https://doi.org/10.1051/epjconf/20100603003
Study of Time-Dependent Properties of Thermoplastics
1
German Institute for Polymers (DKI),
Schlossgartenstrasse
6, D-64289
Darmstadt
2
Martin-Luther-Universität Halle-Wittenberg, Lehrstuhl fūr
Technische Mechanik, D-06099
Halle
a e-mail : VKolupaev@dki.tu-darmstadt.de
Simple tests carried out with a common tension/compression testing machine are used to obtain timedependent
properties of non-reinforced thermoplastics. These tests include ramp loadings as well as
relaxation and creep tests. Two materials (PBT Celanex 2002-2 and POM Hostaform C9021, Ticona
GmbH, Kelsterbach) were taken for the experiments. The experiments show that an adequate description
of the long-term material properties can be obtained from the short-time tests, namely from tests
with constant traverse speed 
.
Below a model for the time-dependent mechanical behavior is presented and fitted to the obtained measured data. For the evaluation of the fitting quality long-term tests are used. Especially creep and relaxation tests with ”jumps”, i.e. rapid change of loading, are important for this purpose.
© Owned by the authors, published by EDP Sciences, 2010
