采用非线性添加剂对聚酰亚胺进行电导率改性,研究了改性前后介质的电导特性及其他介电性能,以及添加剂含量对聚酰亚胺复合介质材料电导特性的影响.结果表明,改性后的复合试样的体电导率随添加剂质量分数的变化而变化,当质量分数小于5%时,电导率略有下降,大于5%时显著上升.改性后的复合介质材料的非线性电导率特性变化显著.
The modification of the non-linear conductivity property for polyimide by the non-linear filler was studied. The conductance property and other dielectric properties of pre and post modification and the influence of the amount of non-linear filler for conductance property of polyimide was also investigated. The experimental results indi-cate that the conductivity of the modified composite materials varied according to the amount of non-linear filler. When the mass fraction is less than 5 %, the conductivity declined slightly, when the mass fraction is more than 5 %, the con-ductivity went up significantly. The non-linear conductivity of modified composite materials changed obviously.
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