Electrical conductivity and electromagnetic shielding performance of glass fiber-reinforced epoxy composites with multiwalled carbon nanotube buckypaper interlayer

Autor(es)

Ribeiro, Bruno ^[1] ; Corredor, Jefersson Alexander Rojas ^[1] ; de Paula Santos, Luis Felipe ^[2] ; Gomes, Newton Adriano Santos ^[3] ; Rezende, Mirabel Cerqueira ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP - Brazil

^[2] Univ Estadual Paulista Julio Mesquita Filho UNESP, Dept Mat & Tecnol, Guaratingueta, SP - Brazil

^[3] Inst Tecnol Aeronaut ITA, Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 32, n. 2, p. 1962-1976, JAN 2021.
• Citações Web of Science: 3

Resumo

Glass fiber/epoxy-reinforced multi-walled carbon nanotube buckypaper composites (GF/EP/BP) were fabricated by hot compression molding process to evaluate its electromagnetic interference (EMI) shielding efficiency (SE) in the X-band (8.2-12.4 GHz) frequency range. Scanning electron microscopy (SEM) revealed a porous structure for the CNT film and good overall quality of the GF/EP/BP composite with no apparent voids or defects associated to the lamination process. The electrical conductivity of the CNT film was around 996 S/m and its incorporation at the mid-plane of the laminates had no influence in the electrical conduction of the composites. EMI SE results of about 18 dB were obtained for the 3 mm nanostructured composite over the X-band so that the dielectric properties, the total electrical conductivity, and the interfacial polarization phenomenon had great importance in the EMI shielding properties of the manufactured composites. (AU)

• Processo FAPESP: 18/09531-2 - Desenvolvimento de compósitos verdes nanoestruturados multifuncionais baseados em poli(álcool furfurílico)/nanolâminas de grafite para aplicações aeroespaciais
• Beneficiário: Mirabel Cerqueira Rezende
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/07867-3 - Processamento e caracterização de compósitos termoplásticos multifuncionais reforçados com fibras de carbono e buckypaper de nanotubos de carbono
• Beneficiário: Luis Felipe de Paula Santos
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/04740-0 - Obtenção e caracterização de compósitos nanoestruturados multifuncionais baseados em laminado de fibra de vidro/resina epóxi/buckypapers de nanotubos de carbono
• Beneficiário: Bruno Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado