【摘要】 通过X -射线衍射方法研究了110kV交联聚乙烯绝缘电缆绝缘层的结晶结构。发现电缆工艺中的热过程和热历史会造成超高压交联电缆绝缘层各部分结晶形态分布不均,中层聚集态结构均匀性较好,内层外层结晶程度低于中层。热应力改变了晶区中的晶面间距,显示出绝缘径向应力以张力为主更多还原

【Abstract】 The X-ray diffraction is used to research the crystalline structure of the XLPE insulaˉtion of110kV Power Cable.The heating process and thermal history could result in the different crystalline morphology distribution in the different layers of the high voltage power cable insulaˉtion.The morphology structures in the middle layer are of better uniform.The crystallinity of the inner and outer layer is lower than that of the middle one.Thermal stress changes the inˉterplanar distance in the crystal region which shows the radial stress in the insulation is tensile mainly.更多还原