Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7212217 | Composites Part B: Engineering | 2018 | 27 Pages |
Abstract
Various morphologies of α-MnO2 nanostructures were synthesized on the surface of woven Kevlar fiber (WKF) by hydrothermal method under different reaction conditions. Reduced graphene oxide-polyaniline nanofiber (RGO-PANI) arrays were synthesized by an in situ dilute polymerization technique and then dispersed within polyester (PES) resin. High-performance composites based on α-MnO2-grown WKF and RGO-PANI array-dispersed PES were fabricated with effective microwave-absorbing and mechanical properties by vacuum-assisted resin transfer molding (VARTM). WKF/MnO2 nanofibers/PES/PANI-RGO (2%) composites showed superior electromagnetic parameters in the frequency range of 1-18â¯GHz. The reflection loss (RL) of WKF/MnO2 nanofibers/PES/PANI-RGO (2.0%) was â36.5â¯dBâ¯at an absorbing frequency of 11.8â¯GHz, which has not been reported before. A higher tensile strength (160.12%), modulus (104.43%), and absorbed impact energy (207%) were observed for α-MnO2 nanofibers, compared with other morphologies of α-MnO2-incorporated WKF composites and the properties were enhanced with an increased percentage of PANI-RGO.
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Authors
Ankita Hazarika, Biplab K. Deka, Kyungil Kong, DoYoung Kim, Young-Woo Nam, Jae-Hun Choi, Chun-Gon Kim, Young-Bin Park, Hyung Wook Park,