Deformation and fracture behaviors of vinylester/fly ash composites

Authors

  • A. Stocchi,

    1. Materials Science and Technology Research Institute (INTEMA), University of Mar del Plata—National Research Council (CONICET), B7608FDQ Mar del Plata, Argentina
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  • E. Rodríguez,

    1. Materials Science and Technology Research Institute (INTEMA), University of Mar del Plata—National Research Council (CONICET), B7608FDQ Mar del Plata, Argentina
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  • A. Vázquez,

    1. Materials Science and Technology Research Institute (INTEMA), University of Mar del Plata—National Research Council (CONICET), B7608FDQ Mar del Plata, Argentina
    2. Polymers and Composite Materials Group, INTECIN (UBA-CONICET), Construction Department, Engineering Faculty, University of Buenos Aires, C1127AAR Buenos Aires, Argentina
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  • C. Bernal

    Corresponding author
    1. Advanced Materials Group (GMA), INTECIN (UBA-CONICET), Department of Mechanical Engineering, Engineering Faculty, University of Buenos Aires, C1063ACV Buenos Aires, Argentina
    • Advanced Materials Group (GMA), INTECIN (UBA-CONICET), Department of Mechanical Engineering, Engineering Faculty, University of Buenos Aires, C1063ACV Buenos Aires, Argentina
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Abstract

In this work, the deformation and fracture behaviors of a commercial vinylester resin reinforced with fly ash were investigated. Tensile, compressive, and fracture tests were performed on the matrix and the composites with different ash content. Most composites exhibited improved stiffness, tensile strength, and fracture properties in comparison to the vinylester matrix. From scanning electron microscopic analysis of fracture surfaces, the toughening mechanisms of crack pinning, crack deflection, particle debonding, and localized shear yielding were identified. In addition, the dependence of tensile and compressive modulus and fracture energy toward ash content was adequately fitted by simple models available in the literature. From the results of these models and energy-dispersive X-ray spectroscopy analysis, some interaction between vinylester and ash seemed to exist. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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