Microwave Absorption Characteristics of Carbon Nanotubes

The impact of different multi-walled carbon nanotubes on the X-band microwave absorption of their epoxy nanocomposites

BACKGROUND Carbon nanotube (CNT) characteristics, besides the processing conditions, can change significantly the microwave absorption behavior of CNT/polymer composites. In this study, we investigated the influence of three commercial multi-walled CNT materials with various diameters and length-to-diameter aspect ratios on the X-band microwave absorption of epoxy nanocomposites with CNT conten...

Metal-free carbon nanotubes: synthesis, and enhanced intrinsic microwave absorption properties

In order to clearly understand the intrinsic microwave absorption properties of carbon nanomaterials, we proposed an efficient strategy to synthesize high purity metal-free carbon nanotubes (CNTs) over water-soluble K2CO3 particles through chemical vapor decomposition and water-washing process. The comparison results indicated the leftover catalyst caused negative effects in intrinsic microwave...

Synthesis of Carbon Nanotubes on Cerium-Substituted Barium Ferrite Substrate by Chemical Vapor Deposition for Preparation of a Microwave Absorbing Nanocomposite

In this research, at first, Ce-substituted barium ferrite, BaCe0.2Fe11.8O19 was prepared via the sol-gel method as a substrate and then Carbon NanoTubes (CNTs) was synthesized on the surface of the substrate by Chemical Vapor Deposition (CVD) technique. The structure, morphology, and electromagnetic performance of the synthesized nanocompos...

Optimisation of microwave absorption of carbon nanotube composites through use of carboxyl-epoxide functional group linkages

Lightweight, flexible and highly efficient microwave absorbing singlewalled carbon nanotube (SWNT)/polymer composites were fabricated through chemical functionalisation to ensure uniform dispersion of SWNTs in a polymer matrix. These composites were used to fabricate thin electromagnetic absorption coatings, which achieve a maximum reflection loss (RL) magnitude of 24 dB at X-band frequencies. ...

Microwave Absorption and EMI Shielding Behavior of Nanocomposites Based on Intrinsically Conducting Polymers, Graphene and Carbon Nanotubes