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Vehicle color-changing film-forming material with same texture as original vehicle paint, and film-forming method and application thereof

A film-forming material and vehicle technology, applied in polyurea/polyurethane coatings, devices for coating liquids on surfaces, coatings, etc. problem, to restore brightness and smoothness, excellent peelability, excellent effect

Inactive Publication Date: 2020-05-19
量镀(上海)新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main methods for the preparation of the protective film at present, the two technical methods of the spray painting process and the traditional film sticking process. For the paint surface prepared by the spray painting process, it can be polished and waxed, and it is corrosion-resistant and yellowing-resistant. , there will be no steps if there are garlands, it has the characteristics of the original car paint, and the texture of the original car paint is relatively excellent, but the repainting process will destroy the original car paint, and the original car paint cannot be retained and cannot be replaced at any time The obvious disadvantage of the effect; for the film sticking process, the film can be peeled off at any time, and the characteristics of the original car paint will be retained, but for the film sticking, it cannot be polished and waxed, and the film sticks to the plastic texture and is not resistant to yellowing. Moreover, there will be obvious steps and superimposed textures when it comes to latte art, which will affect the appearance. In addition, there will be residual glue pain points when the film is peeled off, and the damage to the original car paint surface is different, so it cannot be truly protected.
The problem of chromatic aberration after partial damage cannot be solved. Therefore, in view of the pain points of existing industry technologies, it is necessary to study a car protective film with comprehensive and excellent performance or a method of film formation, so that the color change can return to the original car paint. Texture, to achieve the characteristics of both protection and aesthetics for the appearance of the car

Method used

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  • Vehicle color-changing film-forming material with same texture as original vehicle paint, and film-forming method and application thereof
  • Vehicle color-changing film-forming material with same texture as original vehicle paint, and film-forming method and application thereof
  • Vehicle color-changing film-forming material with same texture as original vehicle paint, and film-forming method and application thereof

Examples

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preparation example Construction

[0043] The preparation method of the first modified polyurethane described in the present invention is as follows:

[0044] (1) Put linear isocyanate, polyol, and catalyst dibutyltin dilaurate into four bottle mouths under the condition of nitrogen protection, and heat up after 1 hour of initial polymerization under the condition of 60°C; the linear The molar ratio of isocyanate and polyol is 1.1:1;

[0045] (2) After the temperature was raised to 80°C, dimethylolpropionic acid and a small molecule chain extender were added to carry out the chain extension reaction for 40 minutes, and then the temperature was lowered;

[0046] (3) After cooling down to 45°C, add triethylamine to neutralize until the pH is between 7-8, and add a small amount of acetone to reduce the viscosity; add deionized water to emulsify and disperse under high-speed stirring, and remove the acetone by distillation under reduced pressure. .

[0047] In some embodiments, the polyurethane dispersion is a ca...

Embodiment 1

[0122] A color-changing film-forming material for vehicles with the texture of the original car paint, the color-changing film-forming material for vehicles includes three layers from the inside to the outside, a peelable layer, an intermediate color layer, and a polishable protective layer; the peelable layer, The thickness ratio between the intermediate color layer and the polishable protective layer is 1:2:0.6;

[0123] In parts by weight, the components of the peelable layer include 30 parts of the first modified polyurethane, 21 parts of polyurethane dispersion, 50 parts of solvent, 0.3 part of defoamer, 0.08 part of leveling agent, 0.3 part of wetting agent ;

[0124] In parts by weight, the components of the intermediate color layer include 20 parts of the first modified water-based polyurethane, 30 parts of water-based aliphatic polyurethane, 3.5 parts of defoamer, 2 parts of leveling agent, 8 parts of water-based silver paste, 3 parts of Film-forming aids, 45 parts o...

Embodiment 2

[0137] A color-changing film-forming material for vehicles with the texture of the original car paint, the color-changing film-forming material for vehicles includes three layers from the inside to the outside, a peelable layer, an intermediate color layer, and a polishable protective layer; the peelable layer, The thickness ratio between the intermediate color layer and the polishable protective layer is 1:1.5:0.1;

[0138] In parts by weight, the components of the peelable layer include 20 parts of the first modified polyurethane, 10 parts of polyurethane dispersion, 40 parts of solvent, 0.1 part of defoamer, 0.05 part of leveling agent, and 0.1 part of wetting agent;

[0139] In parts by weight, the components of the intermediate color layer include, 10 parts of the first modified water-based polyurethane, 20 parts of water-based aliphatic polyurethane, 2 parts of defoamer, 1 part of leveling agent, 5 parts of water-based silver paste, 1 part of Film-forming aids, 30 parts ...

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Abstract

The invention relates to the field of preparation of paint films, and provides a vehicle color-changing film-forming material with the same texture as original vehicle paint. The vehicle color-changing film-forming material at least comprises three layers from inside to outside, namely a peelable layer, a middle color layer and a polishable protective layer, wherein the components of the peelablelayer comprise first modified polyurethane; the raw materials of the first modified polyurethane comprise linear isocyanate; and the polishable protective layer comprises at least one selected from the group consisting of second modified waterborne polyurethane and waterborne polyacrylic resin.

Description

technical field [0001] The invention relates to the field of paint film preparation, in particular to a car color-changing film-forming material with the texture of original car paint, a film-forming method and application thereof. Background technique [0002] With the rapid development of the automobile industry, there is a huge industry demand for peelable color change and personalized applications based on non-destructive original car paint. The strippable coating for cars is mainly used in the field of temporary protection and decoration of the car surface. It can be used to decorate and beautify the car body and car hub, and can also protect the original car paint for many years. If you want to replace it during use, just peel it off or superimpose the color. . There are two main methods for the preparation of the protective film at present, the two technical methods of the spray painting process and the traditional film sticking process. For the paint surface prepare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D175/04C09D175/08C09D133/00C09D5/20C08G18/66C08G18/67C08G18/48C08G18/34B05D1/02B05D1/38B05D7/26B05D3/00
CPCB05D1/02B05D3/002B05D7/26B05D7/584B05D7/586B05D2350/50C08G18/348C08G18/4825C08G18/6692C08G18/677C08L2205/02C09D5/20C09D175/04C09D175/14C08L75/08C08L75/14C08L33/00
Inventor 赖松生
Owner 量镀(上海)新材料科技股份有限公司
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