Scope Of Application

1. RT-722B Auto Cleaning Capillary Rheometer is suitable for measuring the shear rate of plastics and polymer materials, the melt flow, and the apparent viscosity of thermoplastics under the action of shear stress under certain temperature conditions.

2. This rheometer is a computer-measurement and control intelligent capillary rheometer that can work under constant pressure, constant speed, constant temperature, different heating rates, different temperatures, different shear rates, etc. The software automatically determines the pressure, temperature, speed, and other detection parameters of different plastics under different die environments. The software automatically draws curves and saves and prints the data.

3. It can be customized according to user requirements for different specifications (low-temperature type, high-temperature type, different pressure, different rod diameter, etc.) models.

1. Constant velocity shear test: It can measure shear stress and shear rate curve, as well as shear viscosity and shear rate curve.
2. Constant pressure shear test: It can measure shear viscosity and shear rate curves.
3. Step shear rate test: Different shear rates can be set according to user requirements, which can measure the shear stress and shear rate curve, shear viscosity and shear rate curve, and judge the melt rupture condition and the minimum flow pressure and shear rate of the melt according to the changes of the curve during the experiment.
a) Flow/non-flow test: measurement of viscosity and temperature relationship, can accurately determine the minimum flow temperature
b) Melt rupture and flow instability, studying flow instability phenomena, including melt rupture and melt fracture.
4. Temperature rise rate test: determination of melt viscosity changes with temperature rise.
5. Temperature constant pressure test: measure material softening point.

RT-722 Capillary Rheometer Testing Standards

IS011443 (2005-3-5) Determination of Plastic fluidity by Capillary and slit Rheometer

ASTM D3835 Capillary Rheometry Shear Sweep, Thermal Stability

RT-722 Capillary Rheometer Technical Parameters

RT-722B Capillary Rheometer Features and Benefits

1. A high data acquisition frequency (more than 100PPS) can more accurately record the transformation point of the material under different states and will be able to see the critical material state transformation point. The apparent viscosity at different shear rates was calculated accurately.
2. It can display various data curves and coordinates in different forms.
3. The instrument’s load-loading device design is reasonable, and it uses a high-precision pressure sensor for data acquisition, eliminating the need for traditional load-sensor acquisition. It has a double closed loop of software and hardware for step-less speed and loading force adjustment. It allows for both manual and automatic loading control, which is convenient, fast, and accurate.
4. Regarding the shear viscosity and shear rate curve axis, The test axis is a normal axis. After the test, you can directly adjust the log axis through the mouse to check the G-axis image. This allows you to observe the image in two ways, and the lowest point of the axis can be set with the mouse after the test.
5. The entire machine is built with an aluminum alloy frame, providing a more attractive appearance, excellent stability, and more accessible transport and installation.
6. Scalability: The instrument can be expanded into a double indenter or low-temperature test structure without replacing the main unit.
7. Large load capacity: This instrument can perform a maximum 10KN large load pressure test.
8. The furnace chamber of the RT-722B Capillary Rheometer is designed to be rotated flexibly to facilitate the cleaning of the bore.