Damping properties of fly ash/epoxy composites

Jian Gu, Gaohui Wu, Xiao Zhao

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    Jian Gu, Gaohui Wu, and Xiao Zhao, Damping properties of fly ash/epoxy composites, J. Univ. Sci. Technol. Beijing , 15(2008), No. 4, pp.509-513. https://dx.doi.org/10.1016/S1005-8850(08)60096-1
    Jian Gu, Gaohui Wu, and Xiao Zhao, Damping properties of fly ash/epoxy composites, J. Univ. Sci. Technol. Beijing , 15(2008), No. 4, pp.509-513. https://dx.doi.org/10.1016/S1005-8850(08)60096-1
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    Damping properties of fly ash/epoxy composites

    • School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

      通信作者:

      Jian Gu E-mail: gujian9804@163.com

    中文摘要

    An inexpensive fly ash (FA), which is from a waste product, was employed to prepare fly ash/epoxy composites. The purpose of this study is to characterize the contributions of matrix viscoelasticity, hollow structure characteristic (porosity), and filler/matrix interface friction to the high vibration damping capacity of such composites. The damping properties of the composites were investigated in the temperature range of-40 to 150℃ and in the frequency range of 10 to 800 Hz by using a tension-compression mode. The results indicate that the peak value of damping loss factor (tan3) for the fly ash/epoxy composites can reach 0.70-0.90 in test specification, and the attenuation of damping loss factor is inconspicuous with increasing frequency. In addition, scanning electron microscope (SEM) was used to observe the morphology of the fly ash as well as its distribution in the matrix, which will help to analyze the effect of fly ash on the damping properties of the fly ash/epoxy composites.

     

    Materials

    Damping properties of fly ash/epoxy composites

    Author Affilications

      • School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

    • Received: 13 September 2006;
    An inexpensive fly ash (FA), which is from a waste product, was employed to prepare fly ash/epoxy composites. The purpose of this study is to characterize the contributions of matrix viscoelasticity, hollow structure characteristic (porosity), and filler/matrix interface friction to the high vibration damping capacity of such composites. The damping properties of the composites were investigated in the temperature range of-40 to 150℃ and in the frequency range of 10 to 800 Hz by using a tension-compression mode. The results indicate that the peak value of damping loss factor (tan3) for the fly ash/epoxy composites can reach 0.70-0.90 in test specification, and the attenuation of damping loss factor is inconspicuous with increasing frequency. In addition, scanning electron microscope (SEM) was used to observe the morphology of the fly ash as well as its distribution in the matrix, which will help to analyze the effect of fly ash on the damping properties of the fly ash/epoxy composites.

     

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