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Preparation method of chitosan titanium compound composite magnetic graphene

A titanium compound, composite magnetic technology, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problems of poor wave absorption and energy absorption, narrow absorption frequency band, etc., to achieve the effect of ensuring stability, durability, and excellent structural stability

Inactive Publication Date: 2021-10-08
内蒙古元瓷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention will solve the problem of poor wave absorption and energy absorption of existing single magnetic graphene and narrow effective absorption frequency band, and provide a preparation method of chitosan titanium compound composite magnetic graphene

Method used

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  • Preparation method of chitosan titanium compound composite magnetic graphene
  • Preparation method of chitosan titanium compound composite magnetic graphene
  • Preparation method of chitosan titanium compound composite magnetic graphene

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Experimental program
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specific Embodiment approach 1

[0022] Specific embodiment one: present embodiment a kind of preparation method of chitosan titanium compound composite magnetic graphene, it is to carry out according to the following steps:

[0023] 1. Stir and mix the lithium salt powder and acidic solvent evenly to obtain a reaction solution. Under stirring conditions, add the titanium compound powder into the reaction solution, and stir for 24h to 48h at an oil bath temperature of 35°C to 40°C. , to obtain a dark red liquid;

[0024] The mass ratio of the lithium salt powder to the acidic solvent is 1g:(10-50)mL; the mass ratio of the lithium salt powder to the titanium compound powder is 1:(1-5);

[0025] 2. ①, disperse the dark red liquid by ultrasonic vibration for 0.5h-1h; ②, add solvent and centrifuge and take the supernatant; ③, repeat step 2② 5 times to 10 times, until the pH value of the supernatant reaches 6-6.5, and obtain light red liquid;

[0026] 3. Add ethanol and centrifuge the light red liquid for 10 to ...

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the lithium salt powder described in step one is lithium nitrate powder, lithium fluoride powder, lithium oxide powder or lithium carbonate powder; The acidic solvent is analytical grade glacial acetic acid or analytical grade propionic acid; the titanium compound powder described in step 1 is titanium dioxide powder, titanium tetrachloride powder or barium metatitanate powder. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the solvent described in Step 2 ② is deionized water, ethanol or acetone. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of chitosan titanium compound composite magnetic graphene, and relates to a preparation method of magnetic graphene. The invention aims to solve the problems of poor wave and energy absorption and narrow effective absorption frequency band of the existing single magnetic graphene. The preparation method comprises the steps of 1, mixing lithium salt powder, an acidic solvent and titanium compound powder to obtain dark red liquid; 2, adding a solvent, centrifuging, and taking supernatant liquid to obtain light red liquid; 3, adding ethanol and centrifuging to obtain dark green supernate containing titanium compound nanosheets; 4, adding the dark green supernatant containing the titanium compound nanosheets into a strong acid solution to obtain a green suspension; 5, adding chitosan, graphene and a magnetic element covalent compound into the green suspension to obtain a mixed solution; and 6, collecting, washing and drying. The method is used for preparing the chitosan titanium compound composite magnetic graphene.

Description

technical field [0001] The invention relates to a preparation method of magnetic graphene. Background technique [0002] With the continuous development of electronic technology, the hazards of electromagnetic radiation are becoming more and more obvious. Electromagnetic wave radiation not only affects the normal operation of electronic devices, produces environmental pollution, but also causes certain harm to human health. Electromagnetic wave absorbing materials (absorbing materials) can effectively absorb electromagnetic energy and convert it into heat energy for consumption, thus making it widely used in military or civilian applications. Graphene has the characteristics of large specific surface area, low density, good electrical conductivity, high temperature resistance and strong oxidation resistance, so it can be used as a wave-absorbing material. However, studies have found that when magnetic graphene is used alone as a wave-absorbing material, due to the mismatch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08K3/04H05K9/00
CPCC08K3/042H05K9/0081C08K2201/01C08L5/08
Inventor 王志江陈诚李双军
Owner 内蒙古元瓷新材料科技有限公司
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