Semi-crystalline polymers generally have less deformation capacity than amorphou

ID: 1713272 • Letter: S

Question

Semi-crystalline polymers generally have less deformation capacity than amorphous polymners

True

False

UnansweredQuestion 2

0 / 2 pts

The high amount of ductility in polymers is due to the drawing out of the tangled polymer chains

True

False

UnansweredQuestion 3

0 / 2 pts

Which of the following is an example of visco-elastic behavior

Under faster loading the material strength is increased

flows irreversibly under action of external forces

All engery of deformation is stored

The stress is proportional to the strain

UnansweredQuestion 4

0 / 2 pts

How many specimens will be tested per lab day?

UnansweredQuestion 5

0 / 2 pts

It is expected that the slowly loaded specimens will have a ____ modulus and ____elongation at failure.

lower, lower

higher, lower

higher, higher

lower, higher

1.true

2. True

3. The best example of visco-elastic material is the stress is proportional to strain i.e with in the proportionality limit.

So option d is correct.

4. Number of specimens performed is 3.

5. Lower Young's modulus and higher ductility I.e elongation at failure.

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