文献类型：期刊文献

英文题名：The optimization of Carreau model and rheological behavior of alumina/linear low-density polyethylene composites with different alumina content and diameter

作者：Li, Guo[1];Zhang, Mitao[1];Ji, Huajian[1];Ma, Yulu[1];Chen, Tao[2];Xie, Linsheng[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650031, Yunnan, Peoples R China

年份：2021

卷号：21

期号：1

起止页码：742

外文期刊名：E-POLYMERS

收录：;EI(收录号：20214411087925);WOS:【SCI-EXPANDED(收录号:WOS:000707633300001)】；

语种：英文

外文关键词：rheology; Carreau model; Al2O3 particle diameter; Al2O3/LLDPE composites

摘要：The influence of alumina (Al2O3) content and diameter on the viscosity characteristics of the alumina/linear low-density polyethylene (Al2O3/LLDPE) composites was discussed. The composites were fabricated by melt mixing with the two-rotor continuousmixer. The equivalent surface average particle diameter (d(A)) of Al2O3 was calculated by the scanning electron microscopic (SEM) images of samples. The steady-state and dynamic rheological measurements were used to study the evolution of viscosity parameters. With the Carreau model fitting to the steady-rate rheological data, zero-shear viscosity eta(0), time constant lambda, and power lawindex n of compositeswere obtained. Onthis basis, an optimized Carreau model was established by studying the changes of these parameter values. The rheological result presented that the parameter values (eta(0), lambda, and n) were linearly proportional to the filling content of Al2O3 particles for nano-Al2O3/LLDPE composites. However, these parameters were, respectively, related to d(A), d (2)(A), and d(A)(3) for micron-Al2O3/LLDPE composites.