Modification of dielectric and mechanical properties of rubber ferrite composites containing manganese zinc ferrite

EPDM rubber has been used as matrix and manganese–zinc ferrite as magnetic filler. EPDM ferrite composites were prepared with varying loading in different compositions of Mn–Zn ferrite (RFC-1, 2, 3 and 4) and moulded in the test samples of different thicknesses i.e. 1.5 mm, 2.5 mm and 5 mm. Physico-mechanical properties of EPDM ferrite composites were determined. Complex permeability and permittivity parameters of rubber ferrite composites were measured using rectangular waveguide in the frequency range of 3.95–5.85 GHz. The variation of reflection loss (RL) of single layer rubber-ferrite composites has been investigated as a function of frequency, ferrite content and thickness of composites by unique single horn interferometry technique in the frequency range of 2–18 GHz. It is observed that microwave absorption of rubber–ferrite composites has increased with increase of ferrite content as well as thickness in the frequency range of 2–18 GHz.

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Studies on the activation energy from the ac conductivity measurements of rubber ferrite composites containing manganese zinc ferrite

Physica B Condensed Matter ◽

10.1016/j.physb.2012.06.006 ◽

2012 ◽

Vol 407 (21) ◽

pp. 4097-4103 ◽

Cited By ~ 28

Author(s):

Mohd. Hashim ◽

Alimuddin ◽

Shalendra Kumar ◽

Sagar E. Shirsath ◽

E.M. Mohammed ◽

...

Keyword(s):

Activation Energy ◽

Ac Conductivity ◽

Zinc Ferrite ◽

Conductivity Measurements ◽

Manganese Zinc ◽

Manganese Zinc Ferrite ◽

Ac Conductivity Measurements ◽

Ferrite Composites ◽

Rubber Ferrite Composites

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Electromagnetic Interference Shielding and Physical-Mechanical Characteristics of Rubber Composites Filled with Manganese-Zinc Ferrite and Carbon Black

Polymers ◽

10.3390/polym13040616 ◽

2021 ◽

Vol 13 (4) ◽

pp. 616

Author(s):

Ján Kruželák ◽

Andrea Kvasničáková ◽

Klaudia Hložeková ◽

Rastislav Dosoudil ◽

Marek Gořalík ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

Zinc Ferrite ◽

Mechanical Characteristics ◽

Hybrid Composites ◽

Rubber Matrix ◽

Butadiene Rubber ◽

Frequency Range ◽

Manganese Zinc ◽

Manganese Zinc Ferrite

In the present work, composite materials were prepared by incorporation of manganese-zinc ferrite, carbon black and combination of ferrite and carbon black into acrylonitrile-butadiene rubber (NBR). For cross-linking of composites, standard sulfur-based curing system was applied. The main goal was to investigate the influence of the fillers on the physical-mechanical properties of composites. Then, the electromagnetic absorption shielding ability was investigated in the frequency range 1 MHz–3 GHz. The results revealed that composites filled with ferrite provide sufficient absorption shielding performance in the tested frequency range. On the other hand, ferrite behaves as an inactive filler and deteriorates the physical-mechanical characteristics of composites. Carbon black reinforces the rubber matrix and contributes to the improvement of physical-mechanical properties. However, composites filled with carbon black are not able to absorb electromagnetic radiation in the given frequency range. Finally, the combination of carbon black and ferrite resulted in the modification of both physical-mechanical characteristics and absorption shielding ability of hybrid composites.

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Loading dependence similarities on the cure time and mechanical properties of rubber ferrite composites containing nickel zinc ferrite

Materials Letters ◽

10.1016/s0167-577x(03)00079-x ◽

2003 ◽

Vol 57 (22-23) ◽

pp. 3381-3386 ◽

Cited By ~ 31

Author(s):

K.A. Malini ◽

P. Kurian ◽

M.R. Anantharaman

Keyword(s):

Mechanical Properties ◽

Zinc Ferrite ◽

Nickel Zinc ◽

Cure Time ◽

Ferrite Composites ◽

Rubber Ferrite Composites

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Design and Performance Research on Dual Layer Cement Based Absorber Reinforced with Graphene Nanosheets and Manganese-zinc Ferrite

Materials Science ◽

10.5755/j02.ms.24680 ◽

2021 ◽

Author(s):

Yafei SUN ◽

Tianshu ZHOU ◽

Yueyue PENG ◽

Hongwei LIU

Keyword(s):

Mechanical Properties ◽

Electrical Resistivity ◽

Zinc Ferrite ◽

Graphene Nanosheets ◽

Effective Bandwidth ◽

X Ray Diffraction ◽

Sem Images ◽

Manganese Zinc ◽

Manganese Zinc Ferrite ◽

And Performance

Dual layer cement-based absorber is synthesized by mixing with graphene nanosheets and manganese-zinc ferrite, to study the effect of absorbing filler content on the mechanical properties, microstructure, electrical resistivity and reflectivity of the paste. The microstructure of the absorber is seen by Scanning Electron Microscope (SEM) images, Fourier Transform Infrared (FTIR) spectroscopy, X-Ray Diffraction (XRD) curves of the absorber. The results show that graphene nanosheets significantly reduce the electrical resistivity of paste, increasing its mechanical properties by improving its pore structure. SEM images indicate that graphene nanosheets promote the increase and coarsening of cement hydration products and produce a large number of dense bulk crystals. Furthermore, reflectivity measurements show that the minimum reflectivity of – 14.1 dB is obtained in the range of 2 ~ 18 GHz and the effective bandwidth of 16 GHz is obtained when reflectivity is less than – 7 dB. This study provides a new method for the preparation of dual layer cement-based absorber.

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Dielectric and Mechanical Properties of Rubber Ferrite Composites Containing Barium Ferrite

Progress in Rubber Plastics and Recycling Technology ◽

10.1177/147776060201800404 ◽

2002 ◽

Vol 18 (4) ◽

pp. 269-282 ◽

Cited By ~ 2

Author(s):

M. A. Soloman ◽

Philip Kurian ◽

M. R. Anantharaman

Keyword(s):

Mechanical Properties ◽

Magnetic Property ◽

Barium Ferrite ◽

Value Added ◽

Dielectric Strength ◽

High Tech ◽

Synthetic Rubber ◽

Ferrite Composites ◽

Dielectric And Mechanical Properties ◽

Rubber Ferrite Composites

The incorporation of various types of ferrites in rubber matrixes leads to the development of rubber ferrite composites (RFC). These RFC have a large number of applications as flexible magnets, high-tech sensors, for telecommunication and radiowave absorbers. Both natural and synthetic rubber has the potential of being value added by the incorporation of ferrites. Applications like microwave absorbers warrant that these composites have an appropriate dielectric strength with the required magnetic property. This can be achieved by synthesizing composites based on natural rubber and ferrites. In this paper we report the synthesis of RFC containing barium ferrite according to a specific recipe and its evaluation of dielectric and mechanical properties.

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