相关实验视频

Updated: Jul 9, 2026

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments

Published on: May 11, 2017

高粉飞灰衍生微波吸收剂通过性激活和碳热降解增强了电磁波衰减

Imrana Salisu¹, Xiaohui Wang², Shuhua Ma²

¹CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, China; National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Waste management (New York, N.Y.)

|February 19, 2026

概括

这项研究开发了高粉飞 (HAFA) 的成本有效的微波吸收剂. 由此产生的复合材料具有出色的电磁波吸收特性,证明了工业废物的有效回收.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
废物管理废物管理

背景情况:

高含量飞灰 (HAFA) 是燃煤发电厂的固体废物.
开发具有成本效益的微波吸收剂对于各种应用至关重要.
像HAFA这样的工业废物的有效回收是环境和经济上的挑战.

研究的目的:

合成基于飞灰的复合材料,用于微波吸收.
为了回收高含量飞灰 (HAFA) 并降低吸收剂生产成本.
为了研究性激活对电磁性质的影响.

主要方法:

使用性激活和碳热还原合成的基于飞灰的复合材料.
多样化的性溶液度调整介电性质.
在1250°C下4小时烧结活化复合材料.

主要成果:

复合材料表现出可调节的介电常数和改进的电磁特性.
最低反射损失 (RLmin) 在FA200的7毫米时达到-54.91dB.
烧结复合材料S200在7.88 GHz实现了-58.82 dB的RLmin,并实现了高吸收效率 (~99.9999%).
观察到高达3.86GHz的有效吸收带宽 (EABmax).

结论:

开发的复合材料为高性能电磁波吸收提供了一个有希望的,低成本的解决方案.
性激活有效地提高了HAFA的微波吸收能力.
这种方法证明了HAFA的成功回收和利用,用于生产有价值的材料.

关键词:

性激活的激活方式碳热还原法碳热还原法介电性质介电性质电磁波吸收方式电磁波吸收方式高酸飞灰 (HAFA) 的使用阻抗匹配的匹配方式

更多相关视频

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Published on: May 19, 2019

相关概念视频

Pozzolans

Pozzolans

Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is a...