中国塑料2025，Vol.39Issue(12)：33-38,6.DOI:10.19491/j.issn.1001-9278.2025.12.006
双轴拉伸改性氧化锆/聚丙烯复合介电薄膜的制备与性能研究
Preparation and performance of biaxially oriented modified zirconia/polypropylene composite dielectric films
摘要
Abstract
Nano-zirconia(nano-ZrO2)was surface-grafted with amino groups(NH2)and then melt-blended with polypro-pylene-g-maleic anhydride(PP-g-MAH)and polypropylene(PP)to form composite pellets.These pellets were pro-cessed into dielectric films via casting followed by biaxial orientation.The grafting reaction between the NH2 groups on ZrO2 and the anhydride groups of PP-g-MAH improved the dispersion and compatibility of the nanoparticles within the PP matrix.The resulting NH2-ZrO2/PP-g-MAH/PP composite films exhibited enhanced dielectric,thermal,and me-chanical properties.Specifically,at a test frequency of 1 kHz and with 2.5 wt％NH2-ZrO2 content,the composite film achieved a dielectric constant of 4.46,significantly higher than that of pure PP(2.25),along with high breakdown strength of 492 MV/m and a low dielectric loss of only 0.002 5.These results demonstrated that the applied modifica-tion strategy effectively yielded a composite film with a high dielectric constant and breakdown voltage while significantly suppressing dielectric loss.关键词
氧化锆/聚丙烯/相容剂/介电常数/击穿场强Key words
zirconia/polypropylene/compatibilizer/dielectric constant/breakdown field strength分类
化学化工引用本文复制引用
GUO Jiang,XU Mengyi,HUANG Xiang,HAO Hao,YOU Feng,LI Chenjian,JIANG Xueliang..双轴拉伸改性氧化锆/聚丙烯复合介电薄膜的制备与性能研究[J].中国塑料,2025,39(12):33-38,6.基金项目
2023年湖北省科技计划立项项目(2023BAB001) （2023BAB001）
