Investigation of the large plastic deformation of iPP induced by plane strain compression: Stress-strain behavior and thermo-mechanical properties

被引：14

作者：

Samios, Dimitrios ^{[1
]}

Tokumoto, Shinichi ^{[1
]}

Denardin, Elton L. G. ^{[1
]}

机构：

[1] Univ Fed Rio Grande Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2006年 / 22卷 / 10期

关键词：

large plastic deformation; deformation by plane strain compression; polypropylene;

D O I：

10.1016/j.ijplas.2006.02.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A description of a specific device and a method to measure accurately large plastic deformation parameters in semicrystalline polymers induced by Plane Strain compression is presented. A force magnification of 22:1 was obtained which permitted the performance of Plane Strain Compression deformation experiments until 22 ton load. Stress values up to 300 MPa as well as strains (compression ratios) until 70% were accurately measured. Five commercial polypropylene grades with different molar mass (MW) namely, 161,800, 228,600, 419,800, 448,400 and 708,900 g/mol were studied. The behavior of the stress-strain curves in relation to the deformation temperature, the M-w, and the main features and properties obtained by Densimetry, DMA and DSC analyses of the plastically deformed polypropylene samples are presented and discussed. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1924 / 1942

页数：19

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