Tensile Strength of Polypropylene

●Introduction
In recent years, a variety of synthetic resins have been put to use in a very wide range of fields.
Of these, a number of types of polypropylene have been developed since its production started in 1962, thanks to its excellent heat resistance, chemical resistance, and insulating properties.
The scope of utilization is broad, including bumpers and other parts in the automotive field, electrical components, daily use items, and packaging materials.
With this sort of widespread application, it has become important to examine the properties obtainable from the material on a variety of fronts.
In this example, a typical polypropylene material is subjected to tensile testing at slow speeds.

●Tensile Tests at Slow Speeds (Static Tests)
A tensile test at slow speeds was performed using the Shimadzu precision universal tester Autograph AG-X. (Fig. 1)
Strain between two reference points was measured using a extensometer midway at a crosshead speed (loading speed) of 5 mm/min.
Afterwards, the extensometer was removed, and the sample was loaded until fracture.