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Water dispersible environmentally-friendly nanometer structure automotive finish paint and preparation method thereof

An environment-friendly, nano-structured technology, applied in biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., can solve the problem of large polymer emulsion particle size, poor paint film compactness, and gaps in protection and decoration effects It can achieve the effect of low surface tension, enhanced adhesion and high specific surface area

Inactive Publication Date: 2012-06-27
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the water-based automotive coatings reported in the above-mentioned several patents all use water-based emulsions as the main film-forming material, they have certain environmental protection properties. The compactness is poor, and the protective and decorative effects are far behind the traditional oily car topcoat.

Method used

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  • Water dispersible environmentally-friendly nanometer structure automotive finish paint and preparation method thereof
  • Water dispersible environmentally-friendly nanometer structure automotive finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 50% of Nanopolymer Emulsion 1, 0.2% of wetting agent, 0.6% of dispersant, 0.02% of defoamer, 0.3% of pH regulator, 0.15% of preservative, 0.15% of antifungal agent and 10.58% deionized water were added into the paint mixing tank, and dispersed for 10 minutes at a disperser speed of 400-800 rpm. Then add 15% titanium dioxide, 10% black iron oxide, 4% mica powder, 4% barium sulfate, 0.5% zinc phosphate, and disperse for 15 minutes at a disperser speed of 800 rpm. Then use a sand mill to grind to a fineness of less than 60 μm. Add 3% drier according to the recipe, stir at 800 rpm for 5 minutes, and finally add 1.5% thickener to adjust the viscosity to pass, filter and pack with a 100-mesh filter.

Embodiment 6

[0040] Weigh 60% of Nanopolymer Emulsion 2, 0.2% of wetting agent, 0.4% of dispersant, 0.02% of defoamer, 0.2% of pH regulator, 0.1% of preservative, 0.05% of antifungal agent and 10.78% deionized water were added into the paint mixing tank, and dispersed for 10 minutes at a disperser speed of 400-800 rpm. Then add 10% titanium dioxide, 5% black iron oxide, 2% talcum powder, 5% mica powder, 3% barium sulfate, 0.25% zinc phosphate, and disperse at a disperser speed of 800 rpm 15 minutes. Then use a sand mill to grind to a fineness of less than 60 μm. Add 2% drier according to the formula, stir at 800 rpm for 5 minutes, finally add 1% thickener, adjust the viscosity to pass, filter with 100-mesh filter, and pack.

[0041] Table 1: Component composition embodiment 1-10 of the present invention

[0042]

[0043] Table 2: Performance indicators of water-dispersed and environmentally friendly nanostructured automotive topcoats prepared by formulation

[0044]

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Abstract

The invention relates to water dispersible environmentally-friendly nanometer structure automotive finish paint and a preparation method thereof and belongs to the technical field of production of coating. The finish paint consists of water dispersible nanometer polymer emulsion with a grain size of below 100 nanometers, deionized water, a pigment, an inert antirust pigment, an active antirust pigment, a filler, an aid and the like. The water dispersible nanometer polymer emulsion with a grain size of below 100 nanometers consists of hydrophilic acrylate copolymer, hydrophobic polymer, waterproof liquid and deionized water, wherein the hydrophobic polymer is one of polyurethane, unsaturated fatty acid or dry oil-improved polyurethane. The invention has the beneficial effects that the water dispersible environmentally-friendly nanometer structure automotive finish paint has the characteristics of safety, environment friendliness and innocuity; and meanwhile, a formed paint film is very compact, and the water resistance and the protection and decoration effect of formed paint film achieve or exceed those of traditional oily automotive finish paint. The water-dispersible environmentally-friendly nanometer structure automotive finish paint is widely applied to waterborne automotive coating as well as the coating industry, thereby having great application value and market prospect.

Description

technical field [0001] The invention belongs to the technical field of paint production, and in particular relates to a water-dispersed environment-friendly nano-structure automobile topcoat and a preparation method thereof. Background technique [0002] Traditional automotive topcoats are mainly solvent-based paints, which contain a large amount of organic volatiles (about 50%). These organic volatiles will volatilize into the atmosphere during the preparation and coating of automotive topcoats, which not only pollute the environment and Waste of resources, but also seriously endanger human health. With the enhancement of environmental awareness and the improvement of environmental regulations, the use of volatile organic compounds (VOC) and hazardous air pollutants (HAP) in traditional solvent-based automotive coatings is increasingly restricted, and water-based coatings are getting more and more attention. . [0003] Automotive coatings, especially automotive topcoats, ...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D133/00C09D5/08C09D5/14C09D7/12
Inventor 陈广义张万喜魏志勇
Owner DALIAN UNIV OF TECH
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