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首页> 外文期刊>Arabian Journal for Science and Engineering >Life Estimation and Investigation of Dielectric Strength and Siloxane Backbone of High Voltage Silicone Rubber Composites Under Accelerated Multistress Conditions
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Life Estimation and Investigation of Dielectric Strength and Siloxane Backbone of High Voltage Silicone Rubber Composites Under Accelerated Multistress Conditions

机译：高压硅橡胶复合材料介电强度和硅氧烷骨架的寿命估算与调查加速多态条件

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摘要

Room-temperature-vulcanized silicone rubber (RTV-SiR) is an excellent polymer for the coatings of high voltage outdoor insulators. However, like other polymers it also degrades by environmental stresses and lessens its service life. Silica-based composites may improve this behavior. To investigate the effect of multiple environmental stresses such as acid rain, heat, UV radiations, salt fog, etc., on silica-based composites, we prepared a sample neat SiR, two SiR nano-composites (5% and 2.5% nano-silica loading), an SiR micro-composite (15% micro-silica loading) and a hybrid composites (2% nano + 10% micro-silica loading). The prepared samples are subjected to accelerated multistress environment for a long term. Dielectric strength, leakage current and siloxane backbone are analyzed periodically during entire aging period. Composites showed improved characteristics and service life. Silicone rubber nano-composite with 5% nano-silica loading (SNC-5) showed longest estimated service life of 29 lab years in comparison with 19.8 lab years of neat silicone rubber. Similarly, after aging 17kV/mm of dielectric of SNC-5 was highest among the all samples. Siloxane backbone also showed improved intactness in the case of SNC-5.
机译：室温硫化硅橡胶（RTV-SIR）是高压室外绝缘体涂层的优异聚合物。然而，与其他聚合物一样，它也会因环境压力而劣化，并减少其使用寿命。基于二氧化硅的复合材料可以改善这种行为。为了探讨多种环境应力，如酸雨，热，紫外线辐射，盐雾等，在二氧化硅基复合材料上，我们制备了样品整洁的SIR，两个SIR纳米复合材料（5％和2.5％纳米 - 二氧化硅加载），SiR微复合物（15％微二氧化硅加载）和杂化复合材料（2％纳米+ 10％微二氧化硅负载）。制备的样品长期进行加速的多级环境。在整个老化期间定期分析介电强度，漏电流和硅氧烷骨架。复合材料显示出改善的特性和使用寿命。硅橡胶纳米复合材料，5％纳米二氧化硅加载（SNC-5）显示了与19.8实验室硅橡胶的19.8年实验室相比，估计了最长的估计使用寿命。类似地，在所有样品中老化17kV / mm的SNC-5的介质之后。硅氧烷骨架还显示出在SNC-5的情况下改善的完整性。

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  • 来源
    《Arabian Journal for Science and Engineering》 |2019年第8期|7149-7158|共10页
  • 作者

    Khattak Abraiz; Amin Muhammad; Khan Adam; Imran Kashif;

  • 作者单位

    NUST Dept Elect Power Engn US Pakistan Ctr Adv Studies Energy Sect H-12 Islamabad 44000 Pakistan;

    Ghulam Ishaq Khan Inst GIKI Engn Sci & Technol Dept Elect Engn Topi Pakistan;

    Ton Duc Thang Univ Dept Management Sci & Technol Dev Ho Chi Minh City Vietnam|Ton Duc Thang Univ Fac Elect & Elect Engn Ho Chi Minh City Vietnam;

    NUST Dept Elect Power Engn US Pakistan Ctr Adv Studies Energy Sect H-12 Islamabad 44000 Pakistan;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    High voltage; Aging; Polymeric insulators; Composites; Silicone rubber;

    机译：高电压;老化;聚合物绝缘体;复合材料;硅橡胶;

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