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Influence of two carbon plies on adhesion of unidirectional flax-fibers reinforced epoxy composites

Polymer composites, 2016-01, Vol.37 (1), p.241-253 [Peer Reviewed Journal]

2014 Society of Plastics Engineers ;2016 Society of Plastics Engineers ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0272-8397 ;EISSN: 1548-0569 ;DOI: 10.1002/pc.23175 ;CODEN: PCOMDI

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  • Title:
    Influence of two carbon plies on adhesion of unidirectional flax-fibers reinforced epoxy composites
  • Author: Karray, Mayssa ; Triki, Asma ; Poilâne, Christophe ; Picart, Pascal ; Gargouri, Mohamed
  • Subjects: Adhesion ; Carbon ; Engineering Sciences ; Fibers ; Flax ; Laminates ; Physics ; Plies ; Polarization ; Polymer matrix composites
  • Is Part Of: Polymer composites, 2016-01, Vol.37 (1), p.241-253
  • Description: In this work, we undertook a comparative study of the dynamic dielectric analysis of two unidirectional epoxy composites: flax‐fiber‐reinforced epoxy and flax/carbon‐fiber‐reinforced epoxy (FCFRE). In both composites, three relaxation processes were identified. The first one is the water dipoles polarization imputed to the presence of polar water molecules in flax fiber. The second relaxation process associated with conductivity occurs as a result of the carriers charges diffusion noted for high temperature above glass transition and low frequencies. As for the third dielectric relaxation associated with the interfacial polarization effect is attributable to the accumulation of charges at the fibers/matrix interface. The presence of two carbon plies in the reinforcement gives rise to two interfacial polarization effects in the FCFRE composite. The analysis of the Maxwell–Wagner–Sillars and the water dipoles polarizations using the Havriliak–Negami model revealed that the presence of two plies of carbon can locally decrease the adhesion of flax fibers in the matrix. This analysis was supported by the thermal properties using a differential scanning calorimety and the mechanical properties using a short beam shear test. POLYM. COMPOS., 241–253, 2016. © 2014 Society of Plastics Engineers
  • Publisher: Newtown: Blackwell Publishing Ltd
  • Language: English
  • Identifier: ISSN: 0272-8397
    EISSN: 1548-0569
    DOI: 10.1002/pc.23175
    CODEN: PCOMDI
  • Source: Alma/SFX Local Collection
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