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MXene-polyaniline composite material and preparation method thereof

A technology of composite materials and polyaniline, which is applied in the field of preparation of MXene composite materials, can solve the problems of poor microwave absorption performance of MXene, and achieve the effect of enhancing microwave absorption performance, excellent electrical properties, and expanding the attenuation path

Active Publication Date: 2017-05-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the technical problem of the existing two-dimensional transition metal carbide or carbonitride MXene with poor wave-absorbing performance, and provide a kind of MXene-polyaniline composite material and its preparation method

Method used

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  • MXene-polyaniline composite material and preparation method thereof
  • MXene-polyaniline composite material and preparation method thereof

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specific Embodiment approach 1

[0015] Embodiment 1: The MXene-polyaniline composite material of this embodiment is composed of a layered two-dimensional transition metal carbide and a polyaniline shell coated on the surface of the two-dimensional transition metal carbide, wherein the two-dimensional transition metal carbide The ratio of the mass of polyaniline or carbonitride to the mass of polyaniline is 1: (0.5-2.5).

specific Embodiment approach 2

[0016] Specific embodiment two: the preparation method of the MXene-polyaniline composite material described in specific embodiment one, carry out according to the following steps:

[0017] 1. Weigh two-dimensional transition metal carbide (MXene), aniline and ammonium persulfate [(NH 4 ) 2 S 2 o 8 ], wherein the ratio of the quality of two-dimensional transition metal carbide to the volume of aniline is 1g:(0.3~3)mL, the ratio of the quality of ammonium persulfate to the volume of aniline is (2.5~2.75)g:1ml;

[0018] 2. Add aniline to water, stir to obtain aniline / water dispersion, then use hydrochloric acid to adjust the pH value of the aniline / water dispersion to 1.5-2 to obtain aniline hydrochloride solution;

[0019] 3. Add the hydrochloride solution of aniline to the aqueous dispersion of the two-dimensional transition metal carbide, stir and mix at 0-5°C for 6-18 hours to obtain the MXene / aniline mixed solution;

[0020] 4. Dissolve ammonium persulfate in water, adj...

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the two-dimensional transition metal carbide described in step one is Ti 3 C 2 ; Others are the same as in the second embodiment.

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Abstract

The invention provides an MXene-polyaniline composite material and a preparation method thereof, relates to a preparation method of the MXene-polyaniline composite material and aims to solve the technical problem of poor wave absorbing performance of the conventional two-dimensional transition metal carbide MXene. The MXene-polyaniline composite material comprises laminated two-dimensional transition metal carbide and a polyaniline shell coating the surface of the two-dimensional transition metal carbide. The preparation method comprises the following steps: aniline is added to water and stirred, an aniline / water dispersion liquid is obtained, the pH value is regulated to 1.5-2, and a hydrochloride solution of aniline is obtained; the hydrochloride solution of aniline is added to the water dispersion liquid of the two-dimensional transition metal carbide and is stirred and mixed at a low temperature, and an MXene-aniline mixed solution is obtained; an ammonium persulfate solution is added dropwise to the MXene-aniline mixed solution, the mixture is subjected to a stirring reaction at a low temperature, a product is washed and dried, and the MXene-polyaniline composite material is obtained. The MXene-polyaniline composite material can be applied to the field of wave absorption.

Description

technical field [0001] The invention relates to a preparation method of MXene composite material. Background technique [0002] In 2011, Professor Yury Gogotsi and Professor MichelW.Barsoum of Drexel University in the United States jointly discovered a new type of two-dimensional transition metal carbide or carbonitride, due to its unique graphene-like The layered structure is named MXene. Its general chemical formula can be M n+1 x n T z Represents, where M refers to transition metals, X refers to C or / and N, n is generally 1 to 3, T z Refers to the surface group (such as OH - , F - Wait). It has the characteristics of high specific surface area and high conductivity of graphene, flexible and adjustable components, and controllable minimum nano-layer thickness. It has shown great potential in the fields of energy storage, adsorption, sensors, and conductive fillers. . Today, MXene is rarely used in the field of microwave absorption. Due to its excellent electrical ...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08K3/14C08L79/02C08L91/06C01B32/921
CPCC01P2004/03C08G73/0266C08L79/02C08L91/06C08K3/14
Inventor 姜再兴韦华伟董继东方元钱玥郑文慧黄玉东
Owner HARBIN INST OF TECH
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