董冰冰, 孟岩, 葛医博, 武奔. 隔离开关温度检测用可逆变色涂料制备方法及其性能[J]. 高电压技术, 2024, 50(6): 2580-2589. DOI: 10.13336/j.1003-6520.hve.20230086
引用本文: 董冰冰, 孟岩, 葛医博, 武奔. 隔离开关温度检测用可逆变色涂料制备方法及其性能[J]. 高电压技术, 2024, 50(6): 2580-2589. DOI: 10.13336/j.1003-6520.hve.20230086
DONG Bingbing, MENG Yan, GE Yibo, WU Ben. Preparation Method of Reversible Color-changing Coating for Temperature Detection of Disconnect Switches and Its Performance[J]. High Voltage Engineering, 2024, 50(6): 2580-2589. DOI: 10.13336/j.1003-6520.hve.20230086
Citation: DONG Bingbing, MENG Yan, GE Yibo, WU Ben. Preparation Method of Reversible Color-changing Coating for Temperature Detection of Disconnect Switches and Its Performance[J]. High Voltage Engineering, 2024, 50(6): 2580-2589. DOI: 10.13336/j.1003-6520.hve.20230086

隔离开关温度检测用可逆变色涂料制备方法及其性能

Preparation Method of Reversible Color-changing Coating for Temperature Detection of Disconnect Switches and Its Performance

  • 摘要: 隔离开关触头异常发热问题较为突出,影响电网的安全稳定运行。为了及时检测异常发热,提出一种隔离开关温度检测用可逆变色涂料制备方法,并对其性能进行分析研究。采用三组分法以结晶紫内酯为发色剂、双酚A为显色剂、棕榈酸为溶剂制备可逆变色材料,并对其组分质量配比进行优选。结果表明:提高双酚A的质量配比,变色材料颜色加深,变色开始温度和变色结束温度均有所提高。提高棕榈酸的质量配比,变色材料颜色变浅,变色开始温度未见明显变化,而变色结束温度逐渐降低。采用原位聚合法制备变色微胶囊并进行差示扫描量热分析,其发生相变的温度区间与其变色温度范围较为一致,且其热稳定性良好。采用混合搅拌法制备不同配比(持久性就地成型防污闪复合涂料:微胶囊)的变色涂料具有较好的变色性能。各配比变色涂料的水接触角均大于100°,且单位长度沿面闪络电压均大于8.5 kV,具有较好的疏水性能和耐电性能。研究成果可为高温高湿运行环境中的隔离开关热致缺陷在线检测提供方法参考。

     

    Abstract: The problem of abnormal heating of disconnect switch contacts is prominent and affects the safe and stable operation of the power grid. In order to detect abnormal heating in time, a preparation method for reversible color-changing coating is proposed and its performance is analyzed and studied. The reversible color-changing material is prepared by using a three-component method in which crystalline violet lactone is used as the chromogenic agent, bisphenol A as the chromogenic agent, and palmitic acid as the solvent. The optimal composition mass ratio of its components is also determined. The results show that, with the increase of the proportion of BPA, the color of material becomes deep, and the color-changing start temperature and end temperature both increase. With the increase of the proportion of palmitic acid, the color of the material becomes light, and its color-changing start temperature changes inconspicuously, while the end temperature decreases gradually. The color-changing microcapsule is prepared by in-situ polymerization method and subjected to differential scanning calorimetric analysis. Its temperature range of phase change is consistent with the temperature range of color change, and its thermal stability is good. The color-changing coatings with different mass ratios (permanent-room-temperature-vulcanized anti-contamination flashover composite coating : microcapsule) are prepared by the mixing and stirring method, and they have good color-changing performance. The water contact angles of the color-changing coatings with different mass ratios are all greater than 100°, and the flashover voltage values per unit length along the surface are all greater than 8.5 kV, exhibiting good hydrophobic and electrical resistance properties. The research results can provide a reference for online detection of thermally induced defects in disconnect switches in high temperature and high humidity operating environments.

     

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