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Development of a biaxial stretching test machine and its applications.

Authors :
Kentaro Egoshi
Toshitaka Kanai
Kazuhiro Tamura
Source :
Journal of Polymer Engineering; Jul2018, Vol. 38 Issue 6, p605-616, 12p
Publication Year :
2018

Abstract

The evaluation method for a biaxially oriented film was developed using in-situ measurement during the stretching process. It can obtain basic data such as stress-strain curves, birefringence, light scattering, three dimensional refractive indexes and birefringence distribution. Stress and strain as functions of stretching speed and stretching temperature, as well as the deformation of spherulite of semi-crystalline polymer can be obtained by measuring the birefringence and light scattering during the biaxial stretching process with a small piece of polymer sample. The experimental results show the stress, retardation and three dimensional molecular orientations behavior during the simultaneous biaxial stretching and the sequential biaxial stretching process. Stretchability, thickness uniformity and spherulite size can be obtained simultaneously. In this paper, advantages and details of the newly developed system will be discussed with some experimental data. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03346447
Volume :
38
Issue :
6
Database :
Complementary Index
Journal :
Journal of Polymer Engineering
Publication Type :
Academic Journal
Accession number :
130760667
Full Text :
https://doi.org/10.1515/polyeng-2017-0210