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A continuous synthesis method of graphene/ferrite nanocomposites

A technology of nanocomposite materials and synthesis method, which is applied in the field of continuous synthesis of graphene/ferrite nanocomposite materials, can solve the problems of continuous and rapid synthesis without breakthrough, and achieves light weight, low synthesis temperature and good wave absorption. performance effect

Inactive Publication Date: 2018-01-12
李同乐 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Still no breakthrough in low-cost, continuous and rapid synthesis

Method used

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  • A continuous synthesis method of graphene/ferrite nanocomposites
  • A continuous synthesis method of graphene/ferrite nanocomposites
  • A continuous synthesis method of graphene/ferrite nanocomposites

Examples

Experimental program
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Embodiment 1

[0027] combine image 3 , a continuous synthesis method of graphene / ferrite nanocomposite material, comprises the steps:

[0028] Step 1, weighing 20g of graphene according to the stoichiometric ratio and dispersing it in 1000ml of deionized water, then adding 16.5g of sodium hydroxide to the solution, at this time the pH value of the solution was greater than 11, stirred and ultrasonically oscillated to obtain a graphene solution;

[0029] Step 2, take 200ml of the graphene solution of step 1 and add it to the heating stirrer, the reaction temperature is 60°C, under electric stirring, add 50ml of the mixed solution of ferrous sulfate and ferric chloride to the solution at a speed of 50ml / min, and keep warm for 5 Minutes, wherein, the concentration of ferrous sulfate is 0.4mol / L, and the concentration of ferric chloride is 0.4mol / L;

[0030] Step 3, pump the reaction solution in step 2 into the container with NdFeB magnets at the bottom, let it stand for 1 minute, tilt the co...

Embodiment 2

[0036] combine image 3 , a continuous synthesis method of graphene / ferrite nanocomposite material, comprises the steps:

[0037] Step 1, weighing 20g of graphene according to the stoichiometric ratio and dispersing it in 1000ml of deionized water, then adding 16.5g of sodium hydroxide to the solution, at this time the pH value of the solution was greater than 11, stirred and ultrasonically oscillated to obtain a graphene solution;

[0038] Step 2, take 200ml of the graphene solution of step 1 and add it to the heating agitator, the reaction temperature is 95°C, under electric stirring, add 50ml of ferrous sulfate, ferric chloride, zinc nitrate and chloride to the solution at a speed of 50ml / min The mixed solution of nickel is kept warm for 5 minutes, wherein the concentration of ferrous sulfate is 0.3mol / L, the concentration of ferric chloride is 0.3mol / L, the concentration of zinc nitrate is 0.15mol / L, and the concentration of nickel chloride is 0.15mol / L. mol / L; adding the...

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Abstract

The invention discloses a continuous synthesis method of a graphene / ferrite nanocomposite. According to the synthesis method, the graphene / ferrite nanocomposite is prepared by taking graphene, sodium hydroxide aqueous solution and ferric salt solution or ferric salt solution doped with nickel salt and zinc salt and adopting a reverse co-precipitation method. By adopting the synthesis method, continuous synthesis of the nanocomposite is realized by continuous material injection and continuous magnetic separation and output of products, obtained ferrite and graphene are mixed evenly and are combined firmly, and an excellent absorbing property is achieved. Therefore the synthesis method has the advantages of continuous synthesis capability, low synthesis temperature, low energy consumption, low cost and quantity production capability, and has better application prospect.

Description

technical field [0001] The invention relates to a continuous synthesis method of a graphene / ferrite nanocomposite material, belonging to the field of wave-absorbing materials. Background technique [0002] The electromagnetic radiation of electronic and electrical equipment not only causes electromagnetic pollution to the environment, but also brings problems of electromagnetic interference and electromagnetic compatibility. At present, EMC-related market access certifications have been established in various regions of the world, such as FCC and NEBC certification in North America, CE certification in the European Union and 3C certification in China. Absorbing materials can strongly absorb electromagnetic radiation. Its application is to prevent electromagnetic pollution, realize radar stealth and electromagnetic compatibility, and reduce electromagnetic interference of various components in equipment. It has broad prospects and far-reaching significance. [0003] The abs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00
Inventor 李同乐洪昆权姜浩
Owner 李同乐
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