以2种完全相容的多分散的聚合物树脂为研究对象,利用动态流变学手段实现了界面分子链扩散过程的实时检测.研究结果发现,完全相容的聚合物树脂之间的扩散动力学参数α具有相对分子质量差异的依赖性,两者之间相对分子质量差异越大,α值越大.通过流变学参数还可获得另一扩散动力学参数—特征时间tc,从而得以计算出组分之间扩散系数,研究结果表明所获得的扩散系数具有频率依赖性. In this paper, two fully compatible polydisperse polymer resins were investigated, and the real-time detection of interfacial molecular chain diffusion process was realized by dynamic rheological method.The results showed that the diffusion kinetics between fully compatible polymer resins The parameter α has a dependence on the relative molecular mass difference, and the larger the relative molecular mass difference between the two is, the larger the value of α is. Another rheological parameter can also be obtained to obtain another diffusion kinetic parameter, the characteristic time tc, Diffusion coefficient between the components, the results show that the diffusion coefficient obtained with a frequency-dependent.