Modulating dielectric loss of mesoporous carbon fibers with radar cross section reduction performance via computer simulation technology

2021 ◽  
Author(s):  
Jiabin Chen ◽  
Xiaohui Liang ◽  
Jing Zheng ◽  
Weihua Gu ◽  
Chunchuan Pei ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Dielectric Loss ◽  
Cross Section ◽  
Carbon Fibers ◽  
Mesoporous Carbon ◽  
Tetraethyl Orthosilicate ◽  
Light Weight ◽  
Microwave Absorbing Properties ◽  
Absorbing Material ◽  
Microwave Absorbing

Mesoporous carbon fibers, a kind of light weight microwave absorbing material, are prepared by electrospinning, through which the pore structure and microwave absorbing properties are influenced by the addition of tetraethyl orthosilicate.

Mesoporous carbon hollow spheres as a light weight microwave absorbing material showing modulating dielectric loss

2019 ◽  
Vol 48 (27) ◽  
pp. 10145-10150 ◽  
Author(s):  
Jiabin Chen ◽  
Xiaohui Liang ◽  
Wei Liu ◽  
Weihua Gu ◽  
Baoshan Zhang ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Mesoporous Carbon ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Light Weight ◽  
Absorption Properties ◽  
One Pot ◽  
Microwave Absorption Properties ◽  
Absorbing Material ◽  
Carbon Hollow Spheres

Mesoporous carbon hollow spheres (MCHS) were fabricated by a simple one-pot process. Their great microwave absorption properties are attributed to the outstanding impedance matching and strong dielectric loss.

Microwave Absorbing Properties of Carbon Fibers Modified with BN/SiC Composite Coatings

2014 ◽  
Vol 29 (10) ◽  
pp. 1093 ◽  
Author(s):  
ZHOU Wei ◽  
XIAO Peng ◽  
LI Yang ◽  
LUO Heng ◽  
HONG Wen
Keyword(s):  
Carbon Fibers ◽  
Composite Coatings ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

Effect of short carbon fibers and MWCNTs on microwave absorbing properties of polyester composites containing nickel-coated carbon fibers

2010 ◽  
Vol 70 (1) ◽  
pp. 102-109 ◽  
Author(s):  
Igor Maria De Rosa ◽  
Adrian Dinescu ◽  
Fabrizio Sarasini ◽  
Maria Sabrina Sarto ◽  
Alessio Tamburrano
Keyword(s):  
Carbon Fibers ◽  
Microwave Absorbing Properties ◽  
Polyester Composites ◽  
Microwave Absorbing ◽  
Coated Carbon ◽  
Short Carbon

Microwave Absorbing Properties of MnO2/Ni-Zn Ferrite/Graphite Structural Composite

2012 ◽  
Vol 535-537 ◽  
pp. 201-205 ◽  
Author(s):  
Jing Lan Deng ◽  
Ke Huang
Keyword(s):  
Zinc Ferrite ◽  
Layer Structure ◽  
Microwave Absorbing Properties ◽  
Matching Layer ◽  
Nickel Zinc ◽  
Zn Ferrite ◽  
Structural Composite ◽  
Absorbing Material ◽  
Microwave Absorbing ◽  
Absorbing Layer

In order to get high microwave absorbing properties, a new kind of three-layer structure composite absorption material was designed and prepared for optimal attenuation. Manganese Oxide was used as the absorbent in the matching layer. Nickel-Zinc ferrite (Ni-Zn ferrite) was used as the absorbent in the dielectric layer and Graphite was used as the absorbent in absorbing layer. The effects of different proportions of absorbents on the microwave absorbing properties were investigated. The results shows that the maximum wave absorbing peak of the 11# sample with the thickness of 5mm is −38.54dB at 14.35GHz and had a bandwidth of 7.1GHz (R<−10dB). This is very important in the design and application of absorbing material.

scholarly journals Engineering of dielectric composites on electromagnetic and microwave absorbing properties for operation in the X-band

2020 ◽  
pp. 2150001
Author(s):  
Bhoopendra Singh ◽  
Vivek Pratap ◽  
Mohit Katiyar ◽  
S. M. Abbas ◽  
Y. K. Sharma ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Network Analyzer ◽  
Frequency Range ◽  
Melt Mixing ◽  
Band Frequency ◽  
Microwave Absorbing Properties ◽  
X Band ◽  
Mixing Method ◽  
Microwave Absorbing ◽  
Potential Use

In this study, carbon black (CB) powder-loaded polyurethane (PU) composites (CB–PU composites) were prepared by melt mixing method with different volume percentages (45, 50, 55, 58 and 61 vol.%) of CB in the PU matrix. The prepared CB–PU composites had been further studied for surface morphology using the field-emission scanning electron microscopy (FESEM) technique. Dielectric properties in terms of real permittivity ([Formula: see text] and imaginary permittivity ([Formula: see text] of the fabricated composites were computed using an Agilent E8364B vector network analyzer in the frequency range of 8–12 GHz ([Formula: see text]-band). Dielectric loss factor of the prepared CB–PU composites was computed in terms of the dielectric loss tangent (tan [Formula: see text] = [Formula: see text]/[Formula: see text]. Microwave absorbing properties were appraised in terms of the reflection loss (RL) which in turn was calculated for varying thicknesses of the prepared composites from the measured real and imaginary permittivity data. The minimum RL was observed as −20.10 dB for the absorber with a thickness of 2.2 mm and the bandwidth achieved was 1.92 GHz for RL [Formula: see text]10 dB. Based on the above results these CB–PU composites have potential use as effective microwave absorbers in 8–12-GHz ([Formula: see text]-band) frequency range.

scholarly journals Preparation of boron nitride nanosheet-coated carbon fibres and their enhanced antioxidant and microwave-absorbing properties

RSC Advances ◽  
2018 ◽  
Vol 8 (32) ◽  
pp. 17944-17949 ◽  
Author(s):  
Zhichao Xu ◽  
Yongjun Chen ◽  
Wei Li ◽  
Jianbao Li ◽  
Hui Yu ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Carbon Fibers ◽  
Carbon Fibres ◽  
Microwave Absorbing Properties ◽  
Boron Nitride Nanosheet ◽  
Microwave Absorbing ◽  
Coated Carbon

The coating of BN nanosheets on carbon fibers could enhance the anti-oxidation and microwave absorbing properties of carbon fibers significantly.

Fabrication and microwave absorbing properties of Li0.35Zn0.3Fe2.35O4 micro-belts/nickel-coated carbon fibers composites

2013 ◽  
Vol 39 (3) ◽  
pp. 2317-2322 ◽  
Author(s):  
Bao-Feng Zhao ◽  
Peixian Ma ◽  
Ju-Min Zhao ◽  
Deng-Ao Li ◽  
Xiaoli Yang
Keyword(s):  
Carbon Fibers ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing ◽  
Coated Carbon
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