Tear propagation strength
The tear propagation test is used to establish structural strength.
The test is carried out to DIN ISO 34-1Bb on angled test specimens with an incision. These are pulled, perpendicular to the incision, at a velocity of 500 mm/min until they are torn apart. The tear propagation strength [kN/m] is the quotient of the highest force attained and the specimen thickness.
Results of the test method:
- Tear propagation strength [kN/m specimen thickness]
In terms of its tear propagation strength Desmopan® is far superior to the majority of plastics. Very soft grades attain around 30 – 40 kN/m, while very hard grades can achieve values of more than 200 kN/m.