Achieving wideband microwave absorption properties in PVDF nanocomposite foams with an ultra-low MWCNT content by introducing a microcellular structure

2020 ◽  
Vol 8 (1) ◽  
pp. 58-70 ◽  
Author(s):  
Biao Zhao ◽  
Jiushuai Deng ◽  
Chongxiang Zhao ◽  
Chongda Wang ◽  
Yu Guang Chen ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
High Efficiency ◽  
Wide Band ◽  
Light Weight ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Mwcnt Content ◽  
Small Thickness ◽  
Nanocomposite Foams ◽  
Band Absorption

PVDF nanocomposite foams with ultra-low MWCNT content exhibit high-efficiency microwave absorption properties with a light weight, strong and wide-band absorption, and small-thickness properties.

Bimetallic MOF-derived porous CoNi/C nanocomposites with ultra-wide band microwave absorption properties

2019 ◽  
Vol 43 (42) ◽  
pp. 16546-16554 ◽  
Author(s):  
Chang Liu ◽  
Jing Qiao ◽  
Xue Zhang ◽  
Dongmei Xu ◽  
Nannan Wu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Fine Particles ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Target Product ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing ◽  
Distributed Elements

The CoNi bimetallic MOF-derived composites were synthesized in this work. The target product is composed of fine particles with uniformly distributed elements of Ni, Co, C. The CoNi/C-650 sample displays good microwave absorbing properties.

Microwave absorption properties of hexagonal barium doped @cip composite in wide band

2018 ◽  
Vol 209 ◽  
pp. 298-302 ◽  
Author(s):  
F.Z. Mohammad ◽  
H. Arshad ◽  
M. Mudsar ◽  
S. Jawad ◽  
K.M. Ali
Keyword(s):  
Microwave Absorption ◽  
Wide Band ◽  
Absorption Properties ◽  
Microwave Absorption Properties

Preparation and electromagnetic wave absorption properties of novel dendrite-like NiCu alloy composite

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42587-42590 ◽  
Author(s):  
Biao Zhao ◽  
Gang Shao ◽  
Bingbing Fan ◽  
Wanyu Zhao ◽  
Rui Zhang
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Wide Band ◽  
Strong Absorption ◽  
Alloy Composite ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Nicu Alloys

The dendrite-like NiCu alloys show outstanding microwave absorption properties with the features of thin-thickness, strong absorption and wide-band.

scholarly journals Natural iron embedded hierarchically porous carbon with thin–thickness and high-efficiency microwave absorption properties

RSC Advances ◽  
2020 ◽  
Vol 10 (64) ◽  
pp. 38989-38999
Author(s):  
Can Zhang ◽  
Kuihu Zhao ◽  
Xueai Li ◽  
Wenqi Dong ◽  
Sufeng Wang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Porous Carbon ◽  
High Efficiency ◽  
Reductive Activation ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Hierarchically Porous ◽  
Natural Iron ◽  
First Time

Natural iron embedded HPCs are prepared using “reductive activation” with KOH for the first time, and exhibit excellent microwave absorption.

Hierarchical porous Ni@boehmite/nickel aluminum oxide flakes with enhanced microwave absorption ability

2017 ◽  
Vol 19 (13) ◽  
pp. 9128-9136 ◽  
Author(s):  
Biao Zhao ◽  
Junwei Liu ◽  
Xiaoqin Guo ◽  
Wanyu Zhao ◽  
Luyang Liang ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Microwave Absorption ◽  
High Efficiency ◽  
Wide Band ◽  
Core Shell ◽  
Nickel Aluminum ◽  
Small Thickness ◽  
Hierarchical Porous

Hierarchical core–shell composites with porous cores and flaky shells show superior absorption which possess many features, such as lightweight, wide band, small thickness and high efficiency absorption.

Investigation on microwave absorption properties of CuO/Cu2O-coated Ni nanocapsules as wide-band microwave absorbers

RSC Advances ◽  
2013 ◽  
Vol 3 (34) ◽  
pp. 14590 ◽  
Author(s):  
Xianguo Liu ◽  
Chao Feng ◽  
Siu Wing Or ◽  
Yuping Sun ◽  
Chuangui Jin ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Wide Band ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Microwave Absorbers

scholarly journals Hydrothermal Synthesis and Microwave Absorption Properties of Nickel Ferrite/Multiwalled Carbon Nanotubes Composites

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 534
Author(s):  
Lei Guo ◽  
Yusong He ◽  
Dong Chen ◽  
Bin Du ◽  
Wei Cao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Absorption ◽  
Multiwalled Carbon Nanotubes ◽  
Nickel Ferrite ◽  
High Efficiency ◽  
Scale Production ◽  
Absorption Properties ◽  
Multiwalled Carbon ◽  
Microwave Absorption Properties ◽  
Hierarchical Nanostructure

It is well accepted that the microwave absorption performance of ferrite can be enhanced via the hybridization. However, it is still very challenging to design the hierarchical nanostructure of ferrite hybrids to fabricate wave absorbing composites with both the high efficiency and lightweight. Herein, we successfully realize the in-situ synthesis of nickel ferrite/multiwalled carbon nanotubes (NiFe2O4/MWCNTs) hybrids with a large-scale production by the hydrothermal method. The structural characteristics, morphology, electromagnetic and microwave absorption properties were analyzed by X-ray diffraction, scanning electron microscope and vector network analyzer. The morphological study shows that NiFe2O4 nanoparticles with a small size (tens of nanometers) are coated on the MWCNTs, leading to a three-dimensional hierarchical nanostructure. The NiFe2O4/MWCNTs hybrids show satisfied microwave absorption properties. Typically, the optimized sample shows the minimum reflection loss of −19 dB at 11.3 GHz, and the bandwidth of the reflectivity below −10 dB is 2.5 GHz with a thin thickness of 1.5 mm. This result shall be due to the improved dielectric losses or interface polarization etc. Our results demonstrate a facile approach for the design of ferrite-based microwave absorber to meet the requirements of lightweight, thin-thickness and high efficiency.

Microwave wide band absorption by carbon from Corn cob-1

2016 ◽  
Vol 12 (2) ◽  
pp. 4204-4212 ◽  
Author(s):  
Maheshwar Sharon ◽  
Ritesh Vishwakarma ◽  
Abhijeet Rajendra Phatak ◽  
Golap Kalita ◽  
Nallin Sharma ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Agricultural Waste ◽  
Wide Band ◽  
Nickel Nitrate ◽  
Equivalent Amount ◽  
Frequency Range ◽  
Corn Cob ◽  
Different Temperatures ◽  
Band Absorption ◽  
5 Ghz

Corn cob, an agricultural waste, is paralyzed at different temperatures (700oC, 800oC and 900oC). Microwave absorption of carbon in the frequency range of 2 GHz to 8 GHz is reported. Carbon activated  with 5%  nickel nitrate showed more than 90% absorption of microwave in the frequency range from 6 GHz to 8 GHz, while carbon activated  with 10% Nickel nitrate treated corn cob showed 90% absorption  in the frequency range of 2.5 GHz to 5 GHz. Carbon showing the best absorption are characterized by XRD, Raman spectra and SEM . It is suggested that corn cob treatment   alone with KOH did not improve the microwave absorption, whereas treatment along with nickel nitrate improved the absorption property much better. It is proposed that treatment with nickel nitrate helps in creating suitable pores in carbon   which improved the absorption behavior because while treating carbon with 1N HCl helps to leach out nickel creating equivalent amount of pores in the carbon.

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