绝缘母料加工温度对高压直流电缆绝缘料性能的影响研究

Influence of Processing Temperature of Master-batch on Properties of HVDC Cable Insulation

为了研究绝缘母料加工温度对高压直流电缆绝缘料性能的影响,选用3种加工温度制备绝缘母料,并对采用3种绝缘母料制备的直流电缆绝缘料性能进行了研究。先开展洁净度检测,再通过全反射红外光谱分析了洁净度检测出的晶点的化学键结构,最后对比了3种直流电缆绝缘料的电气性能和力学性能。结果表明:采用加工温度过高的绝缘母料的直流电缆绝缘料中有更多的晶点,且部分晶点为淡黄色;与半透明的晶点相比,淡黄色晶点的红外光谱上并未出现较强的吸收峰,但过高温对直流电缆绝缘料的电气性能有较大的负面影响,而对力学性能的影响较小。

In order to research the influence of processing temperature of master-batch on the properties of HVDC cable insulation,three kinds of master-batch were prepared at different processing temperatures,and then the insulating properties of HVDC cable insulation manufactured by the master-batch were studied.Impurity detection was carried out at first,and then the chemical structure of crystal points detected by impurity detection was analyzed by attenuated total reflectance infrared spectroscopy(ATR-IR).At last,the electrical and mechanical properties of three HVDC cable insulation were compared.The results show that there are more crystal points detected in the HVDC cable insulation prepared by the master-batch under an excessive processing temperature,and part crystal points are light yellow.Compared with semitransparent crystal points,there is no strong absorption peaks in the infrared spectra of light yellow crystal points,but the excessive processing temperature has a greater negative effect on the electrical properties of HVDC cable insulation,while has a smaller effect on its mechanical properties.