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Graphene-oxide-based foam wave-absorbing base material and preparation method thereof

A graphene-based, graphene-based technology, applied in the field of materials, can solve the problems of uneven density distribution of foam absorbing substrates, difficult dispersion of absorbing agents, poor mechanical properties, etc., achieve strong broadband microwave absorption performance, and improve mechanical properties. , the effect of uniform density distribution

Active Publication Date: 2018-12-28
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, because the added absorbing agent is not easy to disperse in the mixed liquid of the foam absorbing substrate, the prepared foam absorbing substrate has disadvantages such as uneven density distribution, narrow absorbing frequency band and poor mechanical properties.

Method used

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  • Graphene-oxide-based foam wave-absorbing base material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix 40 parts of methacrylonitrile, 40 parts of methacrylic acid, 0.1 part of N,N-dimethylformamide, 0.25 parts of azobisisobutyronitrile, 2 parts of acrylamide and 2 parts of n-butanol to form a mixed solution ; Add 1 part of graphene oxide to the mixed solution, homogeneously disperse through a high-speed homogenizer and ultrasonically disperse with a high-power ultrasonic cleaner, so that the graphene oxide is evenly dispersed to form a homogeneous mixed solution; then add 0.1 part of tackifying resin, Further perform homogeneous dispersion and ultrasonic dispersion to form a raw material liquid;

[0024] Then pour the raw material solution into a closed mold cavity consisting of two flat plates and sealing strips, place it in a water bath at 40°C for polymerization for 40 hours to obtain a copolymerized plate, and place the copolymerized plate at a temperature of 80°C for 12 hours to make the polymerization reaction fully ; Afterwards, preheat the copolymerized plate...

Embodiment 2

[0026] Mix 48 parts of methacrylonitrile, 42 parts of methacrylic acid, 0.2 parts of N,N-dimethylformamide, 0.5 parts of azobisisobutyronitrile, 4 parts of acrylamide and 3 parts of tert-butanol to form a mixed solution Add 2 parts of graphene oxide in the mixed solution, homogeneously disperse through a high-speed homogenizer and ultrasonically disperse with a high-power ultrasonic cleaner, so that the graphene oxide is evenly dispersed to form a homogeneous mixed solution; then add 0.3 parts of tackifying resin, Further perform homogeneous dispersion and ultrasonic dispersion to form a raw material liquid;

[0027] Then pour the raw material solution into a closed mold cavity consisting of two flat plates and sealing strips, place it in a water bath at 60°C for polymerization for 50 hours, and obtain a copolymerized plate, and place the copolymerized plate at a temperature of 100°C for 10 hours to make the polymerization reaction fully ; Afterwards, preheat the copolymerized...

Embodiment 3

[0029] 50 parts of methacrylonitrile, 50 parts of methacrylic acid, 0.2 parts of N,N-dimethylformamide, 0.5 parts of azobisisobutyronitrile, 6 parts of acrylamide and 4 parts of (n-butanol and tert-butanol) Mix to form a mixed solution; add 10 parts of graphene oxide to the mixed solution, and disperse homogeneously through a high-speed homogenizer and ultrasonically disperse with a high-power ultrasonic cleaner to uniformly disperse the graphene oxide to form a homogeneous mixed solution; then add 0.5 Parts of tackifying resin, further homogeneously dispersed and ultrasonically dispersed to form a raw material solution;

[0030] Then pour the raw material solution into a closed mold cavity consisting of two flat plates and sealing strips, place it in a water bath at 70°C for polymerization for 60 hours, and obtain a copolymerized plate, and place the copolymerized plate at a temperature of 120°C for 12 hours to make the polymerization reaction fully ; Afterwards, preheat the ...

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Abstract

The invention provides a graphene-oxide-based foam wave-absorbing base material and a preparation method thereof. The graphene-oxide-based foam wave-absorbing base material is prepared from 1-15 partsof graphene oxide, 40-58 parts of methacrylonitrile, 40-58 parts of methacrylic acid, 0.1-0.2 part of cosolvent, 0.25-0.5 part of initiating agent, 2-8 parts of crosslinking agent, 2-8 parts of foaming agent and 0.1-0.6 part of auxiliaries. The graphene-oxide-based foam wave-absorbing base material prepared according to the method has the advantages of uniform density distribution, broad wave absorbing band and high mechanical performance, has excellent broadband stability, and is suitable for manufacturing of radar antennas and the like.

Description

technical field [0001] The invention relates to the field of materials, more specifically, to a graphene oxide-based foam wave-absorbing substrate and a preparation method thereof. Background technique [0002] Graphene oxide is a derivative of graphene with a thickness of one atom, which has the characteristics of high electrical and thermal conductivity, low resistivity, large specific surface area, light weight, and high electron mobility. These properties of graphene oxide make graphene oxide attract much attention in the field of materials. [0003] At present, because the added absorbing agent is not easy to disperse in the mixed liquid of the foam absorbing substrate, the prepared foam absorbing substrate has disadvantages such as uneven density distribution, narrow absorbing frequency band and poor mechanical properties. Contents of the invention [0004] The present invention adopts graphene oxide with a unique structure, which has strong broadband microwave abso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/20C08L33/02C08L101/00C08K3/04C08F220/46C08F220/06C08F220/56C08J9/14
CPCC08F220/06C08F220/46C08J9/142C08L33/02C08L33/20C08J2203/182C08J2203/12C08J2333/02C08J2333/20C08L2203/14C08F220/56C08L101/00C08K3/04
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH