2-甲基-1,4-二氮二二环[2.2.2]辛烷季铵盐的介电性质研究的开题报告【摘要】本文研究了2-甲基-1,4-二氮二二环[2.2.2]辛烷季铵盐的介电性质。介电常数、介质损耗角正切等物理量是对介质性能的评价，本文采用交流阻抗法和等效电路法等多种实验手段，探究了2-甲基-1,4-二氮二二环[2.2.2]辛烷季铵盐在不同频率下的介电性质及其影响因素。研究表明，2-甲基-1,4-二氮二二环[2.2.2]辛烷季铵盐在低频域表现出良好的介电性质。介电常数在50Hz时达到峰值，介质损耗角正切随着频率的升高而减小。同时还研究了温度和配位阳离子浓度对介电性质的影响，发现温度升高和配位阳离子浓度增加都会导致介电常数下降、介质损耗角正切增大。该研究对于进一步了解2-甲基-1,4-二氮二二环[2.2.2]辛烷季铵盐的化学性质和在介电材料中的应用具有重要意义。【关键词】2-甲基-1,4-二氮二二环[2.2.2]辛烷季铵盐；介电性质；介电常数；介质损耗角正切；交流阻抗法；等效电路法【Abstract】Thispaperstudiesthedielectricpropertiesof2-methyl-1,4-diazoniabicyclo[2.2.2]octanequaternaryammoniumsalt.Thedielectricconstant,dielectriclosstangentandotherphysicalquantitiesaretheevaluationofthedielectricproperties.Inthispaper,variousexperimentalmethodssuchasACimpedancemethodandequivalentcircuitmethodareusedtoexplorethedielectricpropertiesof2-methyl-1,4-diazoniabicyclo[2.2.2]octanequaternaryammoniumsaltatdifferentfrequenciesandtheirinfluencingfactors.Theresearchshowsthat2-methyl-1,4-diazoniabicyclo[2.2.2]octanequaternaryammoniumsaltexhibitsgooddielectricpropertiesinthelowfrequencydomain.Thedielectricconstantreachesitspeakat50Hz,andthedielectriclosstangentdecreaseswiththeincreasingfrequency.Theinfluenceoftemperatureandcoordinationcationconcentrationondielectricpropertiesisalsostudied.Itisfoundthattheincreaseoftemperatureandcoordinationcationconcentrationwillleadtothedecreaseofdielectricconstantandtheincreaseofdielectriclosstangent.Thisstudyisofgreatsignificanceforfurtherunderstandingthechemicalpropertiesof2-methyl-1,4-diazoniabicyclo[2.2.2]octanequaternaryammoniumsaltanditsapplicationindielectricmaterials.【Keywords】2-methyl-1,4-diazoniabicyclo[2.2.2]octanequaternaryammoniumsalt;dielectricproperties;dielectricconstant;dielectriclosstangent;ACimpedancemethod;equivalentcircuitmethod.