阅读说明：本技术 一种汽车用水性环保珠光漆及其制备方法 (Water-based environment-friendly pearlescent paint for automobiles and preparation method thereof ) 是由 宋铁成 刘彩虹 宋传军 穆世鹏 于 2020-12-31 设计创作，主要内容包括：本发明提供了一种汽车用水性环保珠光漆,其特征在于,该漆为单组份水性漆,由如下重量分数比的物料制备而成:水性改性丙烯酸树脂10-20份；水性氨基树脂25-30份；水性珠光浆15-25份；稳定剂1-3份；润湿剂1-3份；流平剂2-5份；抗闪锈剂1-4份；消泡剂0.5-2份；增稠剂2-5份；成膜助剂5-10份；附着力促进剂1-3份；去离子水5-15份。该产品附着力、硬度、耐老化、耐盐雾性能良好,性能远超传统溶剂漆。(The invention provides water-based environment-friendly pearlescent paint for automobiles, which is characterized in that the paint is single-component water-based paint and is prepared from the following materials in parts by weight, 10-20 parts of water-based modified acrylic resin; 25-30 parts of water-based amino resin; 15-25 parts of water-based pearlescent slurry; 1-3 parts of a stabilizer; 1-3 parts of a wetting agent; 2-5 parts of a leveling agent; 1-4 parts of flash rust inhibitor; 0.5-2 parts of a defoaming agent; 2-5 parts of a thickening agent; 5-10 parts of a film-forming assistant; 1-3 parts of an adhesion promoter; 5-15 parts of deionized water. The product has good adhesive force, hardness, aging resistance and salt spray resistance, and the performance of the product is far superior to that of the traditional solvent paint.)

1. The water-based environment-friendly pearlescent paint for the automobile is characterized by being prepared from the following materials in parts by weight:

2. the water-based environment-friendly pearlescent paint for automobiles according to claim 1, characterized in that:

the water-based pearlescent slurry is selected from water-based pearlescent slurries with fineness of less than 5 microns.

3. The water-based environment-friendly pearlescent paint for automobiles according to claim 1, characterized in that:

the stabilizer is selected from one or more of water-based polyamide wax slurry.

4. The water-based environment-friendly pearlescent paint for automobiles according to claim 1, characterized in that:

the film-forming assistant is selected from one or more of alkyl alcohol ester and polyhydric alcohol alkyl ether.

5. The water-based environment-friendly pearlescent paint for automobiles according to claim 1, characterized in that:

the film forming assistant is selected from one or more of dodecyl alcohol ester, dipropylene glycol butyl ether and propylene glycol butyl ether.

6. The water-based environment-friendly pearlescent paint for automobiles according to claim 1, characterized in that:

the adhesion promoter is selected from one or more silane coupling agents.

7. The water-based environment-friendly pearlescent paint for the automobile according to claim 1, which is prepared from the following materials in parts by weight:

8. the aqueous environment-friendly pearlescent paint for automobiles according to any one of claims 1 to 7, characterized in that:

the preparation method comprises the following specific steps:

s1, mixing water-based modified acrylic resin and water-based amino resin;

s2, adding a stabilizer, a wetting agent, a leveling agent, an anti-flash rust agent, a defoaming agent and a thickening agent under the condition of high-speed stirring, and stirring for 10-30 min;

s3, adding a film forming aid, and stirring for 10-30 min;

s4, adding the water-based pearlescent slurry, and stirring for 20-40 min;

s5, slowly adding an adhesion promoter and deionized water, and stirring for 5-20 min;

and S6, filtering to obtain a finished product.

9. The aqueous environment-friendly pearlescent paint for automobiles according to any one of claims 1 to 7, characterized in that:

in S2, the high-speed stirring is 800-.

10. The aqueous environment-friendly pearlescent paint for automobiles according to any one of claims 1 to 7, characterized in that:

in S6, the filtration was performed at 100-400 mesh.

Technical Field

The invention relates to the field of paint, in particular to water-based environment-friendly pearlescent paint for automobiles and a preparation method thereof.

Background

At present, automobile finish paint, especially pearlescent paint, is solvent-based, has high VOC (volatile organic compound) and contains benzene toxic substances, and has great harm to the environment and human health. The solvent type paint is required to reach the environmental protection standard in the using process, and has high environmental protection cost (high cost of environmental protection facilities and high maintenance cost of facilities in the using process), so the environmental protection cost of the solvent type paint is greatly increased along with the continuous reduction of the VOC emission requirements in various places, and some traditional solvent paint coating lines are difficult to meet the environmental protection requirements.

In addition, at present, the performance and the appearance of the water-based pearlescent paint are relatively poor, and the glossiness of the water-based pearlescent paint is poor and is dark after being coated; and due to poor pearl distribution uniformity, the paint tends to show uneven luster and obvious orange peel after painting.

Disclosure of Invention

The invention aims to overcome the defects and provide the water-based paint which not only can ensure that the brightness is high and the color distribution is uniform after the pearlescent paint is sprayed, and has the characteristics of good appearance and decoration, but also can meet the environmental protection requirement by using the water-based paint, and can greatly reduce the environmental protection cost.

The invention provides a water-based environment-friendly pearlescent paint for an automobile, which is a single-component water-based paint and is characterized by being prepared from the following materials in parts by weight:

further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the waterborne modified acrylic resin is preferably selected from modified acrylic dispersions with the mark number FD-6205;

the aqueous amino resin is preferably selected from those sold under the trade name Cymel 325.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the above water-based pearlescent slurry is selected from water-based pearlescent slurry with fineness of below 5 μm.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the anti-settling agent is selected from one or more of water-based polyamide wax slurry.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the film-forming assistant is one or more selected from alkyl alcohol ester and polyhydric alcohol alkyl ether.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the film forming assistant is one or several selected from dodecyl alcohol ester, dipropylene glycol butyl ether and propylene glycol butyl ether.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the adhesion promoter is selected from one or more silane coupling agents, and the preferred type is SHINETSU KBM 503.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the material is prepared from the following materials in parts by weight:

further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: the preparation method comprises the following specific steps:

s1, mixing water-based modified acrylic resin and water-based amino resin;

s2, adding a stabilizer, a wetting agent, a leveling agent, an anti-flash rust agent, a defoaming agent and a thickening agent under the condition of high-speed stirring, and stirring for 10-30 min;

s3, adding a film forming aid, and stirring for 10-30 min;

s4, adding the water-based pearlescent slurry, and stirring for 20-40 min;

s5, slowly adding an adhesion promoter and deionized water, and stirring for 5-20 min;

and S6, filtering to obtain a finished product.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: in S2, the high-speed stirring is 800-.

Further, the invention provides a water-based environment-friendly pearlescent paint for automobiles, which is characterized in that: in S6, the filtration was performed at 100-400 mesh.

The invention has the following functions and effects:

the product of the invention has the following characteristics:

1. the product is environment-friendly, and the influence on people and the environment is reduced;

2. greatly reducing the environmental protection cost (environmental protection facilities, maintenance cost and the like);

3. compared with the existing water paint on the market, the appearance of the water paint is greatly improved, and the water paint has good decoration;

4. the paint has good adhesive force, hardness, aging resistance and salt spray resistance, and the performance of the paint is far superior to that of paint.

Detailed Description

Example 1 the water-based environment-friendly pearlescent paint for automobiles is a single-component water-based paint No. 1

The raw materials comprise: 20 parts of waterborne modified acrylic resin (FD-6205 modified acrylic dispersion), 25 parts of waterborne amino resin (Cymel 325), 25 parts of waterborne pearlescent slurry (merck pearlescent slurry with fineness less than 5 micrometers), 3 parts of stabilizer (Fenghong PA-600), 3 parts of wetting agent (BYK333), 5 parts of leveling agent (BYK310), 4 parts of Flash rust inhibitor (HALOX Flash-x 330), 2 parts of defoaming agent (LOPON E81), 2 parts of thickener (Dow DR-72), 8 parts of film-forming additive (dodecyl alcohol ester, 3 parts of propylene glycol butyl ether) and 3 parts of adhesion promoter (SHINETSU KBM 503); 5 parts of deionized water.

The preparation method comprises the following steps: 20 parts of waterborne modified acrylic resin, 25 parts of waterborne amino resin, 3 parts of stabilizer, 3 parts of wetting agent, 5 parts of flatting agent, 5 parts of flash rust inhibitor, 2 parts of defoaming agent and 2 parts of thickener under the stirring condition of 1000 revolutions per minute, stirring for 20 minutes, adding 8 parts of film-forming assistant, stirring for 20 minutes, 25 parts of waterborne pearlescent slurry, stirring for 30 minutes, finally slowly adding 3 parts of adhesion promoter and 5 parts of deionized water, stirring for 10 minutes, filtering with 200 meshes and finishing the preparation.

Example 2 the water-based environment-friendly pearlescent paint for automobiles is a single-component water-based paint No. 2

The raw materials comprise: 20 parts of water-based modified acrylic resin, 25 parts of water-based amino resin, 15 parts of water-based pearlescent slurry, 3 parts of stabilizer, 3 parts of wetting agent, 5 parts of flatting agent, 1 part of flash rust inhibitor, 2 parts of defoaming agent, 5 parts of thickener, 8 parts of film-forming assistant and 3 parts of adhesion promoter; and 15 parts of deionized water.

The preparation method comprises the following steps: 20 parts of waterborne modified acrylic resin, 25 parts of waterborne amino resin, 3 parts of stabilizer, 3 parts of wetting agent, 5 parts of flatting agent, 1 part of flash rust inhibitor, 2 parts of defoaming agent and 5 parts of thickener under the stirring condition of 1000 revolutions per minute, stirring for 20 minutes, adding 8 parts of film-forming assistant, stirring for 20 minutes, 15 parts of waterborne pearlescent slurry, stirring for 30 minutes, finally slowly adding 3 parts of adhesion promoter and 15 parts of deionized water, stirring for 10 minutes, filtering with 200 meshes and finishing the preparation.

Example 3 the water-based environment-friendly pearlescent paint for automobiles is a single-component water-based paint No. 3

The raw materials comprise: 10 parts of water-based modified acrylic resin, 30 parts of water-based amino resin, 25 parts of water-based pearlescent slurry, 3 parts of stabilizer, 3 parts of wetting agent, 5 parts of flatting agent, 4 parts of flash rust inhibitor, 2 parts of defoaming agent, 3 parts of thickener, 8 parts of film-forming assistant and 1 part of adhesion promoter; 6 parts of deionized water.

The preparation method comprises the following steps: 10 parts of waterborne modified acrylic resin and 30 parts of waterborne amino resin, adding 3 parts of stabilizer, 3 parts of wetting agent, 5 parts of flatting agent, 4 parts of flash rust inhibitor, 2 parts of defoaming agent and 3 parts of thickener under the stirring condition of 1000 revolutions per minute, stirring for 20 minutes, adding 8 parts of film-forming assistant, stirring for 20 minutes, adding 25 parts of waterborne pearlescent slurry, stirring for 30 minutes, finally slowly adding 1 part of adhesion promoter and 6 parts of deionized water, stirring for 10 minutes, filtering with 200 meshes, and finishing the preparation.

The aqueous coating materials were prepared as described in examples 1, 2 and 3, respectively, and then spray-painted, on electrophoretic primer and standard panels painted in FD-6031, flash-dried at 80 ℃ for 15min, then dried at 140 ℃ (dry film thickness 20 μm), and finally finished with FD-6083 aqueous varnish.

The results are as follows:

example 4. the water-based environment-friendly pearlescent paint for automobiles is a single-component water-based paint 4#

The raw materials comprise: 20 parts of water-based modified acrylic resin, 25 parts of water-based amino resin, 25 parts of water-based pearlescent slurry, 2 parts of stabilizer, 2 parts of wetting agent, 5 parts of flatting agent, 4 parts of flash rust inhibitor, 1 part of defoaming agent, 2 parts of thickener, 5 parts of film-forming assistant and 1 part of adhesion promoter; 10 parts of deionized water.

The preparation method comprises the following steps: 20 parts of waterborne modified acrylic resin, 25 parts of waterborne amino resin, 2 parts of stabilizer, 2 parts of wetting agent, 5 parts of flatting agent, 4 parts of flash rust inhibitor, 1 part of defoaming agent and 2 parts of thickener under the stirring condition of 1200 rpm, stirring for 15min, adding 5 parts of film-forming assistant, stirring for 25min, 25 parts of waterborne pearlescent slurry, stirring for 30min, finally slowly adding 1 part of adhesion promoter and 6 parts of deionized water, stirring for 20min, and filtering with 300 meshes to complete the preparation.

Example 5 the water-based environment-friendly pearlescent paint for automobiles is a single-component water-based paint 5#

The raw materials comprise: 20 parts of water-based modified acrylic resin, 30 parts of water-based amino resin, 25 parts of water-based pearlescent slurry, 1 part of stabilizer, 1 part of wetting agent, 2 parts of flatting agent, 1 part of flash rust inhibitor, 0.5 part of defoaming agent, 2 parts of thickener, 10 parts of film-forming assistant and 0.5 part of adhesion promoter; 7 parts of deionized water.

The preparation method comprises the following steps: 20 parts of waterborne modified acrylic resin, 30 parts of waterborne amino resin, 1 part of stabilizer, 1 part of wetting agent, 2 parts of flatting agent, 1 part of flash rust inhibitor, 0.5 part of defoaming agent and 0.1 part of thickener under the stirring condition of 1200 r/min, stirring for 15min, adding 10 parts of film-forming assistant, stirring for 25min, 25 parts of waterborne pearlescent slurry, stirring for 30min, finally slowly adding 0.5 part of adhesion promoter and 7 parts of deionized water, stirring for 20min, and filtering with 300 meshes to obtain the waterborne modified acrylic resin.

The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments thereof, to facilitate an understanding and appreciation of the invention by those skilled in the art, and it is not intended to limit the invention to the specific embodiments described herein.

It will be obvious to those skilled in the art that many simple derivations or substitutions can be made without inventive effort without departing from the inventive concept. Therefore, simple modifications to the present invention by those skilled in the art according to the present disclosure should be within the scope of the present invention.