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A novel preparation of resin-based electrical contact material impregnated with sulfonated graphene

机译：浸渍磺化石墨烯树脂基电触头材料的新颖制剂

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摘要

A novel type of resin-based electrical contact material (RECM) was prepared for the first time via the second curing of a sulfonated graphene/waterborne epoxy resin after pore formation. The carrying-current wear behavior of the RECMs was tested on a durability test bed of a HMC-2500 type electric power tool, and microstructural characterization of the RECMs surface was carried out using AFM, SEM, TEM and XPS. The results show that the carrying-current wear rate of the RECMs impregnated with sulfonated graphene was approximately 56% of that of the RECMs not impregnated with sulfonated graphene, and it was also lower than that of the original carbon brush (widely used in the market). Moreover, AFM analysis indicated that the introduction of sulfonated graphene can significantly improve the surface hardness and toughness of RECMs. It was also found that sulfonated graphene could restrain the stress growth in situ in the micro-crack region, which contributes to the formation of a slight "fish scale" friction film on the wear surface during the wear process. Furthermore, it can effectively improve the integrity of the contact surface between the friction pairs and reduce any abnormal wear and resist arc erosion wear. The research results provide guidance and a theoretical basis for the research and design of high performance electrical contact materials.
机译：在孔形成后，首次通过磺化石墨烯/水性环氧树脂的第二固化制备新型的基于树脂的电接触材料（RECM）。在HMC-2500型电动工具的耐久性试验床上测试RECMS的承载电流磨损行为，使用AFM，SEM，TEM和XPS进行RECMS表面的微观结构表征。结果表明，浸渍磺化石墨烯的抗填种的携带电流磨损率约为未浸渍磺化石墨烯的抗填种的56％，并且它也低于原始碳刷（广泛用于市场的填充物） ）。此外，AFM分析表明，磺化石墨烯的引入可以显着改善RECMS的表面硬度和韧性。还发现磺化石墨烯可以在微裂纹区域中抑制原位的应力生长，这有助于在磨损过程中形成磨损表面上的轻微“鱼鳞”摩擦膜。此外，它可以有效地改善摩擦对之间接触表面的完整性，并减少任何异常磨损和抵抗电弧腐蚀磨损。研究结果为高性能电接触材料的研究和设计提供了指导和理论依据。

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  • 来源
    《RSC Advances》 |2017年第69期|共6页
  • 作者

    Song Tenghui; Tu Chuanjun; Feng Pengyang; Wu Mingzai; Chen Gang; Wang Weidong;

  • 作者单位

    Hunan Univ Coll Mat Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Mat Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Mat Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Anhui Univ Sch Phys &

    Mat Sci Hefei 230601 Anhui Peoples R China;

    Hunan Univ Coll Mat Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    China Acad Railway Sci R&

    D Ctr Beijing 100081 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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