煤的废副产物飞灰在屏蔽中的应用

Q3 Materials Science

Journal of Water and Environmental Nanotechnology Pub Date : 2022-01-11 DOI:10.13074/jent.2013.02.nciset313

Monika Mishra, Avanish Pratap Singh, S.K. Dhawan

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引用次数: 0

摘要

具有导电、磁性和介电填料的基体，由于其独特的衰减和电学性能，在电磁干扰屏蔽中显示出潜在的应用前景。然而，微波反射的困难还有待克服。近年来，人们发现脱屑石墨与氧化铁和粉煤灰是一种更好的替代传统屏蔽材料。复合材料的电导率在0.013“14.57 S/cm范围内。研究了复合材料在8.2-12.4 GHz (X”波段)频率范围内的微波吸收性能，表明屏蔽效能高达59.83 dB，屏蔽效能与EG基体中粉煤灰和γ-Fe2O3的介电损耗和质量分数密切相关。

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Utilization of Fly Ash - A Waste Byproduct of Coal for Shielding Application

A matrix having conducting, magnetic and dielectric filler, due to their unique attenuation and electrical properties have shown their potential application in electromagnetic interference (EMI) shielding. However, the difficulties of reflection of microwave are yet to be overcome. Recently, exfoliated graphite along with iron oxide and fly ash found to a better alternate to the conventional shielding materials. Conductivity of composites lies in the range 0.013"14.57 S/cm. The microwave absorption properties of the composites have been studied in the 8.2-12.4 GHz (X”Band) frequency range which shows a shielding effectiveness up-to 59.83 dB, which strongly depends on dielectric loss and weight fraction of fly ash and γ-Fe2O3 in EG matrix.

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来源期刊

Journal of Water and Environmental Nanotechnology Materials Science-Materials Science (miscellaneous)

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

8 weeks