POLYMERS

Polymer Film — Tension Test

Orientation effects, stretch conditions and shrinkage are measured under load for films.

In this example, the expansion and contraction behavior of a 40-μm thick polycarbonate film was tested under tensile load. The results varied considerably depending on the load. Under low amounts of force (5 mN), the film contracted at higher temperatures; however, it expanded if greater force (50 mN) was applied. (measurement with TMA 402 F1 /F3 Hyperion®®®)