Computer Controlled Torque Rheostat Tester

The Computer Controlled Torque Rheostat Tester simulates industrial mixing on a lab scale. A material sample in a heated chamber with rotating blades generates torque as it resists rotor motion. A transducer measures this torque in real-time. The computer controls chamber temperature and rotor speed per a test profile, presenting data as a torque-time curve for analyzing material behavior.

Application

Materials Science: An ideal instrument for studying the flow, plasticity, thermal, and shear stability of materials.
Food Industry: Used to test the rheological properties of food materials, such as the mixing of multi-component materials, the cross-linking and curing of thermosetting resins, and the vulcanization of elastomers.
Chemical Industry: Used to study the rheological characteristics of chemical materials, such as the rheological properties of polymer melts, suspensions, coatings, inks, and food.
Geological Engineering: Used for rheological characterization of geological materials, such as the flow and deformation characteristics of rocks and soils.

Standard

ASTM D2538: Standard Practice for Fusion of Poly(Vinyl Chloride) (PVC) Compounds Using a Torque Rheometer

ISO 305: Plastics - Determination of thermal stability of poly(vinyl chloride), related chlorine-containing homopolymers and copolymers and their compounds - Discoloration method

Advantages

Characterizes Material Processability: Provides direct measurement of how materials behave during mixing and processing under controlled conditions.

Evaluates Thermal and Shear Stability: Helps determine a material's resistance to degradation under heat and mechanical stress.

Simulates Industrial Processes: Replicates key aspects of industrial mixing, extrusion, and other processing operations on a laboratory scale.6

Objective and Quantitative Data: Generates precise torque-time curves and other data for analysis and comparison.

Computer Controlled Precision: Automated control of temperature, speed, and test duration ensures high repeatability and accuracy.

Versatile for Various Materials: Applicable to a wide range of polymers, elastomers, ceramics, food products, and other materials that undergo viscous processing.

Supports R&D and Quality Control: Essential tool for material development, formulation optimization, and ensuring consistent product quality.

Identifies Material Behavior Stages: The torque curve clearly shows different phases of material transformation during processing (e.g., melting point, fusion time, degradation onset).

Feature

High Precision:  Utilizes a non-contact dynamic torque sensor, resulting in high data measurement accuracy and excellent repeatability.
Modular Design: Features a modular design and plug-and-play functionality, allowing for the integration of various auxiliary equipment to perform different laboratory simulation experiments.
Easy Operation: The entire process is controlled and monitored by a computer; data acquisition, control, and experimental data processing are all handled by dedicated software, ensuring convenient operation, precise control, and fast and efficient data processing and result output.
Powerful Functionality: Supported by software, it performs functions that traditional torque rheometers cannot, such as linear speed increase measurement of material shear sensitivity characteristics, pressure inlet correction during viscosity spectrum measurement, and non-Newtonian fluid correction.
Wide Application:  Widely applicable in research and production, it can simulate mixing and extrusion processes in the laboratory, providing a series of data to guide research and production of formulations in real-world applications.

Parameters

Accessoriess

One instruction manual

One certificate of conformity

One calibration certificate

Test Procedures

When using a computer-controlled torque rheometer tester, the first step is to ensure that the laboratory environment meets the requirements, such as temperature and humidity. Then, prepare the sample to be tested and ensure its condition is suitable for testing. Next, set the test parameters, such as temperature, rotation speed, and pressure application method. After loading the sample, start the testing process according to the predetermined procedure and closely monitor the data changes on the display screen. Finally, save the data and perform data analysis.