Microwave Absorbing Material Using Rubber Wood Sawdust

Se, Sian Meng and Shaaban, Azizah and Mohd Ibrahim, Imran (2011) Microwave Absorbing Material Using Rubber Wood Sawdust. Wireless Technology and Applications (ISWTA), 2011 IEEE Symposium on. pp. 192-197. ISSN 978-1-4577-1496-2

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Abstract

Abstract - A flat microwave absorber working at frequency 1.8GHz was developed by impregnation of activated carbon and polyurethane. The activated carbon is prepared from the conversion of rubber wood sawdust through chemical activation process using ZnCl2 solution as the precursor agent. The process involves leaching, heating and washing. The impregnation ratio between ZnCl2 and rubber wood sawdust were at 1:1, 1.5:1 and 2:1. All samples are heated at temperature of 500o C for 60 minutes. It was found that the chemical activation at impregnation ratio of 2:1 produced high purity activated carbons with 79 percent carbon content. Based on the BET analysis, the surface area of the powder for impregnation ratio 1.5:1 reported highest value of 1301 m2 /g, this formulation is selected for making microwave absorber and it was reported that the reflection loss is recorded 10dB at 1.8 GHz.

Item Type: Article
Uncontrolled Keywords: microwave absorbing material, reflection co-efficient, activated carbon, rubber wood sawdust, chemical activation, agricultural wastes.
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User: Assoc. Prof. Azizah Shaaban
Date Deposited: 28 Mar 2014 02:36
Last Modified: 28 May 2015 04:21
URI: http://eprints.utem.edu.my/id/eprint/11943
Statistic Details: View Download Statistic

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