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Nano waterborne automotive coating and preparation method thereof

A water-based, coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of improving, difficult, and disadvantageous to the technical level of automobile coating, and achieve the effect of high hardness and good flexibility

Active Publication Date: 2013-04-03
山东中科纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Internationally, water-based paint technology is being vigorously developed instead of solvent-based paint technology. If my country does not use water-based paint, international exchanges and cooperation in coating technology will become more and more difficult in the future, which is not conducive to the improvement of my country's automobile coating technology level.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Preparation of nano-pulp

[0039] Mix nano-titanium dioxide, Solsperse-4000 polymer dispersant, and propylene glycol methyl ether acetate in a mass ratio of 1:0.1:0.8, then ultrasonically disperse for 30 minutes; then grind in a nano-bead mill for 2 hours to obtain nano-slurry .

[0040] 2. Preparation of nano-modified water-based automotive paint

[0041] The nano water-based automotive paint of the present invention is composed of two components, A and B, in parts by weight, and the specific formula is as follows:

[0042] A component:

[0043] XP2470 resin: 55 parts;

[0044] Titanium dioxide nano slurry: 1 part;

[0045] Deionized water: 6 parts;

[0046] PMA (propylene glycol methyl ether acetate): 7 parts;

[0047] After stirring at high speed for 10 minutes, add the following materials:

[0048] Dispersant BYK-190: 0.4 parts;

[0049] Defoamer BYK-093: 0.4 parts;

[0050] Leveling agent BYK-333: 0.3 parts;

[0051] Anti-settling agent BYK-E420: 0.5...

Embodiment 2

[0059] 1. Preparation of nano-pulp

[0060] Press nano titanium dioxide, Solsperse-4000 polymer dispersant, propylene glycol methyl ether acetate

[0061] After mixing according to the mass ratio of 1:0.2:1.0, perform ultrasonic dispersion for 30 minutes; then grind in a ball mill for 2 hours to obtain nano-slurry;

[0062] 2. Preparation of nano-modified water-based automotive paint

[0063] The nano water-based automotive paint of the present invention is composed of two components, A and B, in parts by weight, and the specific formula is as follows:

[0064] A component:

[0065] XP2470 resin: 50 parts;

[0066] Titanium dioxide nano slurry: 5 parts;

[0067] Deionized water: 8 parts;

[0068] PMA (propylene glycol methyl ether acetate): 9 parts;

[0069] After stirring at high speed for 10 minutes, add the following materials:

[0070] Dispersant BYK-182: 0.5 parts;

[0071] Defoamer BYK-093: 0.5 parts;

[0072] Leveling agent BYK-380: 0.2 parts;

[0073] Anti-...

Embodiment 3

[0081] 1. Preparation of nano-pulp

[0082] Press nano titanium dioxide, Solsperse-4000 polymer dispersant, propylene glycol methyl ether acetate

[0083] After mixing according to the mass ratio of 1:0.15:0.7, perform ultrasonic dispersion for 30 minutes; then grind in a ball mill for 2 hours to obtain nano-slurry;

[0084] 2. Preparation of nano-modified water-based automotive paint

[0085] Nano water-based automotive paint of the present invention is composed of two components, A and B, in parts by weight, and the specific formula is as follows:

[0086] A component:

[0087] XP2470 resin: 53 parts;

[0088] Titanium dioxide nano slurry: 2.5 parts;

[0089] Deionized water: 10 parts;

[0090] PMA (propylene glycol methyl ether acetate): 11 parts

[0091] After stirring at high speed for 10 minutes, add the following materials:

[0092] Dispersant BYK-182: 0.3 parts;

[0093] Defoamer BYK-093: 0.3 parts;

[0094] Leveling agent BYK-380: 0.1 parts;

[0095] Anti-...

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PUM

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Abstract

The invention discloses a nano waterborne automotive coating and a preparation method thereof. The formula of the coating comprises 45 to 55 parts of waterborne polyurethane resin, 1 to 5 parts of nano titanium dioxide slurry, 2 to 4 parts of aid, 15 to 20 parts of pigment, 5 to 10 parts of filler, and 8 to 15 parts of solvent (water). The preparation method comprises the following steps of: proportioning the raw material, dispersing and grinding to the fineness being less than 20 microns to obtain a component A; preparing a component B from a hydrophilic polyisocyanate curing agent; and mixing and curing the component A and the component B to prepare the waterborne automotive coating. The coating has the advantages of bright color, impact resistance, ultraviolet resistance, environment friendliness, economical efficiency and energy conservation.

Description

technical field [0001] The invention relates to a nano-modified water-based automotive paint technology and a preparation method thereof. Background technique [0002] In order to protect the living environment of human beings, the development trend of automobile painting today is low pollution and pollution-free. The biggest advantage of water-based paint is that the coating quality is comparable to that of traditional solvent-based paint, but the VOC emission is small; its emission is about one-third of that of solvent-based paint, and it is the only way to achieve low pollution of metallic glitter paint. Therefore, the use of water-based paint is of great significance. [0003] In recent years, international requirements for VOC emissions have become increasingly stringent. For example, the German Air Purification Act in 1995 stipulates that the VOC emission of the painted area of ​​the body should be less than 35g / m2. Driven by the environmental protection requirement...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12
Inventor 金少波邱再明
Owner 山东中科纳米科技有限公司
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