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通过共缩聚合成了几种新型的,压阻系数很高的聚省配自由基高聚物(PAQR).实验发现:在直流电导率对数与外界压力(0.01~1.0GPa)平方根的线形关系上有一个转折点(约0.11GPa);Mott—T-1/4规律的适用范围可延伸至高温区(298~486K);直流电导率和自旋浓度,g因子和峰—峰线宽之间与共编聚时引入的六氟二酐的物质的量比存在类似的变化趋势,在不同温度下介电系数的对数与压力平方根的线性关系图形并不完全服从Pohl的理论预示.
Several new polyaddition free radically polymerizable polymers (PAQR) have been synthesized by copolycondensation. The experimental results show that there is a turning point (about 0.11 GPa) in the linear relationship between the DC logarithm and the square root of the external pressure (0.01-1.0 GPa). The applicable range of Mott-T-1/4 law can be extended to (298 ~ 486K). There was a similar trend in the ratio of DC conductivity, spin concentration, g-factor and peak-to-peak width to the amount of hexafluoro dianhydride introduced at copolymerization. The linear relationship between the logarithm of the dielectric constant and the square root of the pressure does not completely follow Pohl’s theoretical predictions.