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Automobile coating with high weather resistance and high corrosion resistance and preparation method thereof

A technology with high weather resistance and corrosion resistance, applied in the field of automotive paint, it can solve the problems of easy loss of gloss and rust in automotive paint coatings, and achieve the effects of achieving excellent characteristics, reducing costs, and improving weather resistance and corrosion resistance.

Inactive Publication Date: 2020-06-16
河南东澳化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a highly weather-resistant and highly corrosion-resistant automotive coating and a preparation method thereof, which has the advantages of high weather resistance and corrosion resistance, and solves the problem that the above-mentioned car paint is prone to loss of gloss and rust The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In step (2), the two groups of reagents are not mixed separately in proportion and then mixed in proportion for the second time, but directly mixed in proportion at one time.

[0025] The chemical properties of the car paint obtained by the method are changed, the corrosion resistance is poor, and it is not easy to grasp the addition ratio of reagents.

Embodiment 2

[0027] After the two groups of reagents in step (2) are separately proportioned, the two groups of mixed reagents are mixed twice at a ratio of 15:1, and the ratio of each reagent in the first group is: acrylic modified polysiloxane resin 45%, low hydroxyl acrylic resin 20%, leveling agent 0.5%, drier 0.03%, butyl acetate or xylene 19.5%; the proportion of each reagent in the second group is: isocyanate curing agent 55%, butyl acetate 45% %.

[0028] The difference between Example 2 and Example 1 is that the two groups of mixed reagents are mixed once in advance, and then the two groups of mixed reagents are mixed for the second time, which greatly ensures the sequence of chemical reactions and is easier to control. The addition ratio of each agent, but due to the low proportion of acrylic modified polysiloxane resin, low hydroxyl acrylic resin, butyl acetate or xylene, and isocyanate curing agent, the hardness of the finished coating is too low and it is easy to wear.

Embodiment 3

[0030] After the two groups of reagents in step (2) are separately proportioned, the two groups of mixed reagents are mixed twice at a ratio of 15:1, and the ratio of each reagent in the first group is: acrylic modified polysiloxane resin 55%, low hydroxyl acrylic resin 25%, leveling agent 0.5%, drier 0.03%, butyl acetate or xylene 34.5%; the proportion of each reagent in the second group is: isocyanate curing agent 60%, butyl acetate 40% %

[0031] The difference between Example 3 and Example 2 is: separate mixing and then secondary mixing, which ensures the sequence and convenient matching of the chemical reactions of each reagent, and acrylic modified polysiloxane resin, low hydroxyl acrylic resin, acetic acid A low proportion of butyl esters or xylenes, combined with the correct mix of isocyanate curing agents, results in a hard finish with good corrosion resistance in the finished car paint.

[0032] The beneficial effects of the present invention are: the highly weather...

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Abstract

The invention relates to the technical field of automobile paint, and discloses automobile coating with high weather resistance and high corrosion resistance and a preparation method thereof. The coating is prepared from acrylic acid modified polysiloxane resin and low-hydroxyl acrylic resin, and the preparation method comprises the following steps in percentage by weight: ingredient selection, mixing of first ingredients, mixing of second ingredients and filtration. The automobile coating is prepared by adopting the acrylic acid modified polysiloxane resin and the low-hydroxyl acrylic resin so that the cost is reduced, the weather resistance and the corrosion resistance can be obviously improved, and the service life of the coating material can achieve more than 20 years; the two groups of the separately-prepared mixed reagents are different from the previous one-by-one addition manner of the existing vehicle paint coating material, and the reagents with similar attributes and effectsare prepared in advance, such that the ordered reaction of the reagents can be ensured through the operation, the ratio can be easily controlled, and the excellent characteristics of the coating material can be achieved.

Description

technical field [0001] The invention relates to the technical field of automobile paint, in particular to a highly weather-resistant and highly corrosion-resistant automobile paint and a preparation method thereof. Background technique [0002] Car paint is a kind of protective film sprayed on the car. It is a kind of paint, which makes the car body not easy to be corroded, and gives people a beautiful evaluation. Different car paints have different effects, and paint it The problem itself and the technology and painting environment are all very important. Most car owners spend more energy on the beauty of their cars, because this is their way of showing off their individuality. [0003] Existing car paints usually use acrylic resin paints. When used in coastal areas with high humidity and high ultraviolet rays, the paint surface is easy to lose gloss and the substrate is rusted, which affects the appearance and service life. Contents of the invention [0004] (1) Solved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D133/04C09D5/08
CPCC09D5/08C09D183/06C08L33/04
Inventor 谭红志张大志
Owner 河南东澳化工有限公司
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