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Stannic oxide modified ferroferric oxide/multiwalled carbon nanotube network composite material

A technology of multi-wall carbon nanotubes and ferroferric oxide, which is applied in the field of composite materials, can solve the problems of reduced surface utilization, multi-wall carbon nanotubes have no magnetic loss, and cannot achieve microwave efficient absorption, etc., and achieve microwave absorption performance Improved effect

Active Publication Date: 2016-10-12
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems to be solved. Multi-walled carbon nanotubes do not have the ability of magnetic loss, and are easy to agglomerate, resulting in a decrease in surface utilization.
In addition, efficient absorption of microwaves cannot be achieved solely by its dielectric loss

Method used

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  • Stannic oxide modified ferroferric oxide/multiwalled carbon nanotube network composite material
  • Stannic oxide modified ferroferric oxide/multiwalled carbon nanotube network composite material
  • Stannic oxide modified ferroferric oxide/multiwalled carbon nanotube network composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Add 70mL ethylene glycol and 80mg acidified multi-walled carbon nanotubes (acidification conditions: concentrated nitric acid refluxed at 120°C for 6 hours) into the beaker, ultrasonically disperse for 2 hours, then add 1mmol Fe(NO 3 ) 3 9H 2 O, 2mmol NaAc 3H 2 O, stirred and dissolved, transferred to a reaction kettle at 200°C for 10 hours. The product was washed thoroughly with distilled water to neutralize its pH. The product was placed in a drying oven and dried at 60° C. for 8 hours to obtain a composite multi-walled carbon nanotube material of ferric oxide. Its TEM picture is as follows figure 1 shown. It can be seen from the figure that the diameter of the multi-walled carbon nanotubes is 40-60 nm, and the length is in the order of microns. The ferroferric oxide microspheres have a particle size of 180-200nm and are self-assembled by nanometer ferroferric oxide. The multi-walled carbon nanotubes connect ferric oxide microspheres to form a network.

[0030...

Embodiment 2

[0033] Fe(NO 3 ) 3 9H 2 The amount of O added is 2mmol, NaAc·3H 2 The amount of O added is 4mmol, SnCl 4 ·5H 2 O was added in an amount of 4 mmol. The rest is the same as in Example 1, and the tin dioxide-modified ferric oxide / multi-walled carbon nanotube network composite material is obtained.

Embodiment 3

[0035] The volume of ethylene glycol added to the beaker is 60mL. The rest is the same as in Example 1, and the tin dioxide-modified ferric oxide / multi-walled carbon nanotube network composite material is obtained.

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Abstract

The invention discloses a stannic oxide modified ferroferric oxide / multiwalled carbon nanotube network composite material, and a preparation method and application thereof. The preparation method comprises the steps that 1, a ferroferric oxide / multiwalled carbon nanotube is prepared, wherein the multiwalled carbon nanotube is acidized and mixed with ethanediol, ultrasonic dispersion is carried out, then, Fe(NO3)3.9H2O and NaAc.3H2O are added, a reaction is carried out at 200 DEG C for 10 h, aftertreatment is carried out, and the ferroferric oxide / multiwalled carbon nanotube is obtained; 2, stannic oxide modification is carried out, distilled water and SnC14.5H2O are added into the ferroferric oxide / multiwalled carbon nanotube, the mixture is sufficiently stirred to be dissolved, stronger ammonia water is dropwise added after complete dissolving, the pH is adjusted to be 10, a reaction is carried out in a reaction kettle at 160 DEG C for 18 h, and aftertrement is carried out, so that the stannic oxide modified ferroferric oxide / multiwalled carbon nanotube network composite material is obtained.

Description

technical field [0001] The invention relates to a composite material, in particular to a tin dioxide-modified ferric oxide / multi-wall carbon nanotube network composite material. It belongs to the technical field of electromagnetic wave absorption. Background technique [0002] At present, people's lives are full of various electronic products. While making full use of electromagnetic waves, there are also many problems such as electromagnetic interference and information leakage. Electromagnetic waves will not only affect the use of precision instruments, but also have adverse effects on human health. Therefore, the problem of electromagnetic pollution needs to be solved urgently. In addition, electromagnetic stealth technology in the military field has drawn more attention to electromagnetic wave absorbing materials. [0003] Absorbing materials refer to a class of materials that can absorb and attenuate incident electromagnetic waves, convert their electromagnetic energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00C01G49/08
CPCC01G49/08C01P2002/72C01P2004/04C01P2004/32C09K3/00
Inventor 邢宏龙王磊申子瑶刘振峰
Owner ANHUI UNIV OF SCI & TECH
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