Preparation method of sandwich flexible electromagnetic shielding material based on carbon fiber fabric, nickel nanoparticles and graphene

A technology of electromagnetic shielding materials and carbon fiber fabrics, which is applied in shielding materials, carbon fibers, magnetic field/electric field shielding, etc., can solve the problem of difficulty in improving shielding performance, difficulty in accurately controlling the distribution of active components and constructing a specific micro-morphology, affecting composite materials. Flexibility and other issues, to achieve excellent conductivity and promote synergistic effects

Active Publication Date: 2019-09-20
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0003] The present invention aims to solve the problem that the traditional preparation method of "mixing-molding" for electromagnetic shielding composite materials affects the flexibility of composite materials, and involves some non-environmentally friendly chemical reagents, and it is difficult to accurately control the distribution of active components and construct a specific Microscopic morphology, which in turn leads to the problem that the shielding performance is difficult to improve, and a method for preparing a sandwich-type flexible electromagnetic shielding material based on carbon fiber fabrics, metal nickel nanoparticles and graphene is provided

Method used

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  • Preparation method of sandwich flexible electromagnetic shielding material based on carbon fiber fabric, nickel nanoparticles and graphene
  • Preparation method of sandwich flexible electromagnetic shielding material based on carbon fiber fabric, nickel nanoparticles and graphene
  • Preparation method of sandwich flexible electromagnetic shielding material based on carbon fiber fabric, nickel nanoparticles and graphene

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specific Embodiment approach 1

[0029] Specific embodiment one: present embodiment is a kind of preparation method based on the interlayer type flexible electromagnetic shielding material of carbon fiber fabric, metal nickel nanoparticle and graphene, and it is carried out according to the following steps:

[0030] 1. Preparation of carbon fiber fabric:

[0031] Put the container containing the biomass fiber fabric in the high-temperature pyrolysis device, pass inert gas into the high-temperature pyrolysis device for 1min~60min, under the protection of the inert gas, increase the temperature at a rate of 0.1℃ / min~10℃ / min, raise the temperature of the high-temperature pyrolysis device to 200°C-2000°C, and keep it warm for 0.1h-10h at a temperature of 200°C-2000°C, and then lower the temperature at a rate of 0.1°C / min-10°C / min , reducing the temperature of the high-temperature pyrolysis device from 200°C to 2000°C to room temperature to obtain carbon fiber fabrics;

[0032] 2. Preparation of metal nickel nan...

specific Embodiment approach 2

[0045] Embodiment 2: This embodiment differs from Embodiment 1 in that the biomass fiber fabric described in step 1 is bamboo fiber fabric, cotton fiber fabric, hemp fiber fabric or regenerated spun fiber fabric. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0046] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the purity of the nickel target in Step 2 is 90.00%-99.99%. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a sandwich flexible electromagnetic shielding material based on carbon fiber fabric, nickel nanoparticles and graphene and relates to the preparation method of the electromagnetic shielding materials, aiming to solve problems that a traditional preparation method for 'mixing-molding' existing electromagnetic shielding composites affects the flexibility of the composites and involves some non-environmental protection chemical reagents, and distribution of active components and specific microscopic morphology in construction are difficult to control accurately resulting in that the shielding performance is difficult to improve. The preparation method includes 1, preparation of the carbon fiber fabric; 2), preparation of the nickel nanoparticles/carbon fiber fabric composites by magnetron sputter; 3), plasma enhanced chemical vapor deposition. The preparation method is used for preparation of the electromagnetic shielding materials.

Description

technical field [0001] The invention relates to a preparation method of an electromagnetic shielding material. Background technique [0002] In recent years, the widespread use of radio frequency equipment in communication, medical and many other fields has produced large-scale electromagnetic pollution, which not only interferes with the normal operation of precision equipment, but also poses a huge threat to human health. Therefore, the development of environmentally friendly, lightweight, and high-performance new electromagnetic shielding materials has significant research significance. The active components of electromagnetic shielding materials can be roughly divided into three categories, namely magnetic materials (such as carbonyl iron, iron oxide, etc.), dielectric materials (such as: carbon materials, etc.) and conductive polymers (such as: polypyrrole, poly aniline, etc.). So far, carbon materials have been widely used in the field of electromagnetic shielding du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M11/74H05K9/00D06M101/40
CPCD06M11/74D06M11/83D06M2101/40H05K9/009
Inventor 万才超焦月吴义强李坚
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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