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Graphene modified molybdenum disulfide wave absorber and preparation method thereof

A graphene modification, molybdenum disulfide technology, applied in electrical components, magnetic field/electric field shielding and other directions, can solve problems such as low electrical conductivity, and achieve the effects of improved wave absorbing performance, low cost and simple process

Inactive Publication Date: 2018-09-21
南京恒新新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not an excellent absorbing material, mainly because its electrical conductivity is too low

Method used

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  • Graphene modified molybdenum disulfide wave absorber and preparation method thereof
  • Graphene modified molybdenum disulfide wave absorber and preparation method thereof
  • Graphene modified molybdenum disulfide wave absorber and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] The preparation method of graphene modified molybdenum disulfide wave absorbing agent sample 1 among the present invention, comprises the following steps:

[0023] A, disperse graphene oxide in water, prepare 0.5mg / mL graphene oxide aqueous solution (100mL). Then add thiourea (10mmol) and ammonium molybdate (10mmol), stir to dissolve, solvothermal reaction at 200°C for 12 hours, and obtain graphene-modified molybdenum disulfide black powder through processes such as filtration, water washing, and vacuum drying.

[0024] B, 0.9 gram of polyurethane is heated to melting, add the graphene-modified molybdenum disulfide (0.1 gram) prepared in step A and fully mix, cool to obtain graphene-modified molybdenum disulfide absorber, denote as sample 1. The mass fraction of graphene-modified molybdenum disulfide in sample 1 is 10%.

Embodiment 2

[0026] Change the concentration of the graphene oxide aqueous solution of step 1 in embodiment 1 to 2mg / mL, and other implementation conditions are the same as embodiment 1, obtain sample 2.

Embodiment 3

[0028] Change polyurethane into epoxy resin in step 2 in embodiment 1, and other implementation conditions are with embodiment 1, obtain sample 3.

[0029] figure 1 It is a scanning electron microscope image of the graphene-modified molybdenum disulfide in the present invention. It can be seen that the graphene-modified molybdenum disulfide presents a nano-sheet microscopically.

[0030] figure 2 In order to further determine the graphene-modified molybdenum disulfide nanosheet morphology for the transmission electron microscope image of the graphene-modified molybdenum disulfide.

[0031] image 3 For the powder X-ray diffraction pattern of the graphene-modified molybdenum disulfide in the invention, determine the crystal characteristics of the graphene-modified molybdenum disulfide.

[0032] Figure 4 In order to invent the X-ray photoelectron spectrum of graphene-modified molybdenum disulfide, determine the existence of carbon, sulfur and molybdenum elements in graphen...

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Abstract

The invention discloses a graphene modified molybdenum disulfide wave absorber and a preparation method thereof. The graphene modified molybdenum disulfide presents as nanosheets microscopically, andhas high-efficiency absorbing property. The invention further discloses a preparation method of the graphene modified molybdenum disulfide wave absorber. The preparation method is simple in process and low in cost, does not need complicated synthesis equipment, and can realize large-scale batch production.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave absorbing materials, in particular to a graphene-modified molybdenum disulfide wave absorbing agent and a preparation method thereof. Background technique [0002] With the rapid development of electronic information technology, the problems of electromagnetic radiation and electromagnetic interference faced by people in production and life are becoming more and more serious. The development of absorbing materials is one of the important ways to protect against electromagnetic radiation and electromagnetic interference. The absorbing material converts electromagnetic radiation into other non-radiative energy and dissipates it to avoid secondary pollution. Therefore, the development of new absorbing materials is of great significance in the military and civilian fields. [0003] In recent years, electromagnetic shielding materials have begun to shift to light weight, especially light...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L63/00C08K9/02C08K3/30H05K9/00
CPCC08K3/30C08K9/02C08K2003/3009H05K9/0081C08L75/04C08L63/00
Inventor 吴凡谢阿明
Owner 南京恒新新材料有限公司
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