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首页> 外文期刊>Dielectrics and Electrical Insulation, IEEE Transactions on >Effects of atmospheric pressure on tracking failure of gamma-ray irradiated polymer insulating materials
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Effects of atmospheric pressure on tracking failure of gamma-ray irradiated polymer insulating materials

机译：大气压力对γ射线辐照聚合物绝缘材料跟踪失效的影响

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摘要

With the increasing application of electric and electronic devices in space and nuclear power stations, the polymer insulation materials are inevitably exposed to various kinds of environments. As technology advances, increasing demands on the reliable operation under various operating and environmental conditions are made on materials and components. Therefore, it is important to investigate the influence of radiation on polymeric insulating materials used under the combined environments. This paper describes the effects of atmospheric pressure and gammaray irradiation on tracking failure of polybutylene naphthalate (PBN), polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) by applying a DC pulse voltage. PBN, PET and PBT were irradiated in air up to 100 kGy and then up to 1000 kGy with a dose rate of 10 kGy/h by using a 60 Co gamma-source. The effects of total dose of irradiation and atmospheric pressure on the time to tracking failure and discharge quantity were discussed. Obtained results show that, with increasing the total dose, the time to tracking failure increased with PBN and PET, but decreased with PBT. With decreasing the atmospheric pressure, the time to tracking failure increased with PBN, PET and PBT. While increasing the total dose, the discharge quantity decreased with PBN and PET, but increased with PBT. With decreasing the atmospheric pressure, the discharge quantity increased with PBN and PET, but decreased with PBT. The experimental results suggest that the chemical structure of the polymeric insulating materials plays a main role in the result of radiation reaction, which is related to cross-linking and degradation reaction.
机译：随着电气和电子设备在太空和核电站中的越来越多的应用，聚合物绝缘材料不可避免地暴露于各种环境中。随着技术的进步，对材料和组件在各种操作和环境条件下对可靠操作的要求越来越高。因此，重要的是要研究辐射对组合环境下使用的聚合物绝缘材料的影响。本文通过施加直流脉冲电压描述了大气压和伽马射线辐照对聚萘二甲酸丁二酯（PBN），聚对苯二甲酸乙二酯（PET）和聚对苯二甲酸丁二酯（PBT）的跟踪失败的影响。通过使用60 Coγ源，以10 kGy / h的剂量率在空气中辐照PBN，PET和PBT，最高100 kGy，然后最高1000 kGy。讨论了总辐照剂量和大气压力对跟踪失效时间和放电量的影响。所得结果表明，随着总剂量的增加，追踪失败的时间随着PBN和PET而增加，而随着PBT而减少。随着大气压的降低，使用PBN，PET和PBT跟踪故障的时间会增加。当增加总剂量时，PBN和PET的排出量减少，而PBT增加。随着大气压的降低，PBN和PET的排放量增加，而PBT的排放量减少。实验结果表明，聚合物绝缘材料的化学结构在辐射反应的结果中起主要作用，这与交联和降解反应有关。

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