Graphene-containing lightweight anti-electromagnetic pollution composite material plate and preparation method

A composite material board and graphene technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve problems such as unsatisfactory microwave absorption, inability to form conductive networks, poor interface bonding, etc., to achieve Enhance interface scattering and polarization, increase interface bonding area, good damping effect

Inactive Publication Date: 2018-11-13
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the interface combination of graphene, inorganic ferrite wave absorbing agent and resin and other polymers in the prior art not only affects the mechanical properties of the composite material, but also has an important impact on its microwave absorption performance. The interface of the material is poorly combined, easy to agglomerate, and cannot form a good conductive network, so there is a problem that the microwave absorption effect is not ideal

Method used

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  • Graphene-containing lightweight anti-electromagnetic pollution composite material plate and preparation method
  • Graphene-containing lightweight anti-electromagnetic pollution composite material plate and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] a. Mix graphene and foaming agent uniformly, add it to the temperature-sensitive capsule material, and spray-dry to prepare graphene / foaming agent microcapsules coated with temperature-sensitive capsule material, namely microcapsule A;

[0035] b. Mix the nano ferrite and the foaming agent uniformly, add them to the temperature-sensitive capsule material, and spray-dry to prepare the temperature-sensitive capsule material-coated nano ferrite / foaming agent microcapsules, namely microcapsules B;

[0036] c. Mix sendust and foaming agent uniformly, add them to the temperature-sensitive capsule material, and spray-dry to prepare the temperature-sensitive capsule material-coated sendust / foaming agent microcapsules, namely microcapsule C;

[0037] d. Mix the microcapsule A with polyolefin and processing aids to prepare the first polyolefin composition, namely composition A;

[0038] e. Mix the microcapsule B with polyolefin and processing aids to prepare the first polyolefin composit...

Embodiment 2

[0044] a. Mix graphene and foaming agent uniformly, add it to the temperature-sensitive capsule material, and spray-dry to prepare graphene / foaming agent microcapsules coated with temperature-sensitive capsule material, namely microcapsule A;

[0045] b. Mix the nano ferrite and the foaming agent uniformly, add them to the temperature-sensitive capsule material, and spray-dry to prepare the temperature-sensitive capsule material-coated nano ferrite / foaming agent microcapsules, namely microcapsules B;

[0046] c. Mix sendust and foaming agent uniformly, add them to the temperature-sensitive capsule material, and spray-dry to prepare the temperature-sensitive capsule material-coated sendust / foaming agent microcapsules, namely microcapsule C;

[0047] d. Mix the microcapsule A with polyolefin and processing aids to prepare the first polyolefin composition, namely composition A;

[0048] e. Mix the microcapsule B with polyolefin and processing aids to prepare the first polyolefin composit...

Embodiment 3

[0054] a. Mix graphene and foaming agent uniformly, add it to the temperature-sensitive capsule material, and spray-dry to prepare graphene / foaming agent microcapsules coated with temperature-sensitive capsule material, namely microcapsule A;

[0055] b. Mix the nano ferrite and the foaming agent uniformly, add them to the temperature-sensitive capsule material, and spray-dry to prepare the temperature-sensitive capsule material-coated nano ferrite / foaming agent microcapsules, namely microcapsules B;

[0056] c. Mix sendust and foaming agent uniformly, add them to the temperature-sensitive capsule material, and spray-dry to prepare the temperature-sensitive capsule material-coated sendust / foaming agent microcapsules, namely microcapsule C;

[0057] d. Mix the microcapsule A with polyolefin and processing aids to prepare the first polyolefin composition, namely composition A;

[0058] e. Mix the microcapsule B with polyolefin and processing aids to prepare the first polyolefin composit...

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Abstract

The invention discloses a graphene-containing lightweight anti-electromagnetic pollution composite material plate and a preparation method thereof. The lightweight wave absorbing multi-layered composite plate is prepared through the following steps that a, graphene, nanosized ferrite, sendust and a foaming agent are mixed and added into a thermosensitive bag material and subjected to spray drying,and three kinds of microcapsules are obtained; b, the three kinds of microcapsules are mixed with polyolefin and a processing assistant, and three kinds of first polyolefin compositions are obtained;and c, the compositions are added into a three-layer co-extrusion machine, extrusion and overlaying are conducted, and the lightweight wave absorbing composite plate with the three-layer structure isprepared. The method has the following beneficial effects that the gas generated in the extrusion and foaming processes of each layer is subjected to secondary dispersion, so that a microwave absorbent is uniformly dispersed in a polymer, and the obtained lightweight composite plate with the three-layer structure has the excellent wave absorbing capability, and the outstanding damping propertiessuch as damping and wave absorbing.

Description

Technical field [0001] The invention relates to the field of composite boards, in particular to the preparation of light-weight wave-absorbing boards, in particular to a graphene-containing light-weight anti-electromagnetic pollution composite board and a preparation method thereof. Background technique [0002] With the development of modern science and technology, the impact of electromagnetic radiation on the environment is increasing. At the airport, the flight cannot take off due to electromagnetic wave interference, and it is delayed; at the hospital, mobile phones often interfere with the normal operation of various electronic diagnosis and treatment equipment. Therefore, the treatment of electromagnetic pollution and the search for a material that can withstand and weaken electromagnetic wave radiation-absorbing materials have become a major issue in materials science. Microwave absorbing materials are an important support for achieving the stealth of military targets an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08C08L23/00C08K9/10C08K3/04C08K3/22C08K3/08C08K3/02C08J9/32B29C47/06
CPCB32B27/32B32B5/18B32B27/065B32B27/08B32B27/18B32B2250/22B32B2250/242B32B2266/025B32B2307/212B32B2307/56C08J9/32C08J2203/22C08J2323/00C08K3/042C08K9/10C08K2003/023C08K2003/0812C08K2003/0856C08K2003/2265C08K2201/011
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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