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Volume 35 Issue 1
Jan 2021
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Chinese Journal of High Pressure Physics  > 2021  >  35(1): 011301.
LUO Guoqiang, HUANG Zhihong, ZHANG Ruizhi, SUN Yi, ZHANG Jian, SHEN Qiang. Sound Velocity and Shock Response Behavior of Cu/PMMA Composites[J]. Chinese Journal of High Pressure Physics, 2021, 35(1): 011301. doi: 10.11858/gywlxb.20200599
Citation: LUO Guoqiang, HUANG Zhihong, ZHANG Ruizhi, SUN Yi, ZHANG Jian, SHEN Qiang. Sound Velocity and Shock Response Behavior of Cu/PMMA Composites[J]. Chinese Journal of High Pressure Physics, 2021, 35(1): 011301. doi: 10.11858/gywlxb.20200599
shu

Sound Velocity and Shock Response Behavior of Cu/PMMA Composites

doi: 10.11858/gywlxb.20200599

  • State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China

  • Received Date: 31 Jul 2020
  • Rev Recd Date: 07 Aug 2020
  • Publish Date: 25 Nov 2020
    Abstract
  • In our work, a series of Cu/PMMA composites with different components were prepared using the melting blending method, in which particles are randomly dispersed in PMMA matrix without agglomeration. Then again study was conducted on the Cu particles content’s influence on the sound velocity and impact compression behavior of PMMA matrix. The ultrasonic test results show that with Cu particles content increasing, the sound wave attenuation makes a slow decreasing tendency of transversal and longitudinal sound velocities in material, which in turn decreases its bulk sound velocity. Based on the plate impact test, the shock wave velocity-particle velocity (D-u) equations of Cu/PMMA composites in the impact pressure range of 1.1–6.0 GPa were obtained. Owing to the increase of the acoustic impedance of Cu/PMMA composites, Hugoniot parameter shows an increase while the fitted zero-pressure sound velocity tends to decrease, which turns to be consistent with the variation of bulk sound velocity at atmospheric pressure. In addition, pressure-particle velocity (p-u) curves of the composites were discussed on the basis of the p-u model. And a reliable method was proposed to predict pressure-density (p-$\;\rho $) relationship of polymer matrix composites filled with metal particles.

     

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