聊城大学学报（自然科学版）2024，Vol.37Issue(4)：103-110,8.DOI:10.19728/j.issn1672-6634.2024030005
三维钛酸铜钙/环氧树脂-氮化硼复合电介质的介电松弛行为研究
Dielectric Relaxation Behavior of Three-Dimensional Copper Calcium Titanate/Epoxy-Boron Nitride Composite Dielectrics
摘要
Abstract
Three-dimensional calcium copper titanate(3D CCTO)ceramic network was constructed by sol-gel method using cleanroom wiper as template,and then epoxy-boron nitride nanosheets(EP-BNNS)with different proportions of BNNS were reversely introduced into the 3D CCTO ceramic network to prepare 3D CCTO/EP-BNNS composite dielectric materials.The effects of 3D CCTO and BNNS on the dielectric re-laxation of composite dielectric materials at different temperatures were studied by means of dielectric modulus.The results showed that when EP reached saturation,the mass and volume fraction of 3D CCTO ceramic network were 34%,and 9.2%,respectively,and the good 3D network structure of ceramics was remained simultaneously.The dielectric constant of 3D CCTO/EP-1.0BNNS composite dielectric material was as high as 25.8 at 1 kHz and the dielectric loss was as low as 0.032,being 170%and 89%of the tradi-tional CCTO powder filled CCTO/EP system,respectively.3D CCTO and BNNS achieved a good syner-gistic reinforcement effect.The isothermal dielectric relaxation spectra showed that the addition of 3D CC-TO can significantly improve the polarization of the dielectrics,while the addition of BNNS can distinctly restrain the carrier transition and reduce the dielectric loss.关键词
钛酸铜钙/氮化硼/电介质/介电松弛/介电模量Key words
calcium copper titanate/boron nitride/dielectrics/relaxation/dielectric modulus分类
通用工业技术引用本文复制引用
张冬梅,薛文清,杨永志,郭文彬,杨硕,李雨凡,李玉超..三维钛酸铜钙/环氧树脂-氮化硼复合电介质的介电松弛行为研究[J].聊城大学学报（自然科学版）,2024,37(4):103-110,8.基金项目
国家自然科学基金项目(52177020) （52177020）
聊城大学大学生创新创业训练计划项目(CXCY2022184,CXCY2021109)资助 （CXCY2022184,CXCY2021109）
