatings, natural resin coatings, coatings, etc., can solve problems such as consumption and achieve the effect of saving oil resources

Inactive Publication Date: 2014-04-16
SHENZHEN OCEANPOWER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The emulsion of the existing anti-corrosion water-based paint adopts synthetic emulsion, which is extracted from petroleum. The anti-corrosion water-based paint prepared from the synthetic emulsion has good water permeability, strong adhesion and good anti-corrosion effect. Emulsion is an emulsion extracted from petroleum, which is a consumption of limited petroleum resources on the earth. From the perspective of saving petroleum resources, we urgently need a kind of anti-corrosion water-based coating, whose emulsion comes from renewable resources, and adopts this The anti-corrosion water-based coating prepared by the emulsion has the same good performance as the anti-corrosion water-based coating prepared by the synthetic emulsion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of natural emulsion

[0033] The components and their weight percentages in the natural emulsion in this example are: 1% emulsifier; 60% soybean oil; 15% rosin; 15% acrylic acid; 9% water.

[0034] The preparation method of natural emulsion in the present embodiment is as follows:

[0035] (1) Slowly add active monomers or / and active monomer oligomers of set proportions in vegetable oil and natural resins in a set proportion, and then heat up at 15°C for 1 hour to obtain a viscosity of 3Pa·s The product, the unreacted active monomer polymer is released under vacuum conditions, that is, the polymer system is obtained;

[0036] (2) While stirring the polymer system at a speed of 800 rpm, slowly add an emulsifier in a set ratio; after the components are fully mixed, slowly add the emulsifier to it while stirring at a speed of 800 rpm A certain proportion of deionized water;

[0037] (3) After adding the deionized water, stir and mix at 1800 rpm to adjust the...

Embodiment 2

[0054] Preparation of natural emulsion

[0055] The components and their weight percentages in the natural emulsion are: 2% emulsifier; 40% castor oil; 30% shellac; 20% polyurethane; 8% water.

[0056] Natural emulsion preparation method is as follows in the present embodiment:

[0057] (1) Slowly add active monomers or / and active monomer oligomers of set proportions in vegetable oil and natural resin in set proportions, then heat up at 20°C and react for 1.5 hours to obtain a viscosity of 4Pa·s The product, the unreacted active monomer polymer is released under vacuum conditions, that is, the polymer system is obtained;

[0058] (2) While stirring the polymer system at a speed of 1000 rpm, slowly add an emulsifier in a set ratio; after the components are fully mixed, slowly add the emulsifier to it while stirring at a speed of 1000 rpm A certain proportion of deionized water;

[0059] (3) After adding the deionized water, stir and mix at 2000 rpm to adjust the viscosity of...

Embodiment 3

[0075] Preparation of natural emulsion

[0076] The components and their weight percentages in the natural emulsion are: 1% emulsifier; 70% corn oil; 9% natural lacquer; 5% polyurethane; 15% water.

[0077] Natural emulsion preparation method is as follows in the present embodiment:

[0078] (1) Slowly add active monomers or / and active monomer oligomers of set proportions in vegetable oil and natural resins in a set proportion, then heat up at 25°C and react for 0.5 hours to obtain a viscosity of 2Pa·s The product, the unreacted active monomer polymer is released under vacuum conditions, that is, the polymer system is obtained;

[0079] (2) While stirring the polymer system at a speed of 1200 rpm, slowly add an emulsifier in a set ratio; after the components are fully mixed, slowly add the emulsifier to it while stirring at a speed of 1200 rpm A certain proportion of deionized water;

[0080] (3) After adding the deionized water, stir and mix at 2200 rpm to adjust the visco...

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Abstract

The invention relates to anticorrosion aqueous paint. The anticorrosion aqueous paint comprises the compositions in percent by weight: 10-20% of water, 0.2-0.5% of an antiseptic, 0.1-0.5% of an antifoaming agent, 0.5-0.8% of a dispersant, 32-50% of a natural emulsion, 35-45% of a pigment / a filling material, 0.1-0.3% of a wetting agent and 0.5-1% of a thickening agent. Compared with conventional anticorrosion aqueous paint, the anticorrosion aqueous paint provided by the invention employs the renewable natural emulsion as the emulsion, so that the petroleum resource is saved; and also, plant oil and natural resin in the natural emulsion in the paint are biodegradable under the effect of lipase, so that waste paint can be biodegraded by employing lipase, and thus the paint has no pollution to environment and is green and environment-friendly.

Description

【Technical field】 [0001] The invention relates to coatings, in particular to an anti-corrosion water-based coating and a preparation method thereof. 【Background technique】 [0002] At present, the focus of research on corrosion problems in the world is metal materials. Steel is the most used material today, and it is also the most easily corroded material. The best way to reduce metal corrosion is to apply anti-corrosion coatings on the metal surface. [0003] With the further improvement of environmental protection regulations, new coatings with low VOC or zero VOC emissions have become the focus of research and development for the purpose of reducing the load on the earth, and the research and development of anti-corrosion water-based coatings is even more attractive. [0004] The emulsion of the existing anti-corrosion water-based paint adopts synthetic emulsion, which is extracted from petroleum. The anti-corrosion water-based paint prepared from the synthetic emulsion h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D191/00C09D193/00C09D5/08
Inventor 王守臣潘鑫刘结生沈毅翁应全何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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