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High-brightness black coating for automobile exterior decoration as well as preparation method and application of high-brightness black coating

A black paint and exterior decoration technology, applied in the paint field, can solve the problems of not pure enough paint film color, insufficient paint film hardness, insufficient blackness, etc., and achieve the effect of easy mass production, pure paint film color and high blackness

Pending Publication Date: 2022-04-22
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the automotive high-gloss black coatings sold on the market generally have the following obvious limitations: the automotive exterior parts have a certain curvature, which is prone to sagging during coating construction; The blackness is obviously insufficient; the hardness of the paint film is not enough, and it is easy to scratch; the paint film is often exposed to harsh environments such as sun exposure, rain soaking, and bird droppings corrosion.

Method used

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  • High-brightness black coating for automobile exterior decoration as well as preparation method and application of high-brightness black coating
  • High-brightness black coating for automobile exterior decoration as well as preparation method and application of high-brightness black coating
  • High-brightness black coating for automobile exterior decoration as well as preparation method and application of high-brightness black coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] A kind of automotive exterior high gloss black coating, its preparation method comprises the following steps:

[0027] 1) Add hydroxy acrylic resin to the mixing container, while stirring at a speed of 800.0-1200.0rpm, add anti-sag resin, black paste, solvent, leveling agent, drier, UV absorber / stabilizer in sequence ;

[0028] 2) After the feeding is completed, increase the speed to 1500.0-2000.0rpm, and stir and mix for 25-35min to obtain the high-gloss black paint for automobile exterior decoration.

[0029] Wherein, each component and parts by weight content:

[0030]

[0031] Specifically, the hydroxy acrylic resin is preferably one or both of FS-4660P hydroxy acrylic resin from Deqian (Shanghai) Chemical Co., Ltd., or SETALUX-1279 hydroxy acrylic resin from Allnex Resin (China) Co., Ltd.

[0032] The anti-sagging resin is preferably SETALUX-81198 type hydroxy acrylic resin of Allnex Resin (China) Co., Ltd.

[0033] The black slurry is prepared by the followi...

Embodiment 1

[0042] A preparation method of high-gloss black paint for automobile exterior decoration, comprising the following steps:

[0043] 1) Adjust the speed of the mixer to 800.0-1200.0rpm, and then sequentially add hydroxyacrylic resin, anti-sag resin, black paste, solvent, leveling agent, drier, UV absorber / stabilizer; each component Consumption is as shown in table 1;

[0044] 2) After feeding, increase the rotation speed to 1500.0-2000.0 rpm, and stir and mix for 30 minutes to obtain high-gloss black paint for automobile exterior decoration.

[0045] Table 1 Types of Components Used and Quality and Dosage

[0046]

[0047]

[0048] Wherein, black slurry adopts following method to prepare:

[0049] Mix the first part of color paste solvent, dispersant, toner, and general-purpose resin evenly, grind to a fineness of ≤10 μm, and then add the second part of color paste solvent to adjust the viscosity to 80.0-100.0S (T4 cup) to obtain black paste material;

[0050] Wherein,...

Embodiment 2、 Embodiment 3

[0059] The types and mass dosages of the components in this example are shown in Table 3 and Table 4, respectively, and the rest, including the coating preparation method, coating preparation method, and coating testing standards, are the same as in Example 1. The test results are shown in Table 5.

[0060] Component type and quality consumption used in table 3 embodiment 2

[0061]

[0062] Component type and quality consumption used in the embodiment 3 of table 4

[0063]

[0064]

[0065] Table 5 Coating Test Standards and Test Results

[0066]

[0067]

[0068] According to embodiment 1, embodiment 2 and embodiment 3 contrast, the blackness of embodiment 1 is slightly lower than embodiment 2, embodiment 3; Embodiment column 2 is softer than actual case 1, embodiment 3 hardness slightly; Embodiment 3 black The degree and hardness are relatively good. Examples 1, 2, and 3 all have the characteristics of high gloss and high fullness, and at the same time mee...

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Abstract

The invention relates to an automobile exterior high-brightness black coating and a preparation method thereof. The preparation method comprises the step of mixing the following components in parts by weight: 40-60 parts of hydroxy acrylic resin; 5 to 10 parts of anti-sagging resin; 5-10 parts of black slurry; 20-40 parts of a solvent; 0.01-2 parts of a leveling agent; 0.001 to 0.02 part of a drier; and 0.5-1.0 part of an ultraviolet light absorber / stabilizer. Compared with the prior art, the high-brightness black coating disclosed by the invention is simple in preparation method, moderate in cost and easy to produce in batches, can be used for spraying automobile exterior trimming parts, has the characteristics of excellent constructability, sagging resistance, high hardness, difficulty in scratching, pure paint film color, partial blue phase, extremely high blackness, high gloss, high fullness and the like, and can be widely applied to automobile exterior trimming parts. Meanwhile, physical and chemical performance tests of hydrolysis resistance, fuel oil resistance, gravel impact resistance, illumination resistance, bird droppings resistance and the like are met.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a high-gloss black coating for automobile exterior decoration and a preparation method and application thereof. Background technique [0002] The application of coatings is very extensive, involving all aspects of the national economy and people's lives, and automotive coatings are booming with the rise of the automotive industry. With the continuous development of society and the improvement of living standards and ecological balance requirements, people's requirements for high decoration of cars are also getting higher and higher. In addition to the gorgeous appearance, automotive topcoats also have high performance requirements. Such as light resistance, hydrolysis resistance, scratch resistance, gravel impact resistance, acid and alkali resistance, fuel oil resistance, bird droppings resistance and other properties. [0003] At present, with the development of automotive coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/65C09D7/61C09D7/47C09F9/00
CPCC09D133/00C09D7/65C09D7/61C09D7/47C09F9/00C08L2205/025C08L33/00C08L61/02C08L71/02C08K3/04C08K5/57
Inventor 朱忠敏潘安
Owner DONGLAI COATING TECH SHANGHAI
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