主客掺杂聚合物材料薄膜介电性的研究  

Study on Dielectric Properties of the Guest-Host Polymer Thin Film DCNP/PMMA

作　　者：史伟[1] 房昌水[1] 潘奇伟[1] 孙洵[1] 顾庆天[1] 许东[1] 秦自楷[2] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100 [2]山东大学物理系,济南250100

出　　处：《压电与声光》1999年第6期461-464,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金!69990540

摘　　要：制备了３－（１，１－二氰基噻吩）－１－本－４，５－二羟羟基－Ｈ－噻唑（ＤＣＮＰ）与聚甲基丙烯酸甲酯（ＰＭＭＡ）组成的主客掺杂聚合物薄膜ＤＣＮＰ／ＰＭＭＡ，用ＤＣＳ测量了该体系的玻璃化温度。在玻璃化温度以上３０℃测量了温区范围内该材料的介电常数的实部和虚部随频率的变化曲线，测试频率范围为５０Ｈｚ～１０ＭＨｚ。由以上各介质谱曲线所对应温度下的特征弛豫时间τ，结合Ａｄａｍ－Ｇｉｂｂｓ模型，模拟计算出了玻璃化温度以下该聚合物的弛豫时间。The guyest--host polymer thin film DCNP/PMMA was prepared. The glass transition temperature Tk was determined by DSC measurement.Above TR,the real part and imaginarypart of dielectric constants of the polymer system versus frequency were measured in 30℃ temperature range.The frequency range is from 50 Hz to 10 MHz.By the chracteristic relaxation time from the dielectric curves above TR, and by using the Adam-Gibbs type temperature dependence ofthe relaxation time, the relaxation time of the polymer system was determined below the glasstransition temperature.

关 键 词：介电性 聚合物 薄膜 

分 类 号：O484.42[理学—固体物理]