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在40Hz～110MHz频率范围对NaA沸石堆积体系和聚苯乙烯-聚吡咯悬浮液进行了介电测量.两类体系分别在105和107Hz表现出因界面极化产生的弛豫.利用Hanai理论解析两类体系的介电谱,发现解析体积分数与实测体积分数之间存在与体系的浓度相关的明显差异.通过分析Wagner原始模型阐明了差异的原因,指出了分散相粒子相互作用力与差异程度间的内在联系,从介电角度为胶体分散系中粒子统计排列方式的确定提供了判定依据:当分散系浓度高于临界值时,其最可取粒子统计排列模式为六方最密型;低于临界值后,排列模式随浓度的降低逐渐向简单立方型转变.
The dielectric measurements of NaA zeolite and polystyrene-polypyrrole suspension in the frequency range from 40Hz to 110MHz show that the two systems exhibit relaxation due to interfacial polarization at 105 and 107Hz respectively.According to the Hanai theory, two Class system, we find that there is a significant difference between the analytic volume fraction and the measured volume fraction, which is related to the concentration of the system.Analyzing the Wagner original model elucidates the reason for the difference and points out the interaction between the dispersed particles and the degree of difference , Which provides the basis for determining the statistical arrangement of particles in the colloidal dispersion system from the dielectric point of view: when the dispersion concentration is higher than the critical value, the most desirable particle statistical arrangement pattern is the hexagonal most dense type; below the critical After the value, the arrangement pattern gradually shifted toward the simple cubic pattern as the concentration decreased.