论文信息 - A multimode interfacial constitutive equation for molten polymers

A multimode interfacial constitutive equation for molten polymers

A multimode interfacial constitutive equation is presented to describe the steady‐state and dynamic behavior of polymer/metal interfaces under flow conditions. The polymer melt is considered as a network of different types of polymer segments, modeled as Hookean springs with different relaxation times. In this way a set of convection equation results; these are solved numerically by using a direct stochastic interpretation method originally developed by Petruccione and Biller [J. Chem. Phys. 89, 577 (1988)]. The stress tensor and the slip velocity are calculated as functions of time in various simple shear flows and the numerical results are compared with available experimental slip velocity data in both steady and transient shear flows.

Savvas G. Hatzikiriakos

[1] W. R. Schowalter,et al. A Model for Adhesive Failure of Viscoelastic Fluids During Flow , 1986 .

[2] S. Hatzikiriakos,et al. Wall slip of molten high density polyethylenes. II. Capillary rheometer studies , 1992 .

[3] M. Denn,et al. On the apparent relation between adhesive failure and melt fracture , 1990 .

[4] S. Hatzikiriakos,et al. Wall slip of molten high density polyethylene. I. Sliding plate rheometer studies , 1991 .

[5] J. Dealy,et al. Exponential shear: a strong flow , 1987 .

[6] N. Kalogerakis,et al. A dynamic slip velocity model for molten polymers based on a network kinetic theory , 1994 .

[7] H. Henning Winter,et al. Determination of discrete relaxation and retardation time spectra from dynamic mechanical data , 1989 .

[8] H. Winter,et al. The relaxation time spectrum of nearly monodisperse polybutadiene melts , 1992 .

[9] C. W. Stewart. Wall slip in the extrusion of linear polyolefins , 1993 .

[10] Douglass S. Kalika,et al. Wall Slip and Extrudate Distortion in Linear Low‐Density Polyethylene , 1987 .

[11] S. Hatzikiriakos. A Slip Model for Linear Polymers Based on Adhesive Failure , 1993 .

[12] H. Winter,et al. Interrelation between continuous and discrete relaxation time spectra , 1992 .

[13] A. V. Ramamurthy. Wall Slip in Viscous Fluids and Influence of Materials of Construction , 1986 .