What is a Rheometer?

Rheometer, which is used to determine the rheological properties of polymer melts, polymer solutions, suspensions, emulsions, coatings, inks and food. Divided into rotary rheometer, capillary rheometer, torque rheometer and interface rheometer.

For rheometer ^[1]

Capillary rheometer ^[2]

This rheometer has several principles such as oscillating droplets and oscillating shear. It is the most difficult field to achieve accurately in rheological testing. There is no particularly good and universal method.

Typical interface rheometers include cone-plate, parallel-plate, coaxial cylinder, and capillary.

(1) The cone-plate type is a precision rheometer that can measure a variety of material functions and is suitable for higher

Scientists reportedly discovered a "synthetic liquid" with strange properties by using a stretch rheometer.

According to reports, in this research, scientists used a new method to discover and understand the fluidity of this concentrated liquid. Previously, they used dynamic shear rheometers, but this detection method did not fully reflect the application of the liquid in actual industrial production processes. So scientists turned to another toolthe stretch rheometer. The findings were subsequently published in a British journal.

There are several types of instruments for measuring the shear viscosity and flowability of polymers: falling ball type, rotating type (including various modified Mooney viscosity meters), and oscillating type (torsional vibration rheometer and disc oscillation rheometer) , Mixing model [plastic meter] and capillary extrusion type (capillary rheometer and processability tester), etc. The above-mentioned various testing instruments and measuring methods each have their advantages, disadvantages, and scope of application, which can complement each other.