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Abstract
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In this study, CaCu3Ti4O12,
CaCu2MgTi4O12,
CaCu3Ti3.5Sn0.5O12
(CCTO) and Fe3O4
nanoparticles were
synthesized and characterized by XRD and SEM. Then,
the nanocomposites containing different types and content
of CCTO, Fe3O4
and grapheme oxide in epoxy vinyl ester
resin were prepared and the microwave absorption property
of the prepared nanocomposites was investigated. The type
and content of CCTO, content of Fe3O4
and content of graphene
oxide were optimized by Taguchi method to obtain
the nanocomposite with higher microwave absorption efficiency.
The higher absorption efficiency was obtained by
the nanocomposite prepared in optimal condition including
3 wt% of CaCu3Ti4O12,
1 wt% of Fe3O4
and 2 wt% of graphene
oxide. The reflection loss for prepared nanocomposite
was less than −30 dB (absorption ~99, 9%). The great
values of the dielectric loss and magnetic loss indicated
microwave absorption ability of prepared nanocomposite
arises from the effective combination of dielectric–magnetic
loss mechanisms.
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