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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of serrated edge and rectangular strips of MWCNT buckypaper on the electromagnetic properties of glass fiber/epoxy resin composites

Full text
Author(s):
Rojas, J. A. [1] ; Ribeiro, B. [1] ; Rezende, M. C. [1]
Total Authors: 3
Affiliation:
[1] Univ Fed Sao Paulo, Inst Sci & Technol, UNIFESP, BR-12231280 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Carbon; v. 160, p. 317-327, APR 30 2020.
Web of Science Citations: 0
Abstract

Serrated and rectangular strips designs of highly porous carbon nanotube buckypaper (BP) were incorporated between the layers of glass fiber/epoxy resin composites (GF/EP) and their electromagnetic and mechanical properties were evaluated. The laminates were studied by their complex electrical permittivities, reflectivity, and electromagnetic interference (EMI) shielding effectiveness (SE) in the X-band (8.2-12.4 GHz) and Ku-band (12.4-18 GHz). A large region promoting the electromagnetic wave attenuation of the laminates with values above 90% of attenuation (8.2-10.8 GHz) was reached for laminates containing between 0.75 and 2.5 wt% MWCNT. High attenuation values of -41.04 dB (>99.99%) at 8.3 GHz were obtained in the reflectivity analysis for laminates with serrated strips design and 0.75 wt % of MWCNT. Scanning electron microscopy (SEM) of the cross-section view and surface of the BP showed the presence of tunnels and nanocavities. The interlaminar shear strength (ILSS), dynamic mechanical analyses (DMA), and the impulse excitation technique (IET) showed increments of 23%, 6%, and 16%, respectively for the GF/EP/BP/SES-CB, GF/EP/BP/SES, GF/EP/BP/RS laminates compared to the base laminate. The compression shear test (CST) results remained the same compared to the control sample. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 17/04740-0 - PREPARATION AND CHARACTERIZATION OF MULTIFUNCTIONAL NANOSTRUCTURED COMPOSITES BASED ON GLASS FIBER/EPOXI RESIN/CARBON NANOTUBE BUCKYPAPER LAMINATE
Grantee:Bruno Ribeiro
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/09531-2 - DEVELOPMENT OF MULTIFUNCTIONAL NANOESTRUCTURED GREEN COMPOSITES BASED ON POLY(FURFURYL ALCOHOL)/GRAFITE NANOSHEETS FOR AEROSPACE APPLICATIONS
Grantee:Mirabel Cerqueira Rezende
Support Opportunities: Regular Research Grants