Rotation extrusion processing rheometer and rheological measuring method capable of simultaneously measuring pressure/shear rheology of polymers

A rotation extrusion processing rheometer, comprising:

• an extruder connected to a rotation extrusion rheometer machine head, wherein the rotation extrusion rheometer machine head comprises a connecting pipes (1), a shunt bracket (3), a lower neck section (12), a machine head piece (15), a die (17), a die driving sprocket (20), and a mandrel (21), wherein the connecting pipe piece (1), the shunt bracket (3), and the machine head piece (15) are connected, wherein the lower neck section (12) is disposed in a first cavity between the shunt bracket (3) and the machine head piece (15), wherein the die (17) is movably disposed in a second cavity in the machine head piece (15) and is connected with the die driving sprocket (20) disposed outside an end face of the machine head piece (15), wherein the mandrel (21) is located in a channel extends through the lower neck section (12), the machine head piece (15), the die (17), and the die driving sprocket (20), a first end of the mandrel (21) extends into a third cavity disposed inside the shunt bracket (3) and is rotatably connected to a first end of a driving rod (24), wherein a second end of the driving rod (24) is connected to a mandrel driving sprocket (27), wherein the mandrel driving sprocket (27) is connected to a first motor through a first coupling, positioned between the mandrel driving sprocket (27) and the first motor, and a first torque sensor is installed on the first coupling, and wherein the die driving sprocket (20) is connected to a second motor through a second coupling, positioned between the die driving sprocket (20) and the second motor, and a second torque sensor is installed on the second coupling.