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Water-based damping coating as well as preparation method and application thereof

A damping coating, water-based technology, applied in the field of damping coatings, can solve the problems of low sound absorption and noise reduction effect, damping factor, that is, the decline of shock absorption and noise reduction effect, etc., to achieve good sound absorption and noise reduction effect, good application potential, and good appearance Effects and Effects of Using Effects

Inactive Publication Date: 2020-08-11
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN109749552A discloses a water-based damping coating and its application in the automotive field. The water-based damping coating is made from raw materials mainly including the following components, wherein the mass percentage of each component based on the total mass of the raw materials is: Water-based acrylic emulsion 30-40%, TPU powder 10-20%, filler 20-50%, water-based dispersant 0.5-3.0%, water-based defoamer 0.2-1.0%, foaming agent 0.2-1.0%, thickener 0.2 -1.0%, this method can significantly broaden the damping temperature range, but the damping factor of the coating, that is, the effect of shock and noise reduction will be significantly reduced
[0004] CN109206983A discloses a water-based damping coating for automobiles, which consists of the following raw materials in parts by weight: 40-60 parts of water-based emulsion, 12-0 parts of plant fiber, 6-14 parts of graphite, 30-40 parts of calcium carbonate, dispersant 3-5 parts, 4-7 parts of defoamer, 18-26 parts of water, in the present invention, by adding plant fibers, thereby increasing the ductility of the entire water-based damping coating, but the structure of plant fibers determines that its sound absorption and noise reduction effect is relatively low. Low

Method used

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  • Water-based damping coating as well as preparation method and application thereof
  • Water-based damping coating as well as preparation method and application thereof
  • Water-based damping coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0060] This preparation example provides a kind of pure acrylic emulsion, the preparation method of described pure acrylic emulsion comprises the following steps: take 45 parts of deionized water and 30 parts of butyl acrylate (BA), 20 parts of methyl acrylate (MMA), 3 parts of acrylic acid (AA), 3 parts of nonylphenol polyoxyethylene ether (OP-10), 1.5 parts of sodium dodecyl sulfate (SDS), added to the emulsification container, stirred at room temperature, stirred evenly after 2 hours, and obtained a pre-emulsion . Then add 0.6 parts of sodium bicarbonate, heat to 50°C in a water bath, continue stirring for 1.5 hours, control the temperature at 50-55°C, and slowly add 0.6 parts of potassium persulfate dropwise to make a milky white mixture, cool to 40°C, adjust with ammonia water pH = 8 to 9, to prepare pure acrylic emulsion for use.

preparation example 2

[0062] This preparation example provides a kind of styrene-acrylic emulsion, the preparation method of described styrene-acrylic emulsion comprises the following steps: take 50 parts of deionized water and 15 parts of styrene (SA), 15 parts of butyl acrylate (BA), 5 parts of methyl Add methyl acrylate (MMA), 3 parts of acrylic acid (AA), 1.5 parts of nonylphenol polyoxyethylene ether (OP-10), 3 parts of sodium dodecyl sulfate (SDS), into the emulsification container, and stir at room temperature , Stir evenly after 1.5h to obtain a pre-emulsion. Then add 0.6 parts of sodium bicarbonate, heat it in a water bath to 75°C, continue to stir for 1h, and slowly add 0.6 parts of potassium persulfate dropwise, control the temperature at 75-80°C, and continue the reaction for 1h to make a homogeneous mixture, cool to 40°C, and use Ammonia water is used to adjust the pH to 8 to 9 to prepare a styrene-acrylic emulsion for use.

[0063] Wherein, the butyl acrylate (BA) used in Preparation...

Embodiment 1

[0066] The present embodiment provides a kind of water-based damping coating, and described water-based damping coating comprises the following components in parts by weight:

[0067]

[0068] The preparation method of water-based damping coating described in the present embodiment comprises the following steps:

[0069] (1) Mix and stir 35 parts of water-based emulsion (pure acrylic emulsion, styrene-butadiene emulsion, and styrene-acrylic emulsion with a mass ratio of 1:1:1) and 15 parts of deionized water, and the mixing speed is 900rpm / min , the time of mixing and stirring is 15min, and the aqueous emulsion dilution is obtained;

[0070] (2) Add 2 parts of dispersant (BYK-180), 0.4 parts of antifoaming agent (organic silicon defoaming agent) and 15 parts of basalt fiber to the aqueous emulsion diluent obtained in step (1), mix and stir The speed is 900rpm / min, the time of mixing and stirring is 15min, and the mixed solution A is obtained;

[0071] (3) Add 43 parts of ...

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Abstract

The invention provides a water-based damping coating as well as a preparation method and an application thereof. The water-based damping coating is prepared from the following components in parts by weight: 30 to 60 parts of water-based emulsion, 10 to 20 parts of basalt fiber, 30 to 60 parts of inorganic filler, 1 to 5 parts of dispersing agent, 0.3 to 1.5 parts of defoaming agent, 1 to 6 parts of rheological additive, 2 to 6 parts of flame retardant and 30 to 60 parts of water. According to the water-based damping coating, the basalt fiber fibers are added, so that the mechanical property, especially the ductility, of the water-based damping coating is enhanced, the damping coefficient is increased, the anti-cracking and anti-bubbling effects can be achieved in the actual application process, and a better appearance effect and a better use effect are obtained.

Description

technical field [0001] The invention belongs to the technical field of damping coatings, in particular to a water-based damping coating and its preparation method and application. Background technique [0002] With the continuous development and progress of the economy and society, automobiles have become an indispensable and important travel tool in people's lives. At present, healthy travel is advocated, and people are paying more and more attention to the impact of safe and environmentally friendly car interior space on their health. Therefore, all aspects of the car are striving to use safer and more environmentally friendly materials. Among them, the damping and shock absorbing materials for automobiles are also undergoing a transformation from asphalt boards to environmentally friendly asphalt boards and then to water-based damping coatings. In terms of water-based damping coatings, because it can reduce the cost of coatings and the danger caused by the presence of or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D125/14C09D109/08C09D7/61C09D7/80
CPCC08L2205/03C09D109/08C09D125/14C09D133/064C09D7/61C09D7/70C09D7/80C08L25/14C08L9/08C08K13/04C08K7/10C08L33/064
Inventor 杨天博于红刘思旸
Owner CHINA FIRST AUTOMOBILE
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