WRORUsed for measuring shear of different meltsMelt viscosity at a certain rate.

belthave3An exitThe rheometer of the melt pump is used for rapid determination of the flow curve of polymers.

measuring principle:

meltviscosityIt's through flowing through a circleMeasured by the melt flow of a capillary tube. Melt passes through an extruderMelt extrusion and controlled by a melt pump3individualConstant and equal melt flow rate. To obtain the viscosity of the melt at a wide range of shear ratesValue, used3A capillary tube with different diametersTake measurements.

At the top of each capillary tube, there is a melt pressure sensor installed to measure pressureFurther measure the capillary pressure drop, and the capillary outlet pressure is0Connect to the outside world)According to the different testing materials, the system can operate at a wide range of shear rates(for exampleApproximately 1:1000 (ratio of pump speed to shear rate)Measure through low flow rate and constant pump speed.

By changing the pump speed, the measurement range can be expanded from approximately 1:30 to a theoretical value of approximately 1:30000. Changing the speed of the melt pump can achieve various shear rates.

According to this design, itNot only can it be measured at low shear ratesMFRAccording to the capillary used, viscosity can also be measured at higher shear rates, which is known as extrusionTypical applications in the field of injection molding.

Shear rate adjustment can be achieved by changing the capillary diameter or the speed of the melt pump to match the test material.

Product Features:

1. Wide range of shear rates.

Three capillary tubes are fed into the melt simultaneously, resulting in a fast detection rate.