PREDICTION OF DYNAMIC AND TRANSIENT RHEOLOGICAL PROPERTIES OF POLYSTYRENE AND HIGH-DENSITY POLYETHYLENE MELTS FROM THE MOLECULAR-WEIGHT DISTRIBUTION

被引：16

作者：

BERSTED, BH

机构：

[1] Research and Development Department, Amoco Chemicals Corporation, Amoco Research Center, Naperville, Illinois

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1979年 / 23卷 / 05期

关键词：

D O I：

10.1002/app.1979.070230502

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A model relating the steady‐shear melt viscosity and elasticity to the molecular weight distribution in HDPE and polystyrene melts has been extended to predict the dynamic viscosity, modulus, and loss modulus. Limitations in the model as applied to the dynamic properties are discussed. The model is also applied to the transient response of stress growth during steady shearing. This application is considered useful because it may help describe nonsteady‐state flow of polymer melts in short dies and cyclic operations as employed in commercial molding equipment. Copyright © 1979 John Wiley & Sons, Inc.

引用

页码：1279 / 1289

页数：11

共 23 条

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