Torque rheometer

HZJ-300 Microcomputer-Controlled Torque Rheometer

I. Main Functions and Applications

An ideal equipment for studying the flow, plasticization, thermal, and shear stability of materials, this rheometer offers a dynamic measurement method that is closer to actual processing. It can continuously and accurately measure the rheological properties of materials under conditions similar to actual processing, such as the mixing of multi-component materials, the cross-linking and curing of thermosetting resins, the vulcanization of elastomers, the dynamic stability of materials, and the influence of screw speed on the processing performance of the system.

The torque rheometer is a device fully controlled by a computer, utilizing large-scale integrated circuits. Data acquisition, control, and processing of experimental data are all performed by the corresponding software. Not only does it offer ease of operation, accurate control, and quick data processing and result output, but more importantly, with the support of the software, it can accomplish functions that traditional torque rheometers cannot, such as measuring the shear sensitivity characteristics of materials with linear speed increase, pressure entry correction during viscosity spectrum measurement, and non-Newtonian fluid correction.

Can be used to study the thermal stability, shear stability, flow, and plasticizing behavior of thermoplastic materials. It is characterized by the ability to continuously, accurately, and reliably measure the rheological properties of the system during processes similar to actual processing. Additionally, it can perform curing property tests on thermosetting materials. It holds significant value for teaching, scientific research, and the development of new materials and production processes.

In recent years, there has been significant advancement in computer measurement and control technology. We have integrated more new technologies into the testing technology of plasticizers, especially the revolutionary changes brought by the Windows operating system to the information processing capabilities of PCs. Data collection, control, and the processing of experimental data are all completed by corresponding software, offering characteristics such as strong flexibility, robust information management and processing capabilities, and ease of use. It allows for obtaining more physical property information of synthetic materials. This is not only reflected in the ease of instrument operation, accurate control, quick processing of experimental data, and fast output of results, but also in the ability to perform die correction during the measurement process of the relationship between material apparent viscosity and shear rate.

Section II: Working Principle of Microcomputer-Controlled Torque Rheometer

The equipment is equipped with screws with various parameters, which rotate within a cylinder at a certain temperature. At the other end of the cylinder is a feeding hopper. As the material is transported to 2/3 of the cylinder, it is gradually plasticized. It then enters the remaining part of the cylinder for homogenization. Once all particles are fully melted, they can be extruded through a capillary die to form masterbatch or injected into molds for shaping. Meanwhile, the equipment measures the relationship between the material's apparent viscosity, shear rate, and shear stress.

The software suite of this device consists of the Plastic apparent viscosity test software and the WinNian apparent viscosity test data processing software. The Plastic software allows for the separate collection of test data and parameter control via the PC's serial port, as well as the establishment of a human-machine information interaction interface. It is feature-rich, capable of measuring and controlling 6 temperature channels, including speed setting, measurement, and control, as well as torque and pressure measurement. The curve window can display the time curves of the above data in real-time. These data can be processed by the WinNian software.

By adjusting the screw speed of the extruder, the pressure difference P between the mold's inside and outside can be changed, as well as the extrusion flow rate Q. Test data can be saved in file format. This file can be opened in the software WinNian, where representative data is automatically filtered to output g-h and g-t curves on a double logarithmic coordinate system.

III. Main Composition
1. System

(1) Main Drive System (2) Mixing Unit (3) Plastic Extrusion Unit (4) Master Control System (5) Multi-Segment Temperature Control System (6) Control System (7) Data Acquisition System (8) Computer Experimental Software and Data Processing System

2. Specifications

For example, the Polylab OS torque rheometer includes the main unit (main drive system), a single-screw extruder, a twin-screw extruder (plastic extrusion unit), a compounding machine (compounding unit), a drawing system, a granulator, and a water tank (post-processing system) among other peripheral devices. [1]

IV. Main Technical Specifications

1. Portable Measurement and Control Host Platform

◆ HZJ-300 Torque Rheometer Application:

The rheometer is used to study the thermal stability, shear stability, flow, and plasticizing behavior of thermoplastic materials. Its features include the ability to continuously, accurately, and reliably measure the rheological properties of the system during processes similar to actual processing, as well as to perform curing characteristic tests for thermosetting materials.

◆ HZJ-300 Torque Rheometer Technical Specifications:

Motor Power: 3.5 kW
Motor Speed: 1500 rpm
Reducer: 1:10.15
Power Output RPM: 0 ~ 145
Revolution Control Accuracy: 0.5% F.S
Temperature Control: 5-way temperature sensing, with 4-way temperature control
Static measurement accuracy: 0.1℃
Temperature Control Accuracy: ±1℃
Torque Measurement Range: 0 ~ 300 Nm
Torque Measurement Accuracy: 0.1% F.S
Melt Pressure Measurement Range: 0.1 ~ 100 Mpa
Melt Pressure Measurement Accuracy: 0.5% F.S

Software:

iTest OS Control Software

Polymer Melt Viscosity Data Processing Software

3. Extruder Data Processing Software

4. Blender Data Processing Software

Machine Dimensions: 80×44×142 cm

Portable Mixing Platform

◆ Application:

The mixer platform is capable of conducting a variety of tests, including thermal fusion testing of multi-component thermoplastic materials, curing performance testing of thermosetting materials, thermal stability testing, shear sensitivity testing, and material blending.

Technical Specifications:

Capacity: 60ml

Material: 304L (Imported)

Rotor Type: Roller

Speed Ratio: 3:2

High Temperature: 350℃-400℃

High Torque: 200 Nm

Heating Method: Electric Heating

Processing Power/Sheet: 1000W

Heating Zone: 3-way

Machine Dimensions: 50×40×162 cm

Portable Extruder Platform

◆ Application:

The extruder platform offers the option of various compression ratio screws for granular and powdered materials, which can be paired with flat mold, capillary mold, tube extrusion mold, and wire coating molds for different process simulation tests. The capillary extrusion mold can also be used to measure the relationship between material viscosity, shear rate, and shear stress.

Technical Specifications:

   L:D：                 25:1

Bolt Diameter: 20

Compression Ratio: Particle Material 2.1:1, Powder Material 2.4:1

High Temperature: 350℃-400℃

Heating Method: Electric Heating

Processing Power/Sheet: 800W

Heating Zone: 4 Channels

Material Temperature Measurement: 1 Channel

Machine Dimensions: 55×40×155 cm

Extruder Die

Capillary Molds: 1.27mm diameter, Length-to-Diameter Ratio: 20/1, 30/1, 40/1, each mold core included

Extrusion Molding Die: Outer Diameter: φ12.5mm, Inner Diameter: φ10mm

Flat Die Mold: L×W: 50 × 1.8 mm

Cable Coating Molding: Core: Φ1.5mm, Die: Φ4.0mm

5. Other Technical Requirements

1) Power Data and Environmental Requirements

● Standard Low Voltage Supply: 380V 25A

● Environmental Temperature Requirement: 10-40℃

● Relative humidity requirement for empty space: 80%, no condensation allowed

Flat and level ground

2) Machine Appearance Color

Control and Measurement Host/Host Platform - Supplier Standards

● Blender/Mixing Platform - Supplier Standards

Extruder/Extrusion Platform - Supplier Standards

3) Supplier-provided documents and materials content

User Manual

Product Certificate

Product Packing List