Low cost technique for measuring thermal expansion of thin polymer samples

被引：9

作者：

El-Tonsy, MM ^{[1
]}

机构：

[1] Mansoura Univ, Fac Sci, Dept Phys, Mansoura 35516, Egypt

来源：

POLYMER TESTING | 2003年 / 22卷 / 01期

关键词：

CTE of polymers; low cost technique; thermal properties of polymers; polypropylene; LDPE; PS; polycarbonate;

D O I：

10.1016/S0142-9418(02)00049-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A simple low cost thermomechanical analyzer is described. The device is used to optimize the traction applied for straightening the sample. Optimization was carried out by plotting residual thermal elongation after cooling against degree of traction. With the optimum traction, it was possible to measure the sample's linear thermal expansion coefficient, nearly free from the creep effect. CTE's of some widely used polymers (polystyrene, polypropylene, polyethylene and polycarbonate) are measured and compared with the published values. The performance of the measuring system (sensitivity, accuracy and reproducibility) are presented and discussed. Advantages and limitations of usage of the system are given as a conclusion. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：57 / 62

页数：6