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High-electromagnetic-wave-reflection unmanned automobile coating composition and application thereof

A technology of unmanned vehicles and electromagnetic waves, which is applied in the direction of reflection/signal coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc. It can solve the problems of high price, easy peeling of metal coating, and difficult processing, and improve compatibility , Enhance vehicle-mounted electromagnetic wave radar signal, good environmental resistance effect

Active Publication Date: 2021-01-15
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional radar reflective electromagnetic shielding materials are mostly prepared based on metal materials. Most of the materials are bulky, not resistant to corrosion, and difficult to process, while the metal coating has the disadvantages of easy falling off and high price.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An unmanned automobile electromagnetic shielding coating structure 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:

[0031] (1) primer layer

[0032] Preparation of primer layer:

[0033] Dissolve 70 parts of epoxy resin E-51 and 15 parts of polyamine curing agent m-xylylenediamine in the water phase in turn, adjust the amount of thickening agent hydroxymethyl cellulose to a viscosity of 20s, stir rapidly for 1 hour, Obtain a uniformly dispersed compound. 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.

[0034] (2) Reflective layer

[0035] Preparation of COFs-coated carbon fibers:

[0036] With 1.2mL of dioxane / trimethylbenzene / DMF ratio 4:1:1 as mixed solvent, add 10mg of aminated carbon fiber (purity above 95%, -NH 2 C...

Embodiment 2

[0042] An unmanned automobile electromagnetic shielding coating structure 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:

[0043] (1) primer layer

[0044] Preparation of primer layer:

[0045] Dissolve 75 parts of epoxy resin E-51 and 20 parts of polyamine curing agent m-xylylenediamine in the water phase in turn, adjust the amount of thickening agent hydroxymethyl cellulose to a viscosity of 25 seconds, and stir rapidly for 1 hour. Obtain a uniformly dispersed compound. 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.

[0046] (2) Reflective layer

[0047] COFs coated carbon fiber preparation:

[0048] With 1.2mL of dioxane / trimethylbenzene / DMF ratio 4:1:1 as mixed solvent, add 10mg of aminated carbon fiber (purity above 95%, -...

Embodiment 3

[0054] An unmanned automobile electromagnetic shielding coating structure 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:

[0055] (1) primer layer

[0056] Preparation of primer layer:

[0057] Dissolve 75 parts of epoxy resin E-51 and 15 parts of polyamine curing agent m-xylylenediamine in the water phase in turn, adjust the amount of thickening agent hydroxymethyl cellulose to a viscosity of 20s, stir rapidly for 1 hour, Obtain a uniformly dispersed compound. 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.

[0058] (2) Reflective layer

[0059] COFs coated carbon fiber preparation:

[0060] With 1.2mL of dioxane / trimethylbenzene / DMF ratio 4:1:1 as mixed solvent, add 10mg of aminated carbon fiber (purity above 95%, -NH 2 Conte...

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Abstract

The invention discloses a high electromagnetic wave reflection unmanned automobile coating composition and an application thereof, the viscosity is 20-25s, the high-electromagnetic-wave-reflection unmanned automobile coating composition is composed of epoxy resin, polyurethane, polyaziridine, hydroxymethyl cellulose, COFs coated carbon fiber, p-xylylenediamine and water, and the COFs coated carbonfiber is composed of aminated carbon fiber, a dialdehyde monomer, 1,3,5-tri(4-aminophenyl) benzene, TEMPO, n-diisopropylethylamine and CuI. The introduced COFs can effectively improve the compatibility of the carbon fiber and the matrix resin; the COFs coated carbon fiber containing stable free radicals TEMPO can provide free electrons, an induction field is generated under electromagnetic wave radiation, and then electromagnetic waves can be effectively reflected.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic shielding materials, and in particular relates to a high electromagnetic wave reflection unmanned automobile coating composition and its application. Background technique [0002] Electromagnetic wave radar detects by transmitting electromagnetic signals through the transmitter, and uses the receiver to receive the reflected signals to analyze the detection object's orientation, size, and running speed. In order to ensure the accuracy of the data, there must be enough reflected signals, so the strength of the transmitted signal Under certain circumstances, it is particularly important to improve the electromagnetic wave reflection efficiency of the detected object. [0003] With the continuous research of unmanned vehicle technology, it is found that the most important thing for an unmanned vehicle during driving is to be able to quickly and accurately grasp the surrounding environment, es...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D175/04C09D5/33C09D7/62C09D5/00
CPCC08K2201/003C08L2205/03C09D5/002C09D5/004C09D163/00C09D7/62C09D7/70C08L75/04C08K9/10C08K7/06C08L1/284C08L79/04
Inventor 戴李宗鹿振武黄楚红许一婷罗伟昂陈国荣
Owner XIAMEN UNIV
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