Synthesis, Characterization, and Microwave Absorption Property of the SnO2Nanowire/Paraffin Composites

Abstract

In this article, SnO2nanowires (NWs) have been prepared and their microwave absorption properties have been investigated in detail. Complex permittivity and permeability of the SnO2NWs/paraffin composites have been measured in a frequency range of 0.1–18 GHz, and the measured results are compared with that calculated from effective medium theory. The value of maximum reflection loss for the composites with 20 vol.% SnO2NWs is approximately −32.5 dB at 14 GHz with a thickness of 5.0 mm.

Electromagnetic wave shielding and microwave absorbing properties of hybrid epoxy resin/foliated graphite nanocomposites

“…Nanocomposites with higher contents of the foliated graphite present complex thermo decomposition processes, and the several weight losses observed could be related to the degradation of the epoxy matrix. This improved thermal stability of epoxy/FGN nanocomposites is believed to originate from the fact that FGN, which was dispersed homogeneously in the epoxy matrix, serve as the mass transfer barriers against the volatile pyrolyzed products in the epoxy matrix, eventually retarding thermal degradation of the nanocomposites 13, 14. This supports the intermolecular interactions between epoxy matrix and foliated graphite as according to the SEM analysis.…”

“…In everyday life, people incessantly meet with a lot of devices and tools such as microwave ovens, screens, inductive heaters, alarms, mobile phones, cables supplying electric energy for receivers and wires used for information transfer and energy, TV/radio stations, radar systems, and different kinds of electronic devices, which emit electromagnetic radiation, resulting in a significant increase of electromagnetic distortion in human environment 2, 6. The development of microwave absorbing techniques continues to attract much attention because of the increasing environmental pollution from nonionizing microwave irradiation and the essential part of a stealth defense system for all military platforms 12, 13. Furthermore, a controversy is in progress worldwide regarding the potential health hazards associated with exposure to electromagnetic fields.…”

Identifying smart conducting materials for Wi-Fi electromagnetic interference shielding

“…SnO 2 nanowires (NWs) are of a novel metal which was researched for microwave absorption properties rather than the reflection properties. The research measured the complex permittivity and permeability of the SnO 2 NWs/paraffin in a frequency range of 0.1 -18 GHz [8]. Carbon Nanotubes (CNT) and other conductive fillers in non conducting polymers were investigated for EMI shielding.…”

“…• ICP materials are environmentally stable and highly resistant to heat [8] • ICP material PAni blends may be made with varying conductivity between 10 −9 and 10 2 S/cm and that is good for shielding against electromagnetic interference (EMI). Also PAni nanofibre can be synthesized by using electrochemical methods.…”

Microwave absorption performance enhancement using glass fiber-reinforced polymer nanocomposites containing dielectric fillers in X-band

“…The development of radar absorbing structures (RASs) and radar absorbing materials (RAMs) for radar cross-section (RCS) reduction technology has gained precedence due to their safety in warfare to protect the aircraft against radar detection. [1][2][3][4] Among these two, RAS has more importance in terms of mechanical strength. 3 In this connection, the advanced techniques to develop RASs and composite structures that are made of multiple filler materials have paramount importance in RCS reduction.…”