Y. Yusmaniar, W. Aria, D.K. Hutomo, E. Handoko
The research aimed to find out the effect of the compound composition of magnetite (Fe 3 O 4 ) and silica (SiO 2 ) derived from natural materials silica are used as Fe 3 O 4 /SiO 2 composite within the matrix of the Unsaturated Polyester Resin (UPR) as an electromagnetic wave-absorbing material. The research conducted by extracting magnetite from iron sand using co-precipitation method and silica extracted from rice husk ash calcination method. The experiment was conducted with compositing both of extraction product with a certain ratio in the matrix. The next sample is used as an electromagnetic wave absorbent composite material along with the UPR. Electromagnetic wave absorption tested on 8 GHz-12GHz frequency. The results prove that Fe 3 O 4 /SiO 2 /UPR material by the composition of the composite is 1:1 can absorb electromagnetic waves at a frequency of 10 GHz with an absorb range 14.5 dB. © Published under licence by IOP Publishing Ltd.
Faculty of Mathematics and Natural Science, University of State Jakarta, Jakarta, Indonesia; Centre for Science and Technology of Advanced Materials, National Nuclear Energy Agency, Kawasan Puspiptek Serpong, Tangerang Selatan, Banten, Indonesia
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