Microwave Absorbing Material Using Rubber Wood Sawdust
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. Th...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
IEEE
2011
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/11943/1/Microwave_Absorbing_Material_Using_Rubber_Wood.pdf http://eprints.utem.edu.my/id/eprint/11943/2/Microwave_Absorbing_Material_Using_Rubber_Wood.pdf http://eprints.utem.edu.my/id/eprint/11943/ |
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| Summary: | 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.
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