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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：加速硅橡胶复合材料在加速多应力条件下的寿命估算和介电强度和硅氧烷骨架的研究

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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）是用于高压户外绝缘子涂料的优良聚合物。但是，与其他聚合物一样，它也会因环境压力而降解并缩短其使用寿命。二氧化硅基复合材料可以改善这种行为。为了研究酸雨，热，紫外线，盐雾等多种环境应力对二氧化硅基复合材料的影响，我们制备了纯SiR，两种SiR纳米复合材料（5％和2.5％二氧化硅负载），SiR微复合材料（微硅负载量为15％）和杂化复合材料（纳米硅负载量为2％+微硅负载量为10％）。制备的样品长期处于加速多应力环境。在整个老化期间，定期分析介电强度，泄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。纳米硅橡胶含量为5％（SNC-5）的硅橡胶纳米复合材料显示的最长估计使用寿命为29个实验室年，而纯硅橡胶则为19.8个实验室年。同样，老化后，所有样品中SNC-5的电介质最高为17kV / mm。在SNC-5的情况下，硅氧烷骨架也具有改善的完整性。

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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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