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1. A large range of mechanical properties

2. Elastic properties

3. Elastic return

4. Fatigue resistance

5. Outstanding properties at low temperature

6. Dynamic Mechanical Analysis (DMA)

 

 

5. Outstanding properties at low temperature

 

5.1 Good flexibility at low temperature

Pebax^® maintains excellent flexibility at low temperature. The following graphs exhibit the relative evolution of the elastic modulus E′(T) of pebax^® MX1205, pebax® 5533 and pebax^® 6333 at low temperature compared to its value at room temperature.

 

 

5.2 Impact properties 

 

Impact testing defines the energy required to deform and break a material or structure under high-speed solicitations.
The impact resistance can be measured thanks to several methodologies:

• Impact test using a weight drop (ex: multi-axial drop test)
• Pendulum impact test (ex: Izod and Charpy tests)
• Instrumented tests (ex: Dart test)

The most accepted technique for pebax^® is the Izod or Charpy test. The energy required to break the material is measured by calculating the difference between the pendulum energy before and after the impact.
This test can be performed at both room and low temperatures. The samples can vary depending on the geometry and the type of notch.
Whichever the applied method, pebax^® materials offer an excellent impact resistance at both room and low temperatures.

 

5.2.1 IZOD Impact Resistance 

 

The Izod impact test is performed on 6.4 mm thick bars. This test is very common, but has the drawback of an asymmetric solicitation.

 

 

5.2.2 CHARPY Impact Resistance

Compared to the Izod impact test, the notched Charpy impact test enables a precise determination of the impact behaviour of the material and more particularly, when focusing on the ductile/brittle transition or the resilience level of the material in the brittle domain.

The Charpy test can be performed under varying standards depending on the notch design. A fine notch is recommended when applying this test to pebax^®. The tests are performed using the ISO 179 standard at –30°C or 23°C. 

 

 

Matériau	pebax®	pebax®	pebax®	pebax®	pebax®	pebax®	pebax®
Référence	7233	7033	6333	7233	7033	6333	5533
Entaille	Avec	Avec	Avec	Avec	Avec	Avec	Avec
Température essai	23°C	23°C	23°C	-30°C	-30°C	-30°C	-30°C
Résilience Moyenne (Kj/m2)	14,5	119,6	N	8,6	7,5	19,8	N
Ecart type	1,3	3,9	-	0,2	0,3	1,1	-
Dispersion	9	3	-	2	3	6	-
Type de fracture	Casse	Partielle	Aucune	Casse	Casse	Casse	Aucune
Nombre de mesure	10	10		10	10	10
Entaille	Sans	Sans	Sans	Sans	Sans	Sans	Sans
Type de fracture	Aucune	Aucune	Aucune	Aucune	Aucune	Aucune	Aucune