Effects of Grain Sizes on Rice Husk Ash Composite as Microwave Absorber

Electromagnetic interference affects human's health and interrupt the electrical equipment's performance. Metallic materials commonly used as microwave absorber is not cost-effective and too heavy. The agriculture waste from farming activities can be an alternative for inexpensive microwav...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-08, Vol.1083 (1), p.12051
Main Authors: Yahaya, N. Z., Salim, S. R., Mustafa, I. S., Razak, N. N. A., Zahid, Liyana
Format: Article
Language:English
Subjects:
Agricultural wastes
Agriculture
Ashes
Carbon content
Electric equipment
Electromagnetic interference
Grain size
Microwave absorbers
Microwave absorption
Organic compounds
Physics
Pore size
Rice
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Summary:Electromagnetic interference affects human's health and interrupt the electrical equipment's performance. Metallic materials commonly used as microwave absorber is not cost-effective and too heavy. The agriculture waste from farming activities can be an alternative for inexpensive microwave absorbing material. Agriculture waste contain organic compound which has carbon element in their composition. Rice husk is one of the agriculture waste known to have high carbon content and also lightweight which are desired to be a good microwave absorber. Therefore, rice husk ash is used and the effect of the rice husk grains sizes as microwave absorber is investigated. The reflection loss for smallest grain size 2.5 × 10-3 cm was achieved -22.7 dB which is the highest which also possess smallest pore size which is 0.432 μm indicates high surface area.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1083/1/012051