不同拉伸方式引起BOPP薄膜的结构特征与绝缘介电性能  

Structural characteristics and electrical insulating properties of BOPP films based on different stretching modes

作　　者：汪鹏 姚成 刘刚 蔡希鹏 贾磊 王铠 陈龙 WANG Peng;YAO Cheng;LIU Gang;CAI Xipeng;JIA Lei;WANG Kai;CHEN Long(Shenzhen Power Supply Bureau Co,Ltd,Shenzhen 518001,China;China Southern Power Grid Research Institute Co,Ltd,Guangzhou 510663,China)

机构地区：[1]深圳供电局有限公司,广东深圳518001 [2]南方电网科学研究院有限责任公司,广州510663

出　　处：《中国塑料》2024年第3期54-58,共5页China Plastics

摘　　要：采用不同拉伸方式以及改变双向拉伸聚丙烯(BOPP)薄膜厚度,调节伸直链晶含量(厚晶片)、纤维化形貌和取向形态,并考察这些结构因素对介电性能的作用规律。结果表明,热稳定的伸直链晶和纤维网络的结构各向同性有利于提高击穿场强、降低介电损耗;对电介质薄膜加工-结构-性能关系的深入理解能够为设计、开发高品质电容膜产品提供参考。In this work,simultaneous biaxial drawing and sequential biaxial drawing were chosen as two stretching modes to adjust the thickness,extended chain crystal content,fibrillar morphology,and orientation texture of BOPP films,and the working rules of these structural issues on their electrical insulating properties were investigated.The results indicat⁃ed that a thick lamellar structure with a good thermal stability and an isotropous fibrillated network facilitated an improve⁃ment in the breakdown strength and a reduction in the dielectric loss.These results are advantageous to a good under⁃standing on the processing⁃structure⁃property relation of polymer film dielectric.

关 键 词：双向拉伸聚丙烯 伸直链晶 纤维化形貌 击穿场强 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]