truefalse T F A powder that is compacted at 10 MPa and crumb

true/false?

T F A powder that is compacted at 10 MPa and crumbles under a stress of 1 MPa is a very cohesive powder

T F When pushing powders through dies, they can jam due to friction forces between the powder and the die walls

T F A powder that flows easily has a high angle of repose

T F For an extruder to function properly, the friction between the polymer pellet or powder and the barrel surface must be higher or equal to the friction of the screw surface.

T F The inner friction of powders reduces lateral stress transmission

Solution

1. False

2.true

3.false

4.true

5.true