Effect of fiber surface on flexural strength in carbon fabric reinforced epoxy composites

Autor(es)

Brocks, Thatiane ^[1] ; Hilario Cioffi, Maria Odila ^[1] ; Cornelis Voorwald, Herman Jacobus ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fatigue & Aeronaut Mat Res Grp, BR-12516410 Guaratingueta - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Surface Science; v. 274, p. 210-216, JUN 1 2013.
• Citações Web of Science: 29

Resumo

The effect of carbon fiber surface characteristics on flexural properties of structural composites is studied in this work. Two types of intermediate modulus carbon fibers were used: T800HB and IM7. Results revealed that higher mechanical properties are linked with higher interfacial adhesion. Morphologies and chemical compositions of commercial carbon fibers (CF) were characterized by Fourier Transformed Infra Red (FTIR) and Scanning Electronic Microscopy (SEM). Comparing the results, the T800HB apparently has more roughness, since the IM7 seems to be recovered for a polymeric film. On other hand, the IM7 one shows higher interactivity with epoxy resin system Cycom 890 RTM. Composites produced with Resin Transfer Molding (RTM) were tested on a flexural trial. Interfacial adhesion difference was showed with SEM and Dynamic Mechanical Analyses (DMA), justifying the higher flexural behavior of composites made with IM7 fibers. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 06/02121-6 - Compósito processado via RTM
• Beneficiário: Maria Odila Hilário Cioffi
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 09/03284-4 - Compósito Estrutural via RTM para Aplicação em Trem de Pouso
• Beneficiário: Thatiane Brocks
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 09/04123-4 - Desenvolvimento de compósitos processados por RTM para componentes de trem de pouso
• Beneficiário: Marcos Yutaka Shiino
• Modalidade de apoio: Bolsas no Brasil - Mestrado