Structural damping material and carrier

Abstract

The invention discloses a structural damping material and a carrier, and the damping material comprises the following raw materials in parts by weight: 38-45 parts of acrylic resin emulsion; 0.3 to 1.2 parts of a coalescing agent; 1.5 to 2.8 parts of a leveling agent; 0.1 to 0.5 part of a silane coupling agent; 0.5-3 parts of a scratch-resistant auxiliary agent; 36-52 parts of a filler with a particle size of 5-20 [mu] m; and 0.5 to 10.5 parts of deionized water. The composite material has good scratch resistance and stone impact resistance, is applied to stone impact resistance protection and the like on main body structures of carriers such as automobiles, airplanes and the like, such as the bottoms of new energy battery boxes or automobile wheel cover chassis, can effectively meet the effects of noise reduction and impact wear resistance, is simple in composition, and can be quickly produced to realize large-scale popularization.

Description

Technical Field

[0001] The invention belongs to the technical field of coating materials, and in particular relates to a structural damping material and a carrier. Background Art

[0002] Damping coatings have achieved significant results in reducing noise in spacecraft shells, ships, aircraft shells, car shells, chassis, car interiors, engineering machinery operating rooms, generator and gas turbine shields, ship engine room sound insulation, building vibration reduction, and noise reduction. They have been widely used abroad. With the formulation of noise standards and environmental protection laws, the research and development of damping coatings will be further developed. With the development of social economy, noise pollution has gradually attracted people's attention and has become one of the three major pollutions in the world along with air pollution and water pollution. For example, our commonly used means of transportation - cars, also produce noise pollution. There are multiple vibration sources on cars. Long-term vibration and noise will cause serious harm, affect the comfort of drivers and passengers, and easily cause driver fatigue. Damping technology uses the viscoelasticity of polymer materials to convert vibration energy into heat energy for dissipation, thereby effectively reducing structural vibration and noise and achieving active control of car comfort. Damping materials can be used both inside and outside the vehicle. When used inside the vehicle, they can reduce the vibration and noise generated by the vehicle engine. When used outside the vehicle, such as the vehicle chassis and fenders, they can effectively absorb the energy generated by the impact of gravel and sand during driving, prevent damage and corrosion to the vehicle, and play a role in reducing vibration and noise. However, traditional chassis damping materials use a lot of raw materials such as asphalt, have a strong odor, are not environmentally friendly, have dark colors, poor appearance, and poor damping effect.

[0003] Therefore, in view of the above technical problems, it is necessary to provide a structural damping material and a carrier.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a structural damping material and a carrier.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0007] The structural damping material comprises the following raw materials, in parts by weight: 38-45 parts of acrylic resin emulsion; 0.3-1.2 parts of film-forming aid; 1.5-2.8 parts of leveling agent; 0.1-0.5 parts of silane coupling agent; 0.5-3 parts of anti-scratch aid; 36-52 parts of filler, with a particle size of 5-20 μm; and 0.5-10.5 parts of deionized water.

[0008] In one or more embodiments of the present invention, the acrylic resin emulsion is a mixture of rubber emulsion and acrylic resin.

[0009] In one or more embodiments of the present invention, the rubber latex is pure acrylic latex or styrene acrylic latex.

[0010] In one or more embodiments of the present invention, the content of acrylic resin in the acrylic resin emulsion is 40-50%.

[0011] In one or more embodiments of the present invention, the monomer of the acrylic resin is selected from 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, n-decyl (meth)acrylate, n-butyl (meth)acrylate, ethyl (meth)acrylate, isobutyl (meth)acrylate, propyl (meth)acrylate, lauryl (meth)acrylate, and 4-hydroxybutyl acrylate.

[0012] In one or more embodiments of the present invention, the acrylic resin is distributed in the acrylic resin emulsion in the form of particles, and the particle size of the particles is 2-100 μm.

[0013] In one or more embodiments of the present invention, the anti-scratch agent is a macromolecular silicone oil emulsion or a polyethylene wax emulsion.

[0014] In one or more embodiments of the present invention, the filler is one or both of calcium carbonate and mica powder.

[0015] In one or more embodiments of the present invention, the leveling agent is polyurethane.

[0016] In one or more embodiments of the present invention, the film-forming aid is alcohol ester dodecaned.

[0017] In one or more embodiments of the present invention, a vehicle includes a main structural member (such as a chassis, a shell, etc.) and a damping structure formed on the main structural member, and the damping structure includes at least a layer structure formed by the damping material of any main structural member according to claims 1-9.

[0018] Compared with the prior art, the structural damping material and carrier of the present invention have good scratch resistance and stone impact resistance, and are applied to the main structures of vehicles such as automobiles and airplanes, such as the bottom of new energy battery boxes or the anti-stone impact protection of automobile wheel cover chassis, etc., which can effectively meet the effects of noise reduction and impact and wear protection, and the simple composition can be promoted on a large scale through rapid production. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] Example 1

[0021] The damping material of this embodiment has the following raw materials in parts by weight: acrylic resin emulsion: 38, the acrylic resin emulsion is a styrene-acrylic emulsion mixture, wherein the (meth) acrylate resin particles are 40%; deionized water: 0.5; film-forming aid alcohol ester twelve: 0.7; leveling agent polyurethane: 1.5; silane coupling agent: 0.2; anti-scratch aid macromolecular silicone oil emulsion: 0.5; calcium carbonate powder with a particle size of 15μm: 50; the acrylic resin emulsion and the film-forming aid are placed in a stirring container, the stirrer is turned on, the speed is adjusted to 500rpm and stirred for 5 minutes; the calcium carbonate powder with a particle size of 15μm is added to the stirring container, the stirrer is turned on, the speed is adjusted to 1000rpm and stirred for 10 minutes; the remaining raw materials are added to the stirring container in turn, and the damping coating is prepared by stirring at 1000rpm for 5 minutes.

[0022] Example 2

[0023] The damping material of this embodiment has the following components in parts by weight: acrylic resin emulsion: 45, a mixture of styrene-acrylic emulsion in acrylic resin emulsion, wherein the (meth) acrylate resin particles account for 45%; deionized water: 10; film-forming aid alcohol ester twelve: 0.3; leveling agent polyurethane: 2; silane coupling agent: 0.1; anti-scratch aid polyethylene emulsion: 1; calcium carbonate powder with a particle size of 5 μm: 36; the acrylic resin emulsion and the film-forming aid are placed in a stirring container, the stirrer is turned on, the speed is adjusted to 500 rpm and stirred for 5 minutes; the calcium carbonate powder with a particle size of 5 μm is added to the stirring container, the stirrer is turned on, the speed is adjusted to 1000 rpm and stirred for 10 minutes; the remaining raw materials are added to the stirring container in sequence, and the damping coating is prepared by stirring at 1000 rpm for 5 minutes.

[0024] Example 3

[0025] The damping material of this embodiment has the following raw materials in parts by weight: acrylic resin emulsion: 42, a mixture of styrene-acrylic emulsion in acrylic resin emulsion, wherein (meth) octyl acrylate resin particles account for 50%; deionized water: 10.5; film-forming aid alcohol ester twelve: 1.2; leveling agent polyurethane: 2.8; silane coupling agent: 0.5; anti-scratch aid polyethylene emulsion: 3; calcium carbonate powder with a particle size of 20μm: 52; the acrylic resin emulsion and the film-forming aid are placed in a stirring container, the stirrer is turned on, the speed is adjusted to 500rpm and stirred for 5 minutes; the calcium carbonate powder with a particle size of 20μm is added to the stirring container, the stirrer is turned on, the speed is adjusted to 1000rpm and stirred for 10 minutes; the remaining raw materials are added to the stirring container in sequence, and the damping coating is prepared by stirring at 1000rpm for 5 minutes.

[0026]

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A structural damping material, the raw material composition of which includes, by weight, the following components: 38-45 parts of acrylic resin emulsion; 0.3-1.2 parts of film-forming aid; 1.5-2.8 parts of leveling agent; 0.1-0.5 parts of silane coupling agent; 0.5-3 parts of anti-scratch aid; 36-52 parts of filler, the particle size of which is 5-20 μm; and 0.5-10.5 parts of deionized water.

2. The structural damping material according to claim 1, characterized in that: The acrylic resin emulsion is a mixture of rubber emulsion and acrylic resin.

3. The structural damping material according to claim 2, characterized in that: The rubber latex is pure acrylic latex or styrene acrylic latex.

4. The structural damping material according to claim 2, characterized in that: The content of acrylic resin in the acrylic resin emulsion is 40-50%.

5. The structural damping material according to any one of claims 2 to 4, characterized in that: The monomer of the acrylic resin is selected from 2-ethylhexyl (meth)acrylate, n-octyl (meth)acrylate, n-decyl (meth)acrylate, n-butyl (meth)acrylate, ethyl (meth)acrylate, isobutyl (meth)acrylate, propyl (meth)acrylate, lauryl (meth)acrylate, and 4-hydroxybutyl acrylate.

6. The structural damping material according to claim 5, characterized in that: The acrylic resin is distributed in the acrylic resin emulsion in the form of particles, and the particle size of the particles is 2-100 μm.

7. The structural damping material according to claim 1, characterized in that: The anti-scratch auxiliary agent is a macromolecular silicone oil emulsion or a polyethylene wax emulsion.

8. The structural damping material according to claim 1, characterized in that: The filler is one of calcium carbonate and mica powder.

9. The structural damping material according to claim 1, characterized in that: The leveling agent is polyurethane.

10. A vehicle, comprising a main structural member and a damping structure formed on the main structural member, wherein the damping structure at least comprises a layer structure formed by the main structural member damping material according to any one of claims 1-9.

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