γ-Fe2O3–MWNT/poly(p-phenylenebenzobisoxazole) composites with excellent microwave absorption performance and thermal stability

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6440-6447 ◽  
Author(s):  
Yi Chen ◽  
Xiaoyun Liu ◽  
Xiaoyang Mao ◽  
Qixin Zhuang ◽  
Zhong Xie ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Microwave Absorption ◽  
Absorption Properties ◽  
Absorption Performance ◽  
Microwave Absorption Performance

A thermostable γ-Fe2O3–MWNTs/PBO composite with excellent absorption properties was obtained with a low content of magnetic fillers and a well defined structure.

scholarly journals Effect of Reaction Time on Microwave Absorption Properties of Fe3O4 Hollow Spheres Synthesized via Ostwald Ripening

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Absorption ◽  
Ostwald Ripening ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Structures ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Hollow magnetic structures have great potential to be used in the microwave absorbing field. Herein, Fe3O4 hollow spheres with different levels of hollowness were synthesized by the hydrothermal method under Ostwald ripening effect. In addition to their microstructures, the microwave absorption properties of such spheres were investigated. The results show that the grain size and hollowness of Fe3O4 hollow spheres both increase as the reaction time increases. With increasing hollowness, the attenuation ability of electromagnetic wave of Fe3O4 spheres increases first and then decreases, finally increases sharply after the spheres break down. Samples with strong attenuation ability can achieve good impedance matching, which it does preferentially as the absorber thickness increases. Fe3O4 hollow spheres show the best microwave absorption performance when the reaction time is 24 h. The minimum reflection loss (RL (min)) can reach −40 dB, while the thickness is only 3.2 mm.

scholarly journals Fish bone-derived interconnected carbon nanofibers for efficient and lightweight microwave absorption

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Yangyang Gu ◽  
Peng Dai ◽  
Wen Zhang ◽  
Zhanwen Su
Keyword(s):  
Microwave Absorption ◽  
Carbon Nanofibers ◽  
Three Dimensional ◽  
Fish Bone ◽  
Absorption Properties ◽  
Simple Method ◽  
Microwave Absorption Properties ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
Better Than

AbstractIn this work, we demonstrated a simple method for preparing three-dimensional interconnected carbon nanofibers (ICNF) derived from fish bone as an efficient and lightweight microwave absorber. The as-obtained ICNF exhibits excellent microwave absorption performance with a maximum reflection loss of –59.2 dB at the filler content of 15 wt%. In addition, the effective absorption bandwidth can reach 4.96 GHz at the thickness of 2 mm. The outstanding microwave absorption properties can be mainly ascribed to its well-defined interconnected nanofibers architecture and the doping of nitrogen atoms, which are also better than most of the reported carbon-based absorbents. This work paves an attractive way for the design and fabrication of highly efficient and lightweight electromagnetic wave absorbers.

Hybrids of cobalt nanochains and polyvinylidene fluoride with enhanced microwave absorption performance

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 55546-55551 ◽  
Author(s):  
Shu-Qing Lv ◽  
Ya-Fei Pan ◽  
Pei-Bo Yang ◽  
Guang-Sheng Wang
Keyword(s):  
Microwave Absorption ◽  
Polyvinylidene Fluoride ◽  
Chemical Method ◽  
Wet Chemical Method ◽  
Absorption Properties ◽  
Flexible Film ◽  
Absorption Performance ◽  
Wet Chemical ◽  
Microwave Absorption Performance

By using a simple wet chemical method and hot-molding procedure, a kind of flexible film with enhance absorption properties based on binary cobalt nanochains/polyvinylidene fluoride (PVDF) hybrids has been successfully fabricated.

scholarly journals Dual-functional SiOC ceramics coating modified carbon fibers with enhanced microwave absorption performance

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30685-30692 ◽  
Author(s):  
Sifan Zeng ◽  
Wanlin Feng ◽  
Shuyuan Peng ◽  
Zhen Teng ◽  
Chen Chen ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbon Fibers ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Dual Functional ◽  
Absorption Performance ◽  
Microwave Absorption Performance

The SiOC ceramics coating modified carbon fibers improved anti-oxidation and refine microwave absorption properties.

Facile synthesis of 3D flower-like Ni microspheres with enhanced microwave absorption properties

2018 ◽  
Vol 6 (36) ◽  
pp. 9615-9623 ◽  
Author(s):  
Dawei Liu ◽  
Yunchen Du ◽  
Zhennan Li ◽  
Yahui Wang ◽  
Ping Xu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Three Dimensional ◽  
Facile Synthesis ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Three-dimensional flower-like Ni microspheres with enhanced microwave absorption performance can be easily synthesized through a simple precursor-directed method.

Preparation of the PBOPy/PPy/Fe3O4 composites with high microwave absorption performance and thermal stability

2014 ◽  
Vol 100 ◽  
pp. 212-219 ◽  
Author(s):  
Yangming Li ◽  
Dandan Chen ◽  
Xiaoyun Liu ◽  
Yunchao Zhou ◽  
Qixin Zhuang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Microwave Absorption ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Flexible nanocomposites with enhanced microwave absorption properties based on Fe3O4/SiO2 nanorods and polyvinylidene fluoride

2015 ◽  
Vol 3 (23) ◽  
pp. 12197-12204 ◽  
Author(s):  
Xiaofang Liu ◽  
Yaxin Chen ◽  
Xinrui Cui ◽  
Min Zeng ◽  
Ronghai Yu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Polyvinylidene Fluoride ◽  
Filler Content ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Absorption Performance ◽  
Pvdf Matrix ◽  
Microwave Absorption Performance

Flexible Fe3O4/SiO2/PVDF nanocomposites are prepared by embedding porous Fe3O4/SiO2 core/shell nanorods in polyvinylidene fluoride (PVDF) matrix. The nanocomposite with filler content of 40 wt% shows excellent microwave absorption performance over 2−18 GHz.

Size-dependent microwave absorption properties of Fe3O4 nanodiscs

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25444-25448 ◽  
Author(s):  
Yong Yang ◽  
Meng Li ◽  
Yuping Wu ◽  
Baoyu Zong ◽  
Jun Ding
Keyword(s):  
Microwave Absorption ◽  
High Quality ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Size Dependent ◽  
Absorption Performance ◽  
Microwave Absorption Performance

High quality Fe3O4 nanodiscs with different sizes are successfully synthesized and their size dependent microwave absorption performance are investigated.

Structure and Microwave Absorption Properties of Polyaniline/Zn Ferrite Composites

NANO ◽  
2018 ◽  
Vol 13 (09) ◽  
pp. 1850105 ◽  
Author(s):  
Honglong Xing ◽  
Ye Liu ◽  
Zhenfeng Liu ◽  
Huan Wang ◽  
Hanxiao Jia
Keyword(s):  
Thermal Stability ◽  
Microwave Absorption ◽  
Coating Thickness ◽  
Phase Particle ◽  
Step Method ◽  
Microwave Absorption Properties ◽  
Zn Ferrite ◽  
Absorption Performance ◽  
Ferrite Composites ◽  
Microwave Absorption Performance

Polyaniline (PANI)/Zn ferrite composites were fabricated by simple two-step method. The crystal phase, particle size, morphology, thermal stability and conductivity were characterized. Electromagnetic parameters of PANI/Zn ferrite composites were measured at room temperature in the frequency of 2–18[Formula: see text]GHz. The prepared composite had an amorphous fluffy structure, Zn ferrite nanoparticles with diameters ranging from 20[Formula: see text]nm to 30[Formula: see text]nm are encapsulated in PANI or on PANI surface, and the thermal stability of the composite is poor. But Zn ferrite content plays a key role in influencing this structure and regulating microwave attenuation capability. The PANI/Zn ferrite composites showed an enhanced microwave absorption performance in Ku band at thin coating thickness which corresponds to RL value below [Formula: see text][Formula: see text]dB and the minimum reflection loss (RL) is [Formula: see text][Formula: see text]dB at 17.6[Formula: see text]GHz with the coating thickness of 1.4[Formula: see text]mm.

Sign in / Sign up

Export Citation Format

Share Document