Affiliation:
1. School of Mechanical Engineering Tianjin University of Science and Technology Tianjin 300202 P. R. China
2. Tianjin Key Laboratory of Integrated Design and On‐line Monitoring for Light Industry & Food Machinery and Equipment Tianjin University of Science and Technology Tianjin 300202 P. R. China
Abstract
AbstractIn order to investigate the effect of rheological parameter of blends on mixing performance of dynamic mixers, the flow of virtual material (VM)/thermoplastic polyurethanes (TPU) with high and low viscosities in it are simulated. The effect of rheological parameter ratios, including zero shear viscosity ratio (η0VM/η0TPU), relaxation time ratio (λVM/λTPU) and non‐Newtonian index ratio (NVM/NTPU) on pressure drop (Δp), segregation scale (S), and power consumption (P) are analyzed using Taguchi Orthogonal Method, and the effects of rotation speed (n) of the rotor and flow rate ratio (QVM/QTPU) are studied using single factor method. The results indicate η0VM/η0TPU is the most significant factor affecting Δp, S, and P. When η0VM/η0TPU = 1, λVM/λTPU = 1, NVM/NTPU = 1, S of blends reach the minimum value. With n increasing, the influences of QVM/QTPU and viscosity of TPU on S are reduced.