Article(id=1304921795417633651, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304921686403474081, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2026.06.005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1760889600000, receivedDateStr=2025-10-20, revisedDate=1765728000000, revisedDateStr=2025-12-15, acceptedDate=null, acceptedDateStr=null, onlineDate=1789047200301, onlineDateStr=2026-09-10, pubDate=1781884800000, pubDateStr=2026-06-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789047200301, onlineIssueDateStr=2026-09-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789047200301, creator=13701087609, updateTime=1789047200301, updator=13701087609, issue=Issue{id=1304921686403474081, tenantId=1146029695717560320, journalId=1149653034449285133, year='2026', volume='59', issue='6', pageStart='1', pageEnd='188', issueExtLink='null', onlineDate='null', pubDate='1781884800000', pubDateStr='2026-06-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789047174311, creator='13701087609', updateTime=1789118019323, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305218831971021057, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304921686403474081, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305218831971021058, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304921686403474081, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=45, endPage=55, ext={EN=ArticleExt(id=1304921795585405812, articleId=1304921795417633651, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Advances in mechanism of high-frequency dielectric properties of polyimides, columnId=null, journalTitle=Insulating Materials, columnName=null, runingTitle=null, highlight=null, articleAbstract=
With the rapid progress of high-speed communication as well as millimeter-wave and sub-terahertz (sub-THz) technologies, polymeric insulating materials with low dielectric constant (Dk), low dielectric dissipation factor (Df), and tunable molecular structures are increasingly required in the tens-to-hundreds of GHz range. In recent years, researches on the high-frequency dielectric properties of aromatic and fluorinated polyimides (PIs) have expanded from simple parameter reporting to multiple perspectives, including polarization mechanism analysis, molecular structure control, humidity dependence, and correlations with optical properties. This review provided a systematic overview of the dielectric behavior of PIs above 10 GHz, with a focus on the dominant frequency regimes of dipolar and electronic polarizations, the influence of humidity on Dk and Df, and the modulating effects of fluorine content, free volume, and polar functional group fraction on dielectric dispersion. While ensuring the thermal stability, chemical resistance, and mechanical reliability, the review further summarized molecular design strategies for reducing Dk and Df, and proposed future directions for material optimization toward millimeter-wave and sub-THz applications.
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随着高速通信技术的演进以及毫米波与亚太赫兹通信的快速发展,在数十至数百GHz频段内,对介电常数(Dk)低、介电损耗因子(Df)小且具有结构可设计性的高分子绝缘材料提出了新的要求。近年来,围绕芳香族与含氟聚酰亚胺(PI)的高频介电性能研究,相关工作已由单一介电参数的数值报道,逐步拓展至极化机制解析、分子结构调控、湿度响应评价以及光学参数关联等多个层面。本文系统综述了PI介电行为的最新研究进展,重点讨论偶极极化与电子极化机制及湿度因素对Dk与Df的影响规律,并分析含氟结构、自由体积以及极性基团比例对介电弥散特性的调控作用。在保持耐热性、化学稳定性与力学性能的前提下,归纳了降低Dk与Df的分子设计策略,并对未来介电材料的结构优化方向进行了展望。
, authors=刘浩男, 安藤慎治, authorsList=刘浩男, 安藤慎治, authorCompany=null, correspAuthors=null, authorNote=
刘浩男(1994-),男(汉族),山西太原人,助理教授,主要从事聚酰亚胺的高频介电和高压光学性质的研究。
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ACS Applied Polymer Materials,
2025,
7(21):14371-14381., articleTitle=Extremely low humidity and frequency dependence of dielectric properties of highly fluorinated polyimides in the 10-330 GHz range, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1304921920894431448, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, xref=null, ext=[AuthorCompanyExt(id=1304921920902820057, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, companyId=1304921920894431448, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Department of Chemical Science and Engineering, Institute of Science Tokyo, Tokyo 1528552, Japan), AuthorCompanyExt(id=1304921920911208666, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, companyId=1304921920894431448, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=东京科学大学 应用化学系,日本 东京 1528552)])], figs=[ArticleFig(id=1304921922412769523, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.1, caption=
Frequency dependence of Dk and Df[3], figureFileSmall=CJaIg8qgrvmowcbYcKt2nw==, figureFileBig=OXixatXsllC0CPeqjqpNvA==, tableContent=null), ArticleFig(id=1304921922475684084, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图1, caption=
Dk和Df随频率的变化[3], figureFileSmall=CJaIg8qgrvmowcbYcKt2nw==, figureFileBig=OXixatXsllC0CPeqjqpNvA==, tableContent=null), ArticleFig(id=1304921922555375861, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.2, caption=
Some dianhydrides used for low dielectric PI, figureFileSmall=EvaVanBDP46hN7xbeeWKnw==, figureFileBig=muddWKf50h+GaXvHSADO2g==, tableContent=null), ArticleFig(id=1304921922614096118, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图2, caption=
一些用于低介电PI的二酐单体, figureFileSmall=EvaVanBDP46hN7xbeeWKnw==, figureFileBig=muddWKf50h+GaXvHSADO2g==, tableContent=null), ArticleFig(id=1304921922677010679, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.3, caption=
Some diamines used for low dielectric PI, figureFileSmall=fIBdfOrY5dMdWMpmNFK/VQ==, figureFileBig=PM1i0Nw7M8dbVqLewvjqig==, tableContent=null), ArticleFig(id=1304921922748313848, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图3, caption=
一些用于低介电PI的二胺单体, figureFileSmall=fIBdfOrY5dMdWMpmNFK/VQ==, figureFileBig=PM1i0Nw7M8dbVqLewvjqig==, tableContent=null), ArticleFig(id=1304921922811228409, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.4, caption=
Effect of fluorine incorporation on refractive index (n) and Dk[13], figureFileSmall=zxC4o51kA7sUM/IOT2tJbA==, figureFileBig=nKqW+FZk4y3zq7zvngokoA==, tableContent=null), ArticleFig(id=1304921922878337274, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图4, caption=
氟元素引入对折射率(n)及Dk的影响[13], figureFileSmall=zxC4o51kA7sUM/IOT2tJbA==, figureFileBig=nKqW+FZk4y3zq7zvngokoA==, tableContent=null), ArticleFig(id=1304921922987389179, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.5, caption=
Dielectric constant humidity response characteristic of FPI and its correlation with imide group content[20], figureFileSmall=7mzRiwZ9VVr3ndZ29UGFng==, figureFileBig=DMjntySQJdhnsMOglMCGmA==, tableContent=null), ArticleFig(id=1304921923054498044, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图5, caption=
FPI介电常数的湿度响应特性及其与酰亚胺基比例的相关性[20], figureFileSmall=7mzRiwZ9VVr3ndZ29UGFng==, figureFileBig=DMjntySQJdhnsMOglMCGmA==, tableContent=null), ArticleFig(id=1304921923117412605, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.6, caption=
Correlation of Dk, Df and molecular physical property parameters of polyimide[33], figureFileSmall=TEtyUeR8LqdidGblgBHGPA==, figureFileBig=iW13++yEExsgMfraSL2O8w==, tableContent=null), ArticleFig(id=1304921923197104382, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图6, caption=
聚酰亚胺的Dk、Df与分子物性参数的相关性[33], figureFileSmall=TEtyUeR8LqdidGblgBHGPA==, figureFileBig=iW13++yEExsgMfraSL2O8w==, tableContent=null), ArticleFig(id=1304921923272601855, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.7, caption=
Correlation between Dk, Df and structural/polarization parameters of PI[3], figureFileSmall=lJckmmSd+TNu9aQWVcT21w==, figureFileBig=GDgvDwVvnBS5xafkOaopqw==, tableContent=null), ArticleFig(id=1304921923352293632, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图7, caption=
PI的Dk、Df与结构/极化参数的相关性[3], figureFileSmall=lJckmmSd+TNu9aQWVcT21w==, figureFileBig=GDgvDwVvnBS5xafkOaopqw==, tableContent=null), ArticleFig(id=1304921923423596801, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.8, caption=
Correlation between humidity-induced growth rates of Dk and Df at 10 GHz[3], figureFileSmall=N0ornU0cx+V9dPbD+Hkjtw==, figureFileBig=C6DBY/DC/ihgMd6yoqAuPA==, tableContent=null), ArticleFig(id=1304921923541037314, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图8, caption=
10 GHz下Dk和Df随湿度增长率的相关性[3], figureFileSmall=N0ornU0cx+V9dPbD+Hkjtw==, figureFileBig=C6DBY/DC/ihgMd6yoqAuPA==, tableContent=null), ArticleFig(id=1304921923914330371, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.9, caption=
Increase of Dk and Df with water absorption at 10 GHz[41], figureFileSmall=AL8fmN2r49EdKVZAgwaolw==, figureFileBig=06LNELhrDMEGAvLJ2HO45w==, tableContent=null), ArticleFig(id=1304921923989827844, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图9, caption=
10 GHz下Dk和Df随吸水量增加的变化[41], figureFileSmall=AL8fmN2r49EdKVZAgwaolw==, figureFileBig=06LNELhrDMEGAvLJ2HO45w==, tableContent=null), ArticleFig(id=1304921924061131013, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.10, caption=
Peak deconvolution of O-H stretching bank ν(OH) in FT-IR spectra of PIs and schematic diagram of water molecules in different states [41], figureFileSmall=9YJheiyOiHefhzknvCpkoA==, figureFileBig=x5mN1G4gTWdpGi0dGmRB5A==, tableContent=null), ArticleFig(id=1304921924350537990, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图10, caption=
PI的FT-IR谱中O-H伸缩振动峰v(OH)的分解结果及不同形态水分子的结构示意图[41], figureFileSmall=9YJheiyOiHefhzknvCpkoA==, figureFileBig=x5mN1G4gTWdpGi0dGmRB5A==, tableContent=null), ArticleFig(id=1304921924417646855, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.11, caption=
Dielectric dispersion of spectra PIs in 25~330 GHz[43], figureFileSmall=+I145MiG96Sey0tGUrg4+A==, figureFileBig=US9S1wPF+Xxd/mY8mQkiGg==, tableContent=null), ArticleFig(id=1304921924652527880, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图11, caption=
25~330 GHz范围内PI的介电弥散谱[43], figureFileSmall=+I145MiG96Sey0tGUrg4+A==, figureFileBig=US9S1wPF+Xxd/mY8mQkiGg==, tableContent=null), ArticleFig(id=1304921924719636745, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=EN, label=Fig.12, caption=
Schematic illustration of mechanism underlying extremely low humidity and frequency dependence of highly fluorinated PIs in 10~330 GHz range[44], figureFileSmall=i1ihjdcbeKYTSdrJvQclhw==, figureFileBig=f+ILRis/SVqPdFcFOnR3ag==, tableContent=null), ArticleFig(id=1304921924782551306, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304921795417633651, language=CN, label=图12, caption=
高含氟PI在10~330 GHz范围内表现出极低湿度与频率依赖性的机理示意图[44], figureFileSmall=i1ihjdcbeKYTSdrJvQclhw==, figureFileBig=f+ILRis/SVqPdFcFOnR3ag==, tableContent=null)], attaches=null, journal=Journal(id=1146437660891000859, delFlag=0, nameCn=绝缘材料, nameEn=Insulating Materials, nameHistory1=null, nameHistory2=null, issn=1009-9239, eissn=null, cn=45-1287/TM, coden=null, periodic=0, language=CN, oaType=是, ccby=CC BY-NC-ND, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=To3JhdgsOj1Q7eh5WnUN1g==, journalPrice=null, startedYear=null, abbrevIsoEn=null, journalRemark=null, publicationField=null, createdTime=1751261638140, updatedTime=1788951175809, createdBy=18614031015, updatedBy=13041195026, firstLetterCn=J, firstLetterEn=J, 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