Walnut shell biomass c/fe 3 o 4 Preparation method of /cu microwave absorbing material

A microwave-absorbing material and biomass technology, applied in chemical instruments and methods, and other chemical processes, can solve problems such as low comprehensive utilization rate and complex structure, and achieve good microwave-absorbing performance, reasonable design, and good promotion and application value Effect

Active Publication Date: 2022-05-17
LULIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complex structure of lignocellulose and low comprehensive utilization rate, in order to improve its comprehensive utilization efficiency, it is one of the most effective ways to make it into biomass carbon materials

Method used

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  • Walnut shell biomass c/fe <sub>3</sub> o <sub>4</sub> Preparation method of /cu microwave absorbing material
  • Walnut shell biomass c/fe <sub>3</sub> o <sub>4</sub> Preparation method of /cu microwave absorbing material
  • Walnut shell biomass c/fe <sub>3</sub> o <sub>4</sub> Preparation method of /cu microwave absorbing material

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Embodiment Construction

[0021] Specific embodiments of the present invention will be described in detail below.

[0022] A kind of walnut shell biomass C / Fe 3 o 4 The preparation method of / Cu microwave absorbing material comprises the steps:

[0023] (1) The walnut shells are dried, crushed, and sieved to particles below 500 μm for later use.

[0024] (2), 2.59g FeCl 3 ·6H 2 O was dissolved in 200mL aqueous solution, fully stirred and dissolved to form a solution for later use.

[0025] (3) Add 1~10g of the walnut shell powder prepared in step (1) to the ferric chloride solution in step (2), stir and soak fully for about 0.5h, filter and dry to obtain walnut shell powder / FeCl 3 solid.

[0026] (4), 2.27g FeCl 2 4H 2 Add O and 0.5g copper powder to 100mL ethanol, add 0.05~0.5g sodium lauryl sulfate, carry out ultrasonic dispersion for 0.5~2h, after the dispersion is completed, add step (3) walnut shell powder / FeCl 3 Solid, fully stirred and soaked for about 0.5h, filtered and dried to obtain ...

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Abstract

The invention discloses a walnut shell biomass C / Fe 3 o 4 / Cu microwave absorbing material preparation method, including: (1), walnut shells are dried, crushed, and sieved below 500 μm for later use; (2), FeCl 3 ·6H 2 O is dissolved in the aqueous solution, fully stirred to dissolve, and the solution is formed for later use; (3), the walnut shell powder prepared in step (1) is added to the ferric chloride solution in step (2), fully stirred and soaked for 0.5h, filtered and dried, walnut shell powder / FeCl 3 solid; (4), the FeCl 2 4H 2 Add O and copper powder to ethanol, add sodium lauryl sulfate, and carry out ultrasonic dispersion for 0.5~2h. After the dispersion is completed, add step (3) walnut shell powder / FeCl 3 solid, fully stirred and soaked for 0.5h, filtered and dried to obtain walnut shell powder / FeCl 3 / FeCl 2 / copper powder solid. The invention is reasonable in design and has good popularization and application value.

Description

technical field [0001] The invention relates to the field of preparation of wave-absorbing materials, specifically a walnut shell biomass C / Fe 3 o 4 / Cu microwave absorbing material preparation method. Background technique [0002] With the continuous progress of modern science and technology, whether in the field of physics or chemistry, the application of microwave is becoming more and more extensive. Ideal microwave absorbing materials have the advantages of light weight, thinness, strong absorption, and wide absorption frequency band. According to the loss mechanism of the electromagnetic wave absorbing material, the absorbing material can be divided into two types: magnetic loss absorbing material and electric loss absorbing material. Magnetic loss absorbing materials include carbonyl iron, ferrite, ultrafine magnetic metal powder, TiO 2 , ZnO, SiC, etc., show the advantages of strong absorption and broadband, but are limited by their high density and poor high temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 秦永其王毅邓立强郭晨杨卫民
Owner LULIANG UNIV
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