Electromagnetic interference shielding performance and electromagnetic properties of wood-plastic nanocomposite with graphene nanoplatelets

2017 ◽  
Vol 28 (9) ◽  
pp. 6704-6711 ◽  
Author(s):  
Ibrahim Karteri ◽  
Mahmut Altun ◽  
Mahit Gunes
Keyword(s):  
Electromagnetic Interference ◽  
Graphene Nanoplatelets ◽  
Electromagnetic Properties ◽  
Electromagnetic Interference Shielding

Graphene nanohybrids: excellent electromagnetic properties for the absorbing and shielding of electromagnetic waves

2018 ◽  
Vol 6 (17) ◽  
pp. 4586-4602 ◽  
Author(s):  
Maosheng Cao ◽  
Chen Han ◽  
Xixi Wang ◽  
Min Zhang ◽  
Yanlan Zhang ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Charge Transport ◽  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Electromagnetic Waves ◽  
Electromagnetic Properties ◽  
Response Mechanism ◽  
Microwave Response ◽  
Electromagnetic Interference Shielding

The microwave absorption, electromagnetic interference shielding, and microwave response mechanism of graphene hybrids are highlighted, including relaxation, charge transport, magnetic resonance,etc.

scholarly journals Boron carbide composites with highly aligned graphene nanoplatelets: light-weight and efficient electromagnetic interference shielding materials at high temperatures

RSC Advances ◽  
2018 ◽  
Vol 8 (69) ◽  
pp. 39314-39320 ◽  
Author(s):  
Y. Q. Tan ◽  
H. Luo ◽  
X. S. Zhou ◽  
S. M. Peng ◽  
H. B. Zhang
Keyword(s):  
High Temperature ◽  
Boron Carbide ◽  
High Temperatures ◽  
Electromagnetic Interference ◽  
Graphene Nanoplatelets ◽  
Light Weight ◽  
Electromagnetic Interference Shielding ◽  
Shielding Composites

The incorporation of a small amount of highly aligned graphene nanoplatelets into boron carbide leads to light-weight and efficient high-temperature electromagnetic interference shielding composites.

Study of Mechanical, Electromagnetic, and Crystalline Properties of PP/SEBS/GNs Nano-Composites

2014 ◽  
Vol 910 ◽  
pp. 194-197
Author(s):  
Jia Horng Lin ◽  
Xiao Min Song ◽  
Chien Lin Huang ◽  
Ching Wen Lou
Keyword(s):  
Tensile Strength ◽  
Tensile Test ◽  
Electromagnetic Interference ◽  
Triblock Copolymer ◽  
Graphene Nanosheets ◽  
Electromagnetic Properties ◽  
Nano Composites ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Emi Se

Polypropylene (PP) and styrene-ethylene-butylene-styrene triblock copolymer (SEBS) are blended at a ratio of 70/30 to serve as matrices, to which graphene nanosheets (GNs), the reinforcement, are then added to form PP/SEBS/GNs nanocomposites. A differential scanning calorimeter (DSC) test, tensile test, conductivity test, and electromagnetic interference shielding test are performed on the nanocomposites to examine the crystalline, mechanical, and electromagnetic properties. DSC results show that the content of GNs is proportional to the crystallization temperature of PP. The conductivity and electromagnetic inference shielding effectiveness (EMI SE) increase with an increase in the content of GNs, and can reach an optimal 0.244 S/m and 22 dB, respectively. The results of a tensile test show that an increasing content of GNs results in a decrease and then an increase in the tensile strength of the nanocomposites, until it reaches optimal tensile strength is 17.44 MPa.

Electromagnetic Interference Shielding Properties of Silver-Plated Polyester Fabric

2012 ◽  
Vol 239-240 ◽  
pp. 310-313
Author(s):  
Ming Li Jiao ◽  
Shuang Hua Wang ◽  
Wang Xi Zhang
Keyword(s):  
Air Pollution ◽  
Electromagnetic Interference ◽  
Open Space ◽  
Polyester Fabric ◽  
Electromagnetic Properties ◽  
Knitted Fabric ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Shielding Properties ◽  
Enclosed Space

Over the last two decades, the electromagnetic radiation is becoming the fourth public pollution in addition to the noise, water and air pollution. Here, we had studied the structure and the electromagnetic properties of machine-knitted fabric coated with silver by means of microscopy and shielding effectiveness in the open space. The silver-plated polyester fabric showed a different shielding effectiveness of electromagnetic wave in the open space compared with enclosed space. The value of SE had closed relation with transmitting and receiving distance except the theory factor. When the frequency dropped below 900 MHz, the value SE usually became negative.

scholarly journals Thermoplastic polyurethane–graphene nanoplatelets microcellular foams for electromagnetic interference shielding

2020 ◽  
Vol 5 (3-4) ◽  
pp. 33-39
Author(s):  
Maria Giovanna Pastore Carbone ◽  
Maxime Beaugendre ◽  
Can Koral ◽  
Anastasios C. Manikas ◽  
Nikolaos Koutroumanis ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Thermoplastic Polyurethane ◽  
Graphene Nanoplatelets ◽  
Electromagnetic Interference Shielding ◽  
Microcellular Foams

scholarly journals Preparation and electromagnetic properties of zinc ferrite/expanded graphite composites

2014 ◽  
Vol 32 (3) ◽  
pp. 470-474 ◽  
Author(s):  
Guozhu Shen ◽  
Songtao Yu ◽  
Yuan Cao
Keyword(s):  
Magnetic Properties ◽  
Electromagnetic Interference ◽  
Zinc Ferrite ◽  
Expanded Graphite ◽  
Electromagnetic Properties ◽  
Precipitation Method ◽  
Expandable Graphite ◽  
Electromagnetic Interference Shielding ◽  
Graphite Composites ◽  
Shielding Material

AbstractAn effective process for the synthesis of nano spinel zinc ferrite/expanded graphite composites was developed in order to get an electromagnetic interference shielding material. Firstly, expandable graphite was prepared using sulfuric and nitric acid solutions. Then, the precursor of the composites was produced by chemical co-precipitation method, followed by heating treatment. The obtained composites were characterized by X-ray diffraction and scanning electron microscopy. The dielectric and magnetic properties were determined using vector network analyzer and vibrating sample magnetometry. The results showed that ferrite nanoparticles with the sizes of about 50–150 nm were uniformly dispersed on the surface and interspace of EG. The magnetic properties of the composites changed by adjusting the ferrite/EG ratio and the composites had high dielectric constant in the range of 2–18 GHz. These properties of the prepared composites suggest that they can be used as a promising electromagnetic interference shielding material.

scholarly journals Theoretical Study of Electromagnetic Interference Shielding of 2D MXenes Films

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 652 ◽  
Author(s):  
Zhenyu Li ◽  
Zeyu Wang ◽  
Weixin Lu ◽  
Bo Hou
Keyword(s):  
Electromagnetic Interference ◽  
Theoretical Study ◽  
Measured Data ◽  
Electromagnetic Properties ◽  
Metal Carbides ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Transition Metal Carbides ◽  
Electromagnetic Interference Shielding Effectiveness ◽  
Good Agreement

The advance of research on 2D transition metal carbides, carbonitrides, and nitrides (collectively known as MXenes) has progressed rapidly since the introduction of Ti3C2 in 2011. Nowadays the number of MXene synthesized in lab has reached more than 20, while there are currently about 20 theoretically predicted structures. In this study, we calculate the electromagnetic interference shielding effectiveness of a series of MXene films in theory and find that the results are in good agreement with the measured data. From this, we can use this method to calculate electromagnetic properties of all kinds of 2D material films which are similar to Mxenes.

Superior electromagnetic interference shielding 3D graphene nanoplatelets/reduced graphene oxide foam/epoxy nanocomposites with high thermal conductivity

2019 ◽  
Vol 7 (9) ◽  
pp. 2725-2733 ◽  
Author(s):  
Chaobo Liang ◽  
Hua Qiu ◽  
Yangyang Han ◽  
Hongbo Gu ◽  
Ping Song ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electromagnetic Interference ◽  
Graphene Nanoplatelets ◽  
High Thermal Conductivity ◽  
Electromagnetic Interference Shielding ◽  
3D Graphene ◽  
Epoxy Nanocomposite ◽  
Reduced Graphene

A 3D graphene nanoplatelets/reduced graphene oxide foam/epoxy nanocomposite exhibits superior electromagnetic interference shielding and excellent thermal conductivity.

Effect of iron oxide nanoparticle size on electromagnetic properties of composite nanofibers

2017 ◽  
Vol 52 (13) ◽  
pp. 1723-1736 ◽  
Author(s):  
Masoumeh Bayat ◽  
Heejae Yang ◽  
Frank Ko
Keyword(s):  
Magnetite Nanoparticles ◽  
Electromagnetic Interference ◽  
Composite Nanofibers ◽  
Carbon Nanofiber ◽  
Electromagnetic Properties ◽  
Iron Oxide Nanoparticle ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Band Frequency ◽  
Electromagnetic Interference Shielding Effectiveness

Electrically conductive and magnetically permeable carbon nanofiber-based composites were developed using the electrospinning with subsequent heat treatment. The composite nanofiber contains a variable composition of magnetite nanoparticles with two different size regimes, ranging from superparamagnetic (10–20 nm) to ferromagnetic (20–30 nm). The composite nanofibers are then characterized using Scanning/Transmission Electron Microscopy, X-Ray Diffractometry, Raman Spectroscopy, four-point probe, and a Superconducting Quantum Interference Device. Electromagnetic Interference Shielding Effectiveness of pristine carbon nanofibers as well as electromagnetic composite nanofibers are examined in the X-band frequency region. Higher degree of graphitization, electrical conductivity, and magnetic strength are obtained for nanocomposites containing larger magnetite nanoparticles (20–30 nm). A transition from superpartamagnetic to ferromagnetic characteristics is observed during nanocomposite processing. Electromagnetic Interference Shielding Effectiveness of as high as 68 dB (in the working frequency of 10.4 GHz) is observed for composite nanofibers fabricated with larger magnetite nanoparticles carbonized at 900℃.

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