| 不同场强下新型绝缘聚合物的变色特性及其介电特性 |
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| 引用本文： | 聂永杰,景钰,张萌,陈昊鹏,赵现平,赵腾飞,项恩新,王科,鲁广昊,朱远惟. 不同场强下新型绝缘聚合物的变色特性及其介电特性[J]. 中国电力, 2021, 54(11): 144-152. DOI: 10.11930/j.issn.1004-9649.202106016 |
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| 作者姓名： | 聂永杰 景钰 张萌 陈昊鹏 赵现平 赵腾飞 项恩新 王科 鲁广昊 朱远惟 |
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| 作者单位： | 1. 云南电网有限责任公司电力科学研究院,云南 昆明 650217;2. 国网陕西省电力公司经济技术研究院,陕西 西安 710075;3. 西安交通大学 电力设备和电气绝缘及前沿科学技术研究国家重点实验室,陕西 西安 710049 |
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| 基金项目： | 中国南方电网科技项目(YNKJXM20190717)；国家自然科学基金青年基金资助项目(51907148) |
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| 摘 要： | 为了依靠绝缘材料在电场下的颜色变化判断电力设备带电状态，制备了等规/无规聚（3-己基噻吩）（poly(3-hexylthiophene)，P3HT）共混薄膜。研究发现，等规P3HT纳米微晶在共混薄膜顶部均匀分布。随无规P3HT含量的上升，共混薄膜沿厚度方向表现出更好的绝缘性能。在无规P3HT含量为95%时，共混薄膜的工频介电常数为5.86，电阻率为3.2 T Ω·cm，直流击穿场强达到113 kV/mm。通过空间电荷积累光谱发现，当电场强度大于40 kV/mm时，电荷主要积累在绝缘的无规P3HT中，且共混薄膜吸收光谱450 nm处峰强度随电场强度的增加而升高，实现了空间电荷驱动的绝缘体系电致变色，为电力设备绝缘带电状态检测提供了新方法。
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| 关 键 词： | 高电压 电致变色 空间电荷 绝缘 聚（3-己基噻吩） |
| 收稿时间： | 2021-06-16 |
| 修稿时间： | 2021-07-21 |
Electrochromic and Dielectric Characteristics of Advanced Insulating Polymer under Various Electric Fields |
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| NIE Yongjie,JING Yu,ZHANG Meng,CHEN Haopeng,ZHAO Xianping,ZHAO Tengfei,XIANG Enxin,WANG Ke,LU Guanghao,ZHU Yuanwei. Electrochromic and Dielectric Characteristics of Advanced Insulating Polymer under Various Electric Fields[J]. Electric Power, 2021, 54(11): 144-152. DOI: 10.11930/j.issn.1004-9649.202106016 |
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| Authors: | NIE Yongjie JING Yu ZHANG Meng CHEN Haopeng ZHAO Xianping ZHAO Tengfei XIANG Enxin WANG Ke LU Guanghao ZHU Yuanwei |
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| Affiliation: | 1. Electric Power Research Institute, Yunnan Power Gird Co., Ltd., Kunming 650217, China;2. Economic and Technological Research Institute of State Grid Shaanxi Electric Power Company, Xi'an 710075, China;3. State Key Laboratory of Electrical Insulation and Power Equipment and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | In order to identify the charged states of power equipment through electrochromism of insulating materials, a regular/irregular poly(3-hexylthiophene) (reg-P3HT/irreg-P3HT) blend film is prepared. The experiment study shows that the reg-P3HT is evenly distributed as nano-scale crystallite morphology on top of the blend film. As the content of irreg-P3HT increases, the blend film shows better insulating performance in the direction of film thickness. When the content of irreg-P3HT reaches 95%, the blend film has a power frequency dielectric constant of 5.86, a volume resistivity of 3.2×1012 Ω·cm, and a DC breakdown strength of 113 kV/mm. By applying charge accumulation spectroscopy, it is found that when the field strength reaches over 40 kV/mm, the space charges mainly accumulate in irreg-P3HT, and the blend film’s absorption intensity increases with the field strength at 450 nm, triggering the electrochromism of the insulating film. This work provides a new path for testing the charged states of insulating materials of power equipment. |
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| Keywords: | high voltage electrochromism space charge insulation poly(3-hexylthiophene) |
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