Simultaneous biaxial deformation behavior of isotactic polypropylene films

被引：29
|
作者：
Capt, L
Rettenberger, S
Münstedt, H
Kamal, MR
机构：
[1] McGill Univ, Dept Chem Engn, Montreal, PQ H3A 2B2, Canada
[2] Univ Erlangen Nurnberg, Dept Mat Sci, Inst Polymer Mat, D-91058 Erlangen, Germany
来源：
POLYMER ENGINEERING AND SCIENCE | 2003年 / 43卷 / 07期
关键词：
D O I：
10.1002/pen.10121
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The simultaneous biaxial deformation behavior of isotactic polypropylene films was investigated using a novel laboratory film stretcher. A detailed description of the apparatus and its measurement capabilities is presented. The effects of drawing temperature and ratio, strain rate, and deformation modes on the macroscopic equibiaxial deformation and its relation to film dimension uniformity were studied. The strain rate was found to have a large influence on biaxial deformation homogeneity. For temperatures 15degreesC to 5degreesC below the melting point, it could be concluded that a homogeneous biaxial deformation was achieved if the Hencky strain rate was higher than 0.1 s(-1). Additionally, it was found that the nominal biaxial yield stresses were linearly dependent on temperature in the range under investigation.
引用
收藏
页码：1428 / 1441
页数：14
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