侯帅, 展云鹏, 朱闻博, 傅明利, 薛志刚, 陈俊. POE增韧聚丙烯基电缆半导电屏蔽材料导电网络的建立及性能[J]. 高电压技术, 2023, 49(3): 1000-1006. DOI: 10.13336/j.1003-6520.hve.20211790
引用本文: 侯帅, 展云鹏, 朱闻博, 傅明利, 薛志刚, 陈俊. POE增韧聚丙烯基电缆半导电屏蔽材料导电网络的建立及性能[J]. 高电压技术, 2023, 49(3): 1000-1006. DOI: 10.13336/j.1003-6520.hve.20211790
HOU Shuai, ZHAN Yunpeng, ZHU Wenbo, FU Mingli, XUE Zhigang, CHEN Jun. The Formation and Properties of Conductive Network in POE Blended Polypropylene Based Semi-conductive Shielding Material for Cable[J]. High Voltage Engineering, 2023, 49(3): 1000-1006. DOI: 10.13336/j.1003-6520.hve.20211790
Citation: HOU Shuai, ZHAN Yunpeng, ZHU Wenbo, FU Mingli, XUE Zhigang, CHEN Jun. The Formation and Properties of Conductive Network in POE Blended Polypropylene Based Semi-conductive Shielding Material for Cable[J]. High Voltage Engineering, 2023, 49(3): 1000-1006. DOI: 10.13336/j.1003-6520.hve.20211790

POE增韧聚丙烯基电缆半导电屏蔽材料导电网络的建立及性能

The Formation and Properties of Conductive Network in POE Blended Polypropylene Based Semi-conductive Shielding Material for Cable

  • 摘要: 为了探究聚丙烯电缆屏蔽料的性能,以聚丙烯/乙烯–辛烯共聚物弹性体(polypropylene/ethylene-octene copolymer elastomer,PP/POE)为基体树脂,添加碳黑作为导电填料,使用转矩流变仪制备了不同POE比例的半导电屏蔽材料。使用扫描电镜(scanning electron microscope, SEM)观察了碳黑在材料中的分布特征,使用差示扫描量热法(differential scanning calorimetry,DSC)表征了材料的熔融结晶行为,对试样的动态热力学进行了分析,并使用四电极系统测量了试样在不同温度下的体积电阻率。结果表明:POE的添加改变了碳黑的分布情况,使碳黑主要分布在POE中。随着POE质量份数的增加,碳黑网络分布区域更大,但碳黑浓度降低;体积电阻率的正温度系数(positive temperature coefficient,PTC)效应变大。综合来看,PP与POE的质量份数比例为60:40和50:50的试样在兼顾力学性能的同时,具有较为理想的导电性能。

     

    Abstract: In order to investigate the properties of semi-conductive screen material for PP cable, polypropylene/ethylene octene copolymer elastomer (PP/POE) was used as the base material, and carbon black was added to the matrix resin as the conductive filler. The semi-conductive shielding materials with different POE ratios were prepared by a torque rheometer. The distribution of carbon black in the material was observed by scanning electron microscope (SEM), and the crystallization behavior of the material was characterized by differential scanning calorimetry (DSC). Moreover, the thermodynamics of the sample was analyzed, and the volume resistivity at different temperatures was measured by a four-electrode system. The results showed that the addition of POE changed the distribution of carbon black, which was mainly distributed in POE. With the increase of POE content, the distribution area of carbon black network becomes larger, but the concentration of carbon black is lower. The PTC effect of volume resistivity is enhanced. In general, PP and POE with the ratio of 60:40 and 50:50 possess ideal mechanical and electrical properties.

     

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