WROR III/3 online melt index analyzer

The WROR III/3 online melt index meter is a rheometer with a melt pump and three outlets, used for rapid determination of polymer flow curves. WROR is used to measure melt viscosity at different melt shear rates. A rheometer with a melt pump and three outlets for rapid determination of polymer flow curves. Measurement principle: The viscosity of the melt is measured by the flow of the melt through a circular capillary tube. The melt is melted and extruded through an extruder, and three constant and equal melt flow rates are controlled by a melt pump. In order to obtain the viscosity values of the melt under a wide range of shear rates, three capillary tubes with different diameters were used for measurement. At the top of each capillary tube, a melt pressure sensor is installed to measure pressure (thereby measuring capillary pressure drop, with capillary outlet pressure at 0, connected to the outside). According to the different test materials, the system can measure at a wide range of shear rates (such as approximately 1:1000 (pump speed to shear rate ratio)) through small flow rates and constant pump speeds. 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, it can not only measure MFR at low shear rates. Depending on the capillary used, viscosity can also be measured at higher shear rates, which is a typical application in the fields of extrusion and 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: .....

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 pump3aConstant 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.