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<p>This study fabricated composite materials consisting of a periodic array of a conductive material in a dielectric and evaluated the effects of increasing the amount of the conductive material in the mixture and the direction of the array on the material properties. The dielectric material was paraffin, and the conductive material was carbon powder. The electrical properties of the materials are resistance (electrical conductivity) and capacitance. An open-top mold capable of 2.0-MHz ultrasonic input was created to create the composite materials, and composite materials with an array structure were produced by solidification while imparting an array structure. A self-made probe was used to conduct current through the material, and both resistance and capacitance were evaluated by the time variation of the current. Due to the direction of current flow along the array, the current for 0.30&#xa0;g of the mixture direction was higher than that for 0.60&#xa0;g of the carbon powder mixture not under the array. Increases in the current and time constant with increasing mixture amount were observed. Resistance and capacitance were obtained with less reinforcement than simple dispersion by imparting an array structure in composite manufacturing.</p>

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Effects of Periodic Alignment Produced by Ultrasound on Resistance and Capacitance of Composite Material

  • 期刊论文

  • 发表日期：

    2025年4月16日

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  • Tomoaki Kyoden,
  • Hideaki Yoshioka,
  • Mine Kurashima,
  • Noboru Momose,
  • Hiroki Ishida

摘要

This study fabricated composite materials consisting of a periodic array of a conductive material in a dielectric and evaluated the effects of increasing the amount of the conductive material in the mixture and the direction of the array on the material properties. The dielectric material was paraffin, and the conductive material was carbon powder. The electrical properties of the materials are resistance (electrical conductivity) and capacitance. An open-top mold capable of 2.0-MHz ultrasonic input was created to create the composite materials, and composite materials with an array structure were produced by solidification while imparting an array structure. A self-made probe was used to conduct current through the material, and both resistance and capacitance were evaluated by the time variation of the current. Due to the direction of current flow along the array, the current for 0.30 g of the mixture direction was higher than that for 0.60 g of the carbon powder mixture not under the array. Increases in the current and time constant with increasing mixture amount were observed. Resistance and capacitance were obtained with less reinforcement than simple dispersion by imparting an array structure in composite manufacturing.