A kind of high ultrasonic reflection unmanned automobile coating composition and its application

An unmanned vehicle and ultrasonic technology, applied in reflection/signal coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problem of weakening sound waves, phenolic resin sheets are difficult to fit, and cannot meet high-efficiency sound wave reflection and high reflection Problems such as low absorption, to achieve the effect of enhancing the reflection efficiency of sound waves and preventing uniform dispersion

Active Publication Date: 2021-08-03
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN107053801A discloses a three-layer sound insulation board design, the first layer is composed of polyethylene, polystyrene plastic, EPDM rubber, steel slag powder, etc. The ratio is 1:1:1, and the third layer is a phenolic resin sheet. The sound insulation board has a good sound insulation effect, but the phenolic resin sheet is difficult to fit on the car shell
CN105176248A discloses a sound-insulating coating with a damping structure, which uses acrylic esters and polyurethane as the matrix, and lamellar powders such as mica and graphene as fillers, and achieves good sound-insulating effects through the weak force between the filler and the matrix resin , but the sound insulation coating not only has the effect of sound wave reflection, but also weakens part of the reflected sound wave due to the existence of the damping layer
To sum up, the sound insulation materials provided by the prior art all have good sound insulation effects, but they cannot meet the goal of high reflection and low absorption to maximize the reflection efficiency that high-efficiency sound wave reflection should have.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An acoustic reflective coating structure for an unmanned vehicle in this embodiment is composed of a primer layer, a reflective layer and a topcoat layer in sequence, and the specific preparation process is as follows:

[0028] (1) primer layer

[0029] Preparation of primer layer:

[0030] Dissolve 70 parts of epoxy resin E-51 and 15 parts of polyamine curing agent p-xylylenediamine in the water phase in turn, add the thickener hydroxymethylcellulose until the viscosity is 20s, stir rapidly for 1 hour, and obtain a uniform dispersion glue. Spray the glue on the substrate, and when curing, firstly cure at 100°C for 1 hour, then apply a pressure of 0.5 MPa and raise the temperature to 160°C for 2 hours to obtain a primer layer.

[0031] (2) Reflective layer

[0032] Preparation of metal-coordinated COFs materials:

[0033] Weigh 14.1 mg (0.04 mmol) of 1,3,5-tris(4-aminophenyl)benzene and the corresponding 2',3'-dihydroxy-[1,1':4',1"-terphenyl] -20.5mg (0.06mmol) of ...

Embodiment 2

[0039] An acoustic reflective coating structure for an unmanned vehicle in this embodiment is composed of a primer layer, a reflective layer and a topcoat layer in sequence, and the specific preparation process is as follows:

[0040] (1) primer layer

[0041] Preparation of primer layer:

[0042] Dissolve 75 parts of epoxy resin E-51 and 20 parts of m-xylylenediamine curing agent in the water phase in turn, adjust the amount of thickener hydroxymethyl cellulose to a viscosity of 25 s, and stir rapidly for 1 hour to obtain a dispersed Uniform glue. Spray the glue on the substrate, and when curing, firstly cure at 100°C for 1 hour, then apply a pressure of 0.5 MPa and raise the temperature to 160°C for 2 hours to obtain a primer layer.

[0043] (2) Reflective layer

[0044] Preparation of metal-coordinated COF materials:

[0045] Weigh 14.1mg (0.04mmol) of 1,3,5-tris(4-aminophenyl)benzene and 10.0mg (0.06mmol) of the corresponding 2,3-dihydroxyterephthalaldehyde in a 10mL s...

Embodiment 3

[0051] An acoustic reflective coating structure for an unmanned vehicle in this embodiment is composed of a primer layer, a reflective layer and a topcoat layer in sequence, and the specific preparation process is as follows:

[0052] (1) primer layer

[0053] Preparation of primer layer:

[0054] Dissolve 75 parts of epoxy resin E-51 and 10 parts of m-xylylenediamine curing agent in the water phase in turn, adjust the amount of thickener hydroxymethyl cellulose to a viscosity of 25 s, and stir rapidly for 1 hour to obtain a dispersed Uniform glue. Spray the glue on the substrate, and when curing, firstly cure at 100°C for 2h, then apply a pressure of 0.5MPa and raise the temperature to 160°C for 2h to obtain a primer layer.

[0055] (2) Reflective layer

[0056] Preparation of metal-coordinated COF materials:

[0057] Weigh 14.1mg (0.04mmol) of 1,3,5-tris(4-aminophenyl)benzene and 12.7mg (0.06mmol) of the corresponding 2,2'-bipyridyl-5,5'-dicarbaldehyde monomer in Into a...

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PUM

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Abstract

The invention discloses a high-ultrasonic-reflecting unmanned vehicle coating composition and its application. Its viscosity is 20-25s, and it is composed of epoxy resin, polyurethane, polyaziridine, hydroxymethyl cellulose, and tungsten-coordinated COF materials. , p-xylylenediamine and water, wherein the tungsten-coordinated COF material is made of COF material and tungsten chloride, and the COF material is composed of 1,3,5-tris(4-aminophenyl)benzene and dialdehyde mono Made from raw materials inside the body. The present invention uses tungsten and other heavy metals with high acoustic impedance as filler particles, which can significantly enhance the acoustic wave reflection efficiency of the coating and achieve the purpose of preparing a high-reflection coating; by coordinating the heavy metal particles with the COF structure and then introducing the reflection layer, it is beneficial The uniform dispersion of heavy metal particles in the coating can effectively prevent the migration of heavy metal particles in the coating.

Description

technical field [0001] The invention belongs to the technical field of sound-insulating materials, and in particular relates to a high-ultrasonic-reflecting unmanned automobile coating composition and its application. Background technique [0002] Ultrasonic radar sensor is one of the auxiliary detection systems currently carried by driverless cars. Together with electromagnetic wave radar sensors, lidar sensors, and on-board video sensors, it constitutes the sense of smell and vision of driverless cars, allowing cars to sensitively perceive the surroundings. environment to make accurate judgments. Compared with other sensors, ultrasonic radar has the advantages of simple structure, low cost, high detection accuracy at close range, and good environmental tolerance. [0003] Sound insulation material is a kind of functional material with special properties. Its main feature is that it mainly hinders the propagation of sound waves to the greatest extent through reflection and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D175/04C09D179/04C09D5/33C08G83/00
CPCC08G83/008C08L2205/03C08L2205/035C09D5/004C09D163/00C08L87/00C08L79/04C08L1/284
Inventor 戴李宗鹿振武黄楚红袁丛辉曾碧榕陈国荣
Owner XIAMEN UNIV
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