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Composite wave-absorbing material and preparation method thereof

A composite microwave absorbing material and composite material technology are applied in the field of preparation of ternary multi-loss matching synergistic composite microwave absorbing materials, which can solve the problems of high density of composite materials, poor impedance matching characteristics, and poor absorption performance, and achieve strong Dielectric effect, improved impedance matching, reduced density effect

Pending Publication Date: 2022-01-11
XIAN TECHNOLOGICAL UNIV
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  • Description
  • Claims
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Problems solved by technology

[0004] The composite absorbing materials prepared in the literature have the following disadvantages: the prepared composite materials have high density, poor impedance matching characteristics, narrow absorption bandwidth and poor absorption performance, etc.

Method used

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  • Composite wave-absorbing material and preparation method thereof
  • Composite wave-absorbing material and preparation method thereof
  • Composite wave-absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. According to m 硫酸钠 :m 二水磷酸二氢钠 :m 六水三氯化铁 :m 去离子水 =1:1.11:68:11900, dissolve sodium sulfate, sodium dihydrogen phosphate dihydrate and ferric chloride hexahydrate in deionized water, stir ultrasonically for 30 minutes at room temperature, react at 200°C for 24 hours, and collect by magnetic washing As a result, iron oxide nanotubes were obtained.

[0024] 2. According to m 硅钨多金属氧酸盐 :m 六水硫酸镍 :m 去离子水 :m 氯化钾 =1:0.084:4.59:0.29, dissolve silicotungsten polyoxometalate and nickel sulfate hexahydrate in deionized water, react in a water bath at a constant temperature of 40°C for 15 minutes, then add potassium chloride, place in the refrigerator for 24 hours to crystallize, add water to weigh Crystallization to obtain silicon tungsten nickel polyoxometalate.

[0025] 3. According to m 氧化铁纳米管 :m 硅钨镍多金属氧酸盐 :m 1M盐酸 :m 苯胺 =1:3.8:356:0.99, the iron oxide nanotubes obtained in step (1) and the silicon-tungsten-nickel polyoxometalates obtained in step (2) are added to 1M...

Embodiment 2

[0030] 1. According to m 硫酸钠 :m 二水磷酸二氢钠 :m 六水三氯化铁 :m 去离子水 =1:1.14:68.7:11905, dissolve sodium sulfate, sodium dihydrogen phosphate dihydrate and ferric chloride hexahydrate in deionized water, stir ultrasonically at room temperature for 30 minutes, react at 200°C for 24 hours, and collect by magnetic washing As a result, iron oxide nanotubes were obtained.

[0031] 2. According to m 硅钨多金属氧酸盐 :m 六水硫酸镍 :m 去离子水 :m 氯化钾 =1:0.082:4.69:0.31, dissolve silicotungsten polyoxometalate and nickel sulfate hexahydrate in deionized water, react in a water bath at a constant temperature of 40°C for 15min, then add potassium chloride, place in the refrigerator for 24h to crystallize, add water to Crystallization to obtain silicon tungsten nickel polyoxometalate.

[0032] 3. According to m 氧化铁纳米管 :m 硅钨镍多金属氧酸盐 :m 1M盐酸 :m 苯胺 =1:3.75:355:1.02, adding the iron oxide nanotubes obtained in the step (1) and the silicon-tungsten-nickel polyoxometalates obtained in the step (2) to 1M hydrochlo...

Embodiment 3

[0036] 1. According to m 硫酸钠 :m 二水磷酸二氢钠 :m 六水三氯化铁 :m 去离子水 =1:1.19:69.2:12000, dissolve sodium sulfate, sodium dihydrogen phosphate dihydrate and ferric chloride hexahydrate in deionized water, stir ultrasonically for 30 minutes at room temperature, react at 200°C for 24 hours, and collect by magnetic washing As a result, iron oxide nanotubes were obtained.

[0037] 2. According to m 硅钨多金属氧酸盐 :m 六水硫酸镍 :m 去离子水 :m 氯化钾 =1:0.08:4.8:0.32, dissolve silicotungsten polyoxometalate and nickel sulfate hexahydrate in deionized water, react in a water bath at a constant temperature of 40°C for 15 minutes, then add potassium chloride, place in the refrigerator for 24 hours to crystallize, add water to weigh Crystallization to obtain silicon tungsten nickel polyoxometalate.

[0038] 3. According to m 氧化铁纳米管 :m 硅钨镍多金属氧酸盐 :m 1M盐酸 :m 苯胺 =1:3.68:353:1.03, adding the iron oxide nanotubes obtained in step (1) and the silicon-tungsten-nickel polyoxometalates obtained in step (2) to 1M h...

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Abstract

The invention relates to a composite wave-absorbing material and a preparation method thereof, in particular to an iron oxide nanotube@polyaniline / silicon tungsten nickel polyoxometallate composite wave-absorbing material prepared by adopting a hydrothermal-supramolecular self-assembly method. According to the prepared composite wave-absorbing material, on the basis of magnetic loss, conductive and dielectric materials are introduced, the impedance matching characteristic of the material is improved, the wave-absorbing performance of the material is enhanced, and the defects that an existing composite wave-absorbing material is large in density, poor in impedance matching characteristic, narrow in absorption bandwidth, poor in absorption performance and the like are overcome.

Description

technical field [0001] The invention relates to a preparation method of a ternary multi-loss matching synergistic composite microwave absorbing material, specifically preparing iron oxide nanotubes@polyaniline / silicon-tungsten-nickel polyoxometalate composite absorbing materials by using a hydrothermal-supramolecular self-assembly method wave material. Background technique [0002] Electromagnetic pollution not only greatly threatens the earth's environment and human health, but also interferes with the safe and stable operation of precision instruments. In addition, advanced reconnaissance and precision strike systems have posed a threat that cannot be ignored to weapons and equipment, and the improvement of radar reconnaissance technology also requires the development of new wave-absorbing materials. Therefore, the research on electromagnetic wave absorbing materials has become a very important scientific research work, which belongs to the key and hot issues of national ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00H05K9/00
CPCH01Q17/008H05K9/0081
Inventor 张娜张红梨陈璞真陈卫星王岩
Owner XIAN TECHNOLOGICAL UNIV
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