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Automobile coating pre-dispersion body and preparation method thereof

A pre-dispersion, automotive paint technology, applied in coatings, anti-corrosion coatings, etc., can solve problems such as affecting the hue of the automotive paint system, increasing costs, etc., to achieve good dispersion effect, improve weather resistance, and enhance the effect of corrosion resistance.

Inactive Publication Date: 2019-02-19
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing raw materials for preparing automotive paint mainly include titanium dioxide. In order to increase the weather resistance and hiding properties of the automotive paint system, the method of increasing the amount of titanium dioxide is generally used. However, adding too much titanium dioxide will affect the hue of the automotive paint system and increase the cost.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0030] The present invention also provides a kind of preparation method of above-mentioned automobile paint predispersion, comprises the following steps:

[0031] a. Weigh the resin, solvent, dispersant, nano-titanium dioxide and ultra-fine zirconia according to the formula, and disperse in the dispersant at high speed for 0.5-1h after mixing;

[0032] b. Transfer to a shaker to shake for 3-5 hours, and let stand for 15-30 minutes to obtain the pre-dispersion of automobile paint.

[0033] Wherein, in the preparation method of the above-mentioned automobile paint pre-dispersion, in order to improve the dispersion effect, the high-speed dispersion speed in step a is 2000-3000 revolutions / min. The system is very stable at this speed, and the dispersion effect is the best. If it is too low, the dispersion effect will be poor, and the dispersion time will be too long; if it is too high, heat will be generated during the dispersion process and affect the final quality.

[0034] Onl...

Embodiment 1

[0037] Embodiment 1 prepares automobile paint predispersion with the inventive method

[0038] Prepare the raw materials required for the pre-dispersed slurry, nano-titanium dioxide, ultra-fine zirconia, resin, dispersant and solvent, and the equipment required for the preparation of the pre-dispersed slurry High-speed disperser and shaker; according to the formula, 73% thermoplastic acrylic Resin, 18% butyl acetate, 3% dispersant and 6% mixture of nano-titanium dioxide and ultra-fine zirconia (the ratio of the two is 8:2); the mixture is dispersed at a high speed in a high-speed disperser for 0.5- 1h; then the mixture is shaken in a shaker for 3-5h; then the mixture is left to stand for 15-30min, and finally it is poured into a sealed container for storage; nano-titanium dioxide and ultra-fine zirconia pre-dispersed slurry products are obtained.

[0039] The obtained pre-dispersed slurry and aluminum powder pigment are prepared in a certain proportion as the primary product o...

Embodiment 2

[0044] Embodiment 2 prepares automobile paint predispersion with the inventive method

[0045]Prepare the raw materials required for the pre-dispersed slurry, nano-titanium dioxide, ultra-fine zirconia, resin, dispersant and solvent, and the equipment required for the preparation of the pre-dispersed slurry High-speed disperser and vibrator; according to the formula, 65% thermoplastic acrylic Resin, 20% butyl acetate, 5% dispersant and 10% mixture of nano-titanium dioxide and ultra-fine zirconia (the ratio of the two is 8:2); the mixture is dispersed at a high speed in a high-speed disperser for 0.5- 1h; then the mixture is shaken in a shaker for 3-5h; then the mixture is left to stand for 15-30min, and finally it is poured into a sealed container for storage; nano-titanium dioxide and ultra-fine zirconia pre-dispersed slurry products are obtained.

[0046] The obtained pre-dispersed slurry and aluminum powder pigment are prepared in a certain proportion as the primary product...

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Abstract

The invention belongs to the technical field of chemical metallurgy, and particularly relates to an automobile coating pre-dispersion body and a preparation method thereof. For solving the problems that the weather resistance and the covering power of an existing automobile coating need to be improved, the automobile coating pre-dispersion body is prepared from, by weight, 65-75% of resin, 15-20%of solvents, 1-5% of a dispersing agent and 5-10% of a nanometer titanium dioxide and super-fine zirconium oxide mixture. The invention further provides a preparation method of the automobile coatingpre-dispersion body. The method comprises the steps that the resin, the solvents, the dispersing agent, the nanometer titanium dioxide and the super-fine zirconium oxide are weighed according to the formula and mixed to be uniform, and then high-speed dispersion inside the dispersing agent is performed for 0.5-1 h; the mixture is transferred into a vibrating machine for vibrating for 3-5 h, and standing is performed for 15-30 min to obtain the automobile coating pre-dispersion body. According to the automobile coating pre-dispersion body, the super-fine zirconium oxide is specifically added, and the weather resistance and covering power of an automobile coating film are improved; the preparation method is simple, the dispersing effect is good, the shelf life can be prolonged, and the automobile coating pre-dispersion body is suitable for being used and popularized.

Description

technical field [0001] The invention belongs to the technical field of chemical metallurgy, and in particular relates to an automobile paint predispersion and a preparation method thereof. Background technique [0002] Car paint is a protective film sprayed on the car, which is a kind of paint. Automotive paints are mainly divided into the following categories: ordinary paints, whose main components are resins, pigments and additives; metallic paints, which contain aluminum powder on the basis of ordinary paints. Automobile paint has good film fullness, high gloss, high hardness, good adhesion and excellent mechanical properties, excellent gloss retention, weather resistance, abrasion resistance, good acid resistance, alkali resistance, alcohol resistance, Gasoline resistance, and thus has been widely used. [0003] The existing raw materials for preparing automotive paint mainly include titanium dioxide. In order to increase the weather resistance and hiding properties of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/10C09D7/61
CPCC08K2003/2241C08K2003/2244C08K2201/011C09D5/103C09D7/61C09D133/00C08K3/22
Inventor 邢慧晋杜剑桥吴建春王斌
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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