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academies
November 22-23, 2018 | Paris, France
Journal of Materials Science and Nanotechnology | Volume: 2
Materials Physics and Materials Science
International Conference on
Attenuation performance of OPEFB-PCL composites incorporating NZF filler for microwave absorbing
applications at X-band region
Suzan J Obaiys
Heriot-Watt University, Malaysia
T
he insulating properties of Ni–Zn ferrites can be improved
by the addition of various types of insulating materials
such as polymers, fiber, etc. In this connection, ferrite–
polymer composites have been subjected to wide research,
because they have many applications: microwave devices and
telecommunication applications, electromagnetic interference
shielding and microwave absorption. Dielectric and magnetic
properties of such composites will depend on the size, shape
and amount of filler addition. Nickel Zinc Ferrite (Ni
0.5
Zn
0.5
Fe
2
O
4
)
or (NZF) material were prepared by using conventional solid-
state reaction technique. This study highlights the development
of microwave absorbing material from NZF by the addition of
fiber and polycaprolactone. Thermal Hake blending machine
was adopted to blend the powder structure of Ni
0.5
Zn
0.5
Fe
2
O
4
-
PCL-OPEFB which resulted to a homogeneous. These
composites were characterized by Fourier transform infrared
spectrometer and scanning electron microscopy (SEM). The
thermal degradation behaviour for composites was analyses
by thermogravimetric analysis (TGA) and (DTG). The complex
permeability was measured over a wide frequency range from
8GHz to 12GHz at room temperature. From our studies, it is
observed that the values of permeability increased with an
increase inNZF content. The permeabilitymeasured bymaterial
measurement software (Agilent 85071) with vector network
analyser. A rectangular waveguide device connected with a
microwave vector network analyser (VNA) is used to measure
the reflection and transmission parameters of composites
(|S21| and |S11|) respectively, in different percentage of NZF
filler. The results showed that the reflection/transmission ratio
can be modified for all composite samples of 1mm limited
thickness. It is observed that both the values of reflection
and transmission change with filler change in composites.
e:
s.obaiys@hw.ac.uk