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Microwave absorbent and preparation method thereof

A microwave absorbent and solvent technology, applied in the field of microwave absorbent and its preparation, can solve the problems affecting soil remediation and use, poor stability of microwave absorbent, etc. The effect of specific surface area

Active Publication Date: 2020-07-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor stability of existing microwave absorbers and affecting soil remediation and use, the present invention provides a microwave absorber and a preparation method thereof

Method used

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  • Microwave absorbent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] The invention provides a microwave absorber, which comprises the following components in parts by weight: attapulgite: 40 parts, nano titanium dioxide: 15 parts, ferrite: 25 parts, Fe 3 (CO) 12 : 20 parts, ethanol: 60 parts, α-ketoglutarate: 12 parts, Co(CO) 3 H: 8 parts and Sb 2 o 3 : 8 servings.

[0032] The preparation method of above-mentioned microwave absorber, comprises the following steps:

[0033] Step a, weighing each component according to the above-mentioned raw material ratio;

[0034] Step b, the attapulgite, nano-titanium dioxide, ferrite, α-ketoglutaric acid, Co(CO) 3 H and Sb 2 o 3 Mix well, and then mix the obtained mixture with Fe 3 (CO) 12 Add to ethanol and soak for 8h, filter, and the solid material filtered out is the pretreatment material;

[0035] Step c. Cool the pretreated material at 100° C. for 3 hours at a rate of 10° C. / h to 20° C. and let it stand for 9 hours to obtain the microwave absorber.

Embodiment 2

[0037] The invention provides a microwave absorber, which comprises the following components in parts by weight: attapulgite: 35 parts, nano-titanium dioxide: 10 parts, ferrite: 20 parts, Fe 3 (CO) 12 : 15 parts, ethanol: 65 parts, α-ketoglutarate: 13 parts, Co(CO) 3 H: 10 parts and Sb 2 o 3 : 10 servings.

[0038] The preparation method of above-mentioned microwave absorber, comprises the following steps:

[0039] Step a, weighing each component according to the above-mentioned raw material ratio;

[0040] Step b, the attapulgite, nano-titanium dioxide, ferrite, α-ketoglutaric acid, Co(CO) 3 H and Sb 2 o 3 Mix well, and then mix the obtained mixture with Fe 3 (CO) 12 Add to ethanol and soak for 5h, filter, and the solid material filtered out is the pretreatment material;

[0041] Step c. Cool the pretreated material at 90° C. for 4 hours to 21° C. at a rate of 14° C. / h, and let it stand for 8 hours to obtain the microwave absorber.

Embodiment 3

[0043] The invention provides a microwave absorber, which comprises the following components in parts by weight: attapulgite: 45 parts, nano-titanium dioxide: 17 parts, ferrite: 30 parts, Fe 3 (CO) 12 : 26 parts, ethanol: 55 parts, α-ketoglutarate: 10 parts, Co(CO) 3 H: 7 parts and Sb 2 o 3 : 7 servings.

[0044] The preparation method of above-mentioned microwave absorber, comprises the following steps:

[0045] Step a, weighing each component according to the above-mentioned raw material ratio;

[0046]Step b, the attapulgite, nano-titanium dioxide, ferrite, α-ketoglutaric acid, Co(CO) 3 H and Sb 2 o 3 Mix well, and then mix the obtained mixture with Fe 3 (CO) 12 Add to ethanol and soak for 10h, filter, and the solid material filtered out is the pretreatment material;

[0047] Step c. Cool the pretreated material at 110° C. for 2 hours at a rate of 12° C. / h to 22° C. and let it stand for 8 hours to obtain the microwave absorber.

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Abstract

The invention relates to the technical field of microwave soil remediation, and particularly discloses a microwave absorbent and a preparation method thereof. The microwave absorbent is prepared from,by weight, 35 to 45 parts of attapulgite, 10 to 17 parts of nanometer titanium dioxide, 20 to 30 parts of ferrite, 15 to 26 parts of Fe3 (CO)12, 55 to 65 parts of a solvent, 10 to 13 parts of a blender and 14 to 20 parts of a flame retardant. The microwave absorbent prepared in the invention has the advantages of strong wave-absorbing ability, wide wave-absorbing frequency band, large specific surface area and stable performances, and the maximum reflection loss reaches-39.3 dB within the frequency band of 2-18 GHz, i.e., the loss rate is as high as 99.99% or above.

Description

technical field [0001] The invention relates to the technical field of microwave soil restoration, in particular to a microwave absorber and a preparation method thereof. Background technique [0002] In recent years, with the adjustment of my country's industrial layout and the relocation of urban construction enterprises, many chemical plants, electroplating plants, steel plants, substations and other enterprises have left a large number of heavily polluted sites with high concentrations of organic matter after relocation, endangering human settlements and surrounding ecology. Safety has become a soil environmental problem that needs to be solved urgently. [0003] The soil remediation methods for organic matter mainly include physical methods, chemical methods and biological methods. At present, the widely used method is microwave soil thermal remediation technology, which relies on microwaves to penetrate into the soil, so that all parts of the soil can obtain heat at the...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/00B09C1/06B09C1/08
CPCB09C1/00B09C1/06B09C1/08C09K17/40
Inventor 徐珺刘松涛陈传敏高冰郁金星车凯代天睿周文博宫云茜
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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