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Aging performance investigation and improvement of modified polyurethane composites for composite overhead transmission line towers

机译：复合架空输电线塔改性聚氨酯复合材料的老化性能调查与改进

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摘要

Fiber reinforced plastic has the characteristics of light weight, high strength, good aging performance and strong insulation performance, so the composite overhead transmission line tower may become a substitute for the traditional iron tower in the future. At present, the researches on the composite transmission tower mainly focused on the electrical properties, few on the aging performance, which is an unknown influence on the transmission line with composite transmission towers. In this paper, a 5000 h multi-factor accelerated aging test was used to investigate the aging performance of modified polyurethane (PU) composites for composite transmission towers. The test periodically simulated the environment of high voltage, rainfall, humidity, alternating high and low temperatures, ultraviolet and salt fog. The results show that pultrusion process PU composites are more suitable to be used as the materials of composite towers because of its higher bending modulus. Then, a research on PU composites aging performance improvement scheme was carried out by another multi-factor accelerated aging test. The results show that the mixture of ultraviolet absorber and ultraviolet stabilizer is helpful to improve the aging performance of PU composites, and the addition of 0.275wt% of the total amount with a ratio of 1:1 is a viable scheme.
机译：纤维增强塑料具有重量轻，强度高，老化性能良好的特点，绝缘性能良好，因此复合架空传输线塔可能成为未来传统铁塔的替代品。目前，对复合传动塔的研究主要集中在电学特性上，几乎没有老化性能，这对具有复合传动塔的传输线是一种未知的影响。本文采用5000h多因素加速老化试验来研究复合传动塔的改性聚氨酯（PU）复合材料的老化性能。该测试定期模拟高压，降雨，湿度，交替的高和低温，紫外线和盐雾的环境。结果表明，由于其较高的弯曲模量，拉挤型工艺PU复合材料更适合用作复合塔的材料。然后，通过另一种多因素加速老化试验进行了对PU复合材料老化性能改善方案的研究。结果表明，紫外线吸收剂和紫外线稳定剂的混合物有助于改善PU复合材料的老化性能，并且添加0.275wt％的总量为1：1是可行的方案。

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  • 来源
    《Electric power systems research》 |2021年第2期|106880.1-106880.7|共7页
  • 作者

    Gao Jiachen; Wang Linong; Fang Yaqi; Huang Daochun; Ma Yayun; Song Bin; Wang Lingyu;

  • 作者单位

    Wuhan Univ Sch Elect Engn & Automat Wuhan 430072 Peoples R China;

    Wuhan Univ Sch Elect Engn & Automat Wuhan 430072 Peoples R China;

    Hubei Univ Technol Sch Elect & Elect Engn Wuhan 430068 Peoples R China;

    Wuhan Univ Sch Elect Engn & Automat Wuhan 430072 Peoples R China;

    State Grid Jibei Elect Power Co Ltd Tangshan Power Supply Co Tangshan 063000 Peoples R China;

    Wuhan Univ Sch Elect Engn & Automat Wuhan 430072 Peoples R China;

    Wuhan Univ Sch Elect Engn & Automat Wuhan 430072 Peoples R China;

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

    Accelerated aging test; Aging performance; Composite transmission towers; PU composites;

    机译：加速老化试验;老化性能;复合传动塔;PU复合材料;

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