中文摘要：

由于小应变条件下，动态流变行为的测定不会对材料本身的结构造成影响或破坏，动态流变研究被认为是表征填充类聚合物体系填料颗粒的分散状态的有效方法．众所周知，窄分子量分布的均相聚合物体系在低频率（ω）区域的粘弹行为满足线性粘弹关系，而填充类聚合物基复合材料的流变行为表现出特殊的粘弹特征，

英文摘要：

A study of viscoelastic properties of graphite （GP） filled high density polyethylene composites was carried out. The Mooney equation was modified to evaluate the formation and development of agglomerate structure for high filled suspension system. The apparent filler concentration （ψ） was substituted by the effective volume fraction, ψeff. It is believed that in the case of high filler concentrations the viscoelastic properties of the composites are mainly related with ψeff.Here, we define ψeff= fψ, in which f（f≥ 1 ） is the experiential factor of effective volume, corresponding to the microstructure with different relaxation time in HDPE/GP system. In the low ψ region, the viscoelastic properties of the composites can be described by the original Mooney equation, while the viscoelastic properties of the high loading composites can be described by the modified Mooney equation considering the effective filler volume in the case of ω = 0.1 rad/s, experientially postulate f = 1.55.