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<p>The article presents the results of a study of the development of specific defects (treeings) induced by an electric field in a sample of the pyridinedicarboxamide–polydimethylsiloxane copolymer. The process of defect growth was carried out by creating a sharply nonuniform electric field using a needle–needle electrode system. To analyze the process of treeing channel development in the sample structure, video recordings of the interelectrode space were made, according to which repeated formation and disappearance of electrical defects occurred, despite the effect of the electric field. The time of defect formation ranged from 1 to 4 s; the duration of self-healing of the damaged area of the material ranged from 3 to 12 s. On the basis of analysis of the experimental data, a simplified model of energy exchange in treeing channels was developed, taking into account the movement of gas inside the channel and the elastic properties of the channel walls.</p>

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Investigation of Development Dynamics of Defects Induced by Electric Field in Polysiloxane Sample

  • 期刊论文

  • 发表日期：

    2025年8月2日

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  • A. V. Korzhov,
  • A. V. Prokudin,
  • V. I. Safonov,
  • A. B. Mamazhonov

摘要

The article presents the results of a study of the development of specific defects (treeings) induced by an electric field in a sample of the pyridinedicarboxamide–polydimethylsiloxane copolymer. The process of defect growth was carried out by creating a sharply nonuniform electric field using a needle–needle electrode system. To analyze the process of treeing channel development in the sample structure, video recordings of the interelectrode space were made, according to which repeated formation and disappearance of electrical defects occurred, despite the effect of the electric field. The time of defect formation ranged from 1 to 4 s; the duration of self-healing of the damaged area of the material ranged from 3 to 12 s. On the basis of analysis of the experimental data, a simplified model of energy exchange in treeing channels was developed, taking into account the movement of gas inside the channel and the elastic properties of the channel walls.