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On the apparent relation between adhesive failure and melt fracture

 

作者: Davide A. Hill,   Tomiichi Hasegawa,   Morton M. Denn,  

 

期刊: Journal of Rheology  （AIP Available online 1990）
卷期: Volume 34, issue 6  

页码: 891-918

 

ISSN:0148-6055

 

年代: 1990

 

DOI:10.1122/1.550105

 

出版商: The Society of Rheology

 

关键词: Melt fracture;Adhesive failure;Wall slip in capillary flow;Extrudate surface distortion;Viscoelastic shift factor;DISTORTION;ADHESION;ELASTOMERS;SLIP;CAPILLARY FLOW;EXTRUSION;FRACTURE MECHANICS

 

数据来源: AIP

 

摘要:

The theory of adhesive failure between elastomers and a nonpolymeric surface provides a framework for the analysis of melt fracture in polymer melts. Peeling experiments on LLDPE below the melt processing temperature are shown to predict the onset of melt extrudate surface distortion and the functional form and magnitude of subsequent wall slip in capillary flow experiments using the same polymer. The equation for the slip velocity is based only on peeling experiments and knowledge of the temperature‐ and pressure‐dependence of the viscoelastic shift factor.

 

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