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

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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Enhancement of Chloroprene/Natural/Butadiene Rubber Nanocomposite Properties Using Organoclays and Their Combination with Carbon Black as Fillers

Polymers ◽

10.3390/polym13071085 ◽

2021 ◽

Vol 13 (7) ◽

pp. 1085

Author(s):

Patricia Castaño-Rivera ◽

Isabel Calle-Holguín ◽

Johanna Castaño ◽

Gustavo Cabrera-Barjas ◽

Karen Galvez-Garrido ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

High Performance ◽

Rubber Matrix ◽

Butadiene Rubber ◽

X Ray Diffraction ◽

X Ray ◽

Rubber Blends ◽

Ft Ir ◽

Chloroprene Rubber

Organoclay nanoparticles (Cloisite® C10A, Cloisite® C15) and their combination with carbon black (N330) were studied as fillers in chloroprene/natural/butadiene rubber blends to prepare nanocomposites. The effect of filler type and load on the physical mechanical properties of nanocomposites was determined and correlated with its structure, compatibility and cure properties using Fourier Transformed Infrared (FT-IR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and rheometric analysis. Physical mechanical properties were improved by organoclays at 5–7 phr. Nanocomposites with organoclays exhibited a remarkable increase up to 46% in abrasion resistance. The improvement in properties was attributed to good organoclay dispersion in the rubber matrix and to the compatibility between them and the chloroprene rubber. Carbon black at a 40 phr load was not the optimal concentration to interact with organoclays. The present study confirmed that organoclays can be a reinforcing filler for high performance applications in rubber nanocomposites.

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Study and characterization of E.M. absorbing properties of EPDM ferrite composite containing manganese zinc ferrite

Journal of Reinforced Plastics and Composites ◽

10.1177/0731684417690816 ◽

2017 ◽

Vol 36 (10) ◽

pp. 754-765 ◽

Cited By ~ 6

Author(s):

Mohit Katiyar ◽

Mahender Prasad ◽

Kavita Agarwal ◽

RK Singh ◽

Anand Kumar ◽

...

Keyword(s):

Zinc Ferrite ◽

Single Layer ◽

Ferrite Content ◽

Complex Permeability ◽

Frequency Range ◽

Manganese Zinc ◽

Manganese Zinc Ferrite ◽

Zn Ferrite ◽

Ferrite Composites ◽

Rubber Ferrite Composites

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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Surface Treatment Effects on the Mechanical Properties of Silica Carbon Black Reinforced Natural Rubber/Butadiene Rubber Composites

Polymers ◽

10.3390/polym11111763 ◽

2019 ◽

Vol 11 (11) ◽

pp. 1763 ◽

Cited By ~ 2

Author(s):

Miaomiao Qian ◽

Weimin Huang ◽

Jinfeng Wang ◽

Xiaofeng Wang ◽

Weiping Liu ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

Natural Rubber ◽

Surface Treatment ◽

High Performance ◽

Rubber Matrix ◽

Formaldehyde Resin ◽

Butadiene Rubber ◽

Interfacial Interactions ◽

Practical Applications

For the first time, phenolic formaldehyde resin (PF)-treated silica carbon black (SiCB) were prepared with different treatment conditions and their effect as fillers on the mechanical properties of filler filled natural rubber/butadiene rubber (NR/BR) composites were investigated in detail. The PF coating layer on the SiCB derived from rusk husk not only promoted the dispersion of the fillers but also improved the interfacial interactions between fillers and the rubber matrix. As a result, both the cross-link density and mechanical properties of the obtained composites were effectively enhanced. The filler SiCB with 3 wt % PF surface treatment greatly improved the tensile strength of NR/BR composites and reached 7.1 MPa, which increased by 73.7% compared with that of SiCB-filled NR/BR composites. The improved interfacial interactions promoted higher energy dissipation, leading to simultaneously enhancing the glass transition temperature of the obtained composites. Due to the easy processing and low cost of filler as well as the effectively enhanced mechanical properties of composites, the PF-coating methodology has a great potential for practical applications in SiCB reinforced high-performance composites. A commercial filler, carbon black (N774), was also used in this study and evaluated under the same conditions for comparison.

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Mechanical, Thermal, Electrical Characteristics and EMI Absorption Shielding Effectiveness of Rubber Composites Based on Ferrite and Carbon Fillers

Polymers ◽

10.3390/polym13172937 ◽

2021 ◽

Vol 13 (17) ◽

pp. 2937

Author(s):

Ján Kruželák ◽

Andrea Kvasničáková ◽

Klaudia Hložeková ◽

Roderik Plavec ◽

Rastislav Dosoudil ◽

...

Keyword(s):

Mechanical Properties ◽

Electromagnetic Interference ◽

Thermal Characteristics ◽

Butadiene Rubber ◽

Shielding Effectiveness ◽

Frequency Range ◽

Rubber Composites ◽

Manganese Zinc ◽

Carbon Fillers ◽

Carbon Based

In this work, rubber composites were fabricated by incorporation of manganese-zinc ferrite alone and in combination with carbon-based fillers into acrylonitrile-butadiene rubber. Electromagnetic parameters and electromagnetic interference (EMI) absorption shielding effectiveness of composite materials were examined in the frequency range 1 MHz–3 GHz. The influence of ferrite and fillers combination on thermal characteristics and mechanical properties of composites was investigated as well. The results revealed that ferrite imparts absorption shielding efficiency to the composites in tested frequency range. The absorption shielding effectiveness and absorption maxima of ferrite filled composites shifted to lower frequencies with increasing content of magnetic filler. The combination of carbon black and ferrite also resulted in the fabrication of efficient EMI shields. However, the EMI absorption shielding effectiveness was lower, which can be ascribed to higher electrical conductivity and higher permittivity of those materials. The highest conductivity and permittivity of composites filled with combination of carbon nanotubes and ferrite was responsible for the lowest absorption shielding effectiveness within the examined frequency range. The results also demonstrated that combination of ferrite with carbon-based fillers resulted in the enhancement of thermal conductivity and improvement of mechanical properties.

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Mechanical and rheological properties of partial replacement of carbon black by treated ultrafine calcium carbonate in natural rubber compounds

10.21203/rs.3.rs-226742/v1 ◽

2021 ◽

Author(s):

Vitor Peixoto Klienchen de Maria ◽

Fábio Paiva ◽

Flávio Camargo Cabrera ◽

Carlos Toshiyuki Hiranobe ◽

Gabriel Deltrejo Ribeiro ◽

...

Keyword(s):

Mechanical Properties ◽

Calcium Carbonate ◽

Carbon Black ◽

Natural Rubber ◽

Hybrid Composites ◽

Partial Substitution ◽

Partial Replacement ◽

Rubber Matrix ◽

High Concentration ◽

Carbonate Carbon

Abstract The present research aimed to develop natural rubber (NR) hybrid composites reinforced with treated ultrafine calcium carbonate/carbon black (CC/CB). The influence of CC/CB with various filler ratios (50/0, 40/10, 30/20, 20/30, 10/40 and 0/50) on mechanical properties and cure characteristics of the vulcanizates was investigated and their reinforcing efficiency was compared aiming to achieve the best ratio for CB partial substitution as compared to composites with CC and CB incorporated separately. The CC30/CB20 composites reached around to 17 MPa similar strength at break response compared to CC0/CB50 (16.83 MPa). Elongation at break increased 48% in relation to CC0/CB50. Hardness maintain similar values compare to high concentration of CB composites. Crosslink density results revealed similar chain number in rubber matrix representing better interaction between CC/CB. Scanning electron microscopy studies also reveal a good filler dispersion between filler particles and matrix. The results shown that the new material can be an alternative filler for partial substitution of CB conserving mechanical properties.

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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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