Achieving full effective microwave absorption in X band by double-layered design of glass fiber epoxy composites containing MWCNTs and Fe3O4 NPs

Chen, Wei; Zheng, Xiangnan; He, Xingyang; Su, Ying; Wang, Jun; Yang, Jin; Chen, Shun; Zheng, Zhengqi

doi:10.1016/j.polymertesting.2020.106448

Cited by 40 publications

(7 citation statements)

References 58 publications

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“…Finally, Fe 3 O 4 nanoparticles (diameter ranging from 10 to 50 nm) have been successfully experimented with to produce magnetic epoxy-based nanocomposites for a wide range of applications, such as microwave absorbing elements, microelectromechanical devices, micro-sensors, and systems to store/harvest energy [ 71 , 72 ]. A distinctive advantage of such nanomaterials in the mentioned applications resides in the possibility to control the final properties by adjusting the nanofiller content in the epoxy matrix.…”

Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

“…A distinctive advantage of such nanomaterials in the mentioned applications resides in the possibility to control the final properties by adjusting the nanofiller content in the epoxy matrix. It has been reported, for instance, that the nano-Fe 3 O 4 content has a positive effect on the capacity to store energy, on magnetic properties, and on microwave absorption performance [ 71 ].…”

Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

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Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Frigione

Lettieri

2020

Materials

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This paper aims at reviewing the works published in the last five years (2016–2020) on polymer nanocomposites based on epoxy resins. The different nanofillers successfully added to epoxies to enhance some of their characteristics, in relation to the nature and the feature of each nanofiller, are illustrated. The organic–inorganic hybrid nanostructured epoxies are also introduced and their strong potential in many applications has been highlighted. The different methods and routes employed for the production of nanofilled/nanostructured epoxies are described. A discussion of the main properties and final performance, which comprise durability, of epoxy nanocomposites, depending on chemical nature, shape, and size of nanoparticles and on their distribution, is presented. It is also shown why an efficient uniform dispersion of the nanofillers in the epoxy matrix, along with strong interfacial interactions with the polymeric network, will guarantee the success of the application for which the nanocomposite is proposed. The mechanisms yielding to the improved properties in comparison to the neat polymer are illustrated. The most important applications in which these new materials can better exploit their uniqueness are finally presented, also evidencing the aspects that limit a wider diffusion.

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Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Frigione

Lettieri

2020

Materials

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“…Furthermore, NPs are known to demonstrate high electrocatalytic activity [ 37 ]; this is why the loading of high-aspect ratio systems with NPs is very attractive. However, known methods of wet chemistry are useful for the decoration of high-aspect structures of various opal-type or nanowires morphologies [ 38 , 39 , 40 , 41 ]. While for inverted opal-type structures (such as AAO), there are no approaches that provide satisfactory coating parameters.…”

Section: Resultsmentioning

confidence: 99%

3D Nanocomposite with High Aspect Ratio Based on Polyaniline Decorated with Silver NPs: Synthesis and Application as Electrochemical Glucose Sensor

et al. 2023

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In this paper, we present a new methodology for creating 3D ordered porous nanocomposites based on anodic aluminum oxide template with polyaniline (PANI) and silver NPs. The approach includes in situ synthesis of polyaniline on templates of anodic aluminum oxide nanomembranes and laser-induced deposition (LID) of Ag NPs directly on the pore walls. The proposed method allows for the formation of structures with a high aspect ratio of the pores, topological ordering and uniformity of properties throughout the sample, and a high specific surface area. For the developed structures, we demonstrated their effectiveness as non-enzymatic electrochemical sensors on glucose in a concentration range crucial for medical applications. The obtained systems possess high potential for miniaturization and were applied to glucose detection in real objects—laboratory rat blood plasma.

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“…First, a porous skeleton for the mBPUF in the composites leads to multiple reflections and attenuates the incident wave [ 39 ]. Next, numerous interfaces are produced between the Fe 3 O 4 and the BPU in the foam skeleton and the membrane skeleton, which enables the transfer of the incident wave into heat via an interfacial polarization [ 40 ]. Third, the Fe 3 O 4 nanoparticles, which have both dielectric and magnetic loss characteristics, are encased in the matrix.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Lightweight Renewable Microwave-Absorbing Bio-Polyurethane/Fe3O4 Composite Foam: Structure Analysis and Absorption Mechanism

Tian

et al. 2022

IJMS

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Sustainable renewable polymer foam used as a lightweight porous skeleton for microwave absorption is a novel strategy that can effectively solve the problems of the large surface density, high additive amount, and narrow absorbing band of absorbing materials. In this article, novel renewable microwave-absorbing foams were prepared using Sapiumse biferum kernel oil-based polyurethane foam (BPUF) as porous matrix and Fe3O4-nanoparticles as magnetic absorbents. The microstructure and the microwave absorption performance, the structural effects on the properties, and electromagnetic mechanism of the magnetic BPUF (mBPUF) were systematically characterized and analyzed. The results show that the mBPUF displayed a porous hierarchical structure and was multi-interfacial, which provided a skeleton and matching layer for the Fe3O4 nanoparticles. The effective reflection loss (RL ≤ −10 dB) frequency of the mBPUF was from 4.16 GHz to 18 GHz with only 9 wt% content of Fe3O4 nanoparticles at a thickness of 1.5~5 mm. The surface density of the mBPUF coatings was less than 0.5 kg/cm2 at a thickness of 1.8 mm. The lightweight characteristics and broadband absorption were attributed to the porous hierarchical structures and the dielectric combined with the magnetic loss effect. It indicates that the mBPUF is a prospective broadband-absorbing material in the field of lightweight stealth materials.

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Achieving full effective microwave absorption in X band by double-layered design of glass fiber epoxy composites containing MWCNTs and Fe3O4 NPs

Cited by 40 publications

References 58 publications

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

3D Nanocomposite with High Aspect Ratio Based on Polyaniline Decorated with Silver NPs: Synthesis and Application as Electrochemical Glucose Sensor

Synthesis of Lightweight Renewable Microwave-Absorbing Bio-Polyurethane/Fe3O4 Composite Foam: Structure Analysis and Absorption Mechanism

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