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The deterioration mechanism of the mechanical and electrical properties of insulating cardboard under mechanical force
编号：612 访问权限：仅限参会人 更新：2022-05-22 17:54:59 浏览：262次 张贴报告

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摘要
In this paper, we constructed the cellulose model of insulating cardboard, studied the changing process of the micro performance index of insulating paper under the action of mechanical force, and designed the mechanical force aging experiment under different aging times, and studied the mechanical properties, electrical properties, and conducted micro morphology observation of the aging sample. Simulation results showed that mechanical force can aggravate the movement of insulating cardboard fiber chain and cause decreased cellulose stability. The measurement results show that among mechanical properties, the degree of polymerization of insulating cardboard was decreased; among electrical properties, the discharge inception voltage of insulating cardboard after aging decreased, and the discharge amount at a similar external voltage increased. SEM observation of aging samples revealed that mechanical forces induced fiber refinement, bifurcation, and fracture on insulating cardboard surfaces. This paper expounds the degradation mechanism of the insulating paper properties from macro perspective and micro-prospective, which provides a reliable basis and data support for the subsequent insulation ability judgment of the insulating cardboard.
关键词
insulating cardboard; mechanical force aging; molecular simulation; partial discharge;
报告人
LiZihao
Shandong University

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重要日期

  • 会议日期

    05月27日

    2022

    至

    05月29日

    2022

  • 02月28日 2022

    初稿截稿日期

  • 05月29日 2022

    注册截止日期

  • 06月22日 2022

    报告提交截止日期

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IEEE Beijing Section
China Electrotechnical Society
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