磁性金属纤维与树脂混合物的有效介电常数和有效磁导率的预测

Prediction of the Effective Permittivity and Permeability of Magnetically Material Fiber with Resin

提出了一个预测磁性金属纤维与树脂混合物的有效介电常数与有效磁导率的方法。首先推导了单根纤维的磁矩、电矩、表观介电常数和表观磁导率的计算公式;分析了纤维的表观磁导率与纤维的几何尺寸间的关系,说明了高磁导率的机理。然后用Maxwell-Garnett模型计算了纤维以不同方式分布的混合物的有效介电常数和有效磁导率。

The method for predicting the effective permittivity and effective permeability of the composite of magnetic metal fiber with resin is presented, firstly, The apparent permittivity and apparent permeability of the electric dipole and magnetic dipole of a single fiber was derived. The relation of these apparent parameters with the geometry of the fiber is analyzed ; the mechanism of high μ of the fiber is demonstrated. Then, use the Maxwell-Garnett Mode to calculate the effective EM parameters of the composite of the fiber mixed with resin with different distribution are computed .