XDR®: Moving Die Rheometer (MDR) / Rotorless Oscillating Shear Rheometer
|CCSi's development of the uniquely heated rotor with temperature control in the XDR® Oscillating Disk Rheometer (ODR) was followed by a vision of a hybrid ODR with the performance of a conventional Moving Die Rheometer (MDR).
|The XDR®, configured as a Moving Die Rheometer or Rotorless Oscillating Shear Rheometer (U.S. Patent 5,526,693 ... other patents pending), consists of a heated third member with an elastomeric seal between the bottom of the rotor and the bottom of the lower die cavity.
|The seal extends from the edge of the rotor to the inside wall of the die. This prevents the sample from flowing under the rotor, and contains it in the upper die cavity.
| The contribution of the seal to torque is small and readily corrected. Thus, the heated third member actually becomes a moving heated die, i.e., a “Virtual” Moving Die Rheometer.
|The thin sample rapidly achieves testing temperatures, the sample is easily removed from the test chamber, and the simplicity of the design provides for easy maintenance.
|It should be noted that a strain transducer is a key component in the design of this cure meter. It provides a continuous measurement of the strain imposed on the test sample.
|This measurement allows the determination of the mechanical properties of the test sample as well as correcting for any unavoidable deflections in the system. The application of this feature are key to overcoming some of the performance limitations of existing cure meters. These facets are discussed in detail in the article “Innovations”.
||“ ... in the Moving Die Rheometer configuration the sample is sealed between the upper die cavity and an elastomeric seal ... allowing the uniquely heated third member to become a virtual moving die.”
XDR® Moving Die Rheometer: Features & Benefits
|XDR® MDR FEATURES:
- S', S", and S* data;
- Pneumatic rotor clamping;
- Uniquely heated third member;
- Convertibility to an ODR or Mooney reduces initial and future investments;
- MDR Module is compatible with ASTM D5289.
|XDR® MDR BENEFITS:
- Quick & easy sample removal;
- Modular design reduces maintenance cost & down time;
- Reduced sample size & test time;
- Obtains complete dynamic properties;
- Easily & inexpensively reconfigured to an ODR.
XDR® Moving Die Rheometer: Specifications
• 0.1 to 200 lb/in
- Selectable Test Times:
• 0.0 to 99 minutes
- Selectable Temperature Range:
• Ambient to 225 C°
- Angular Displacement:
• ± 0.5°, 1°, 3°, 6° (selectable)
• 160 kg (352.8 lb.)
- Space Requirements:
• Instrument: 610 x 610 x 1220 mm (24 x 24 x 48 in.)
• Computer: 300 x 610 x 710 mm (varies) (12 x 24 x 27 in.)
• Monitor: 410 x 410 x 410 mm (varies) (16 x 16 x 16 in.)
|XDR® OPERATING SYSTEM FEATURES:
- Computerized data acquisition & analysis system;
- Viscometer Module complies with ASTM D1646, ISO 289 (replaced ISO/R 289), BS ISO 289-4, BS 903-A59 & BS 903-A58 (replaced BS 1673);
- Rheometer Module complies with ASTM D2084, ISO 3417, & BS 903-A60 (replaced BS 1673);
- MDR Module is compatible with ASTM D5289 & ISO 6502;
- Microsoft® Windows Operating System;
- Pentium® Processor & Intel® chipset;
- Computerized PID temperature management systems;
- Automatic system calibration;
- Computerized torque measurement system;
- Computerized calibration and verification (no mechanical adjustments necessary);
- Automatic mechanical deflection corrections;
- Superior ability to detect differences in compounds and raw polymers;
- Raw data stored for easy retrieval or transfer;
- Standard and User defined test parameters;
- Real time display of test data and parameters;
- Selectable presentation of data in printed, graphed or overlay formats;
- Real Time Plot & Digital display of:
• S', S", and S* Data
• Loss Angle Data
• Temperature, All Dies
• Temperature Set Point
- Digital display of:
• Test Mode
• Operation Mode
• Test File Name
- Printed Data Output Options:
• Single Test
• Overlay Multiple Tests
• Overlay Historic Tests
- Display Data Output Options:
• Test In Progress
• Historic Single Test
• Overlay Historic Multiple Tests
• Apply different parameters to historic results for an “if—then—else” analysis.
XDR® eXchangeable Die Rheometer: Module and System Pricing
| Please visit the ODR and Viscometer pages to learn more about the flexibility of the XDR®. Detailed technical aspects of the XDR® are examined at length in the article titled “Innovations”.
Index Terms: ASTM D1646, D1646, Standard Test Methods for Rubber — Viscosity, Stress Relaxation, and Pre - Vulcanization Characteristics (Mooney Viscometer), Mooney Viscometer, viscometer, curing characteristics, Mooney, stress relaxation, viscosity, vulcanization characteristics, 83.060, rubber cure, shearing disk, viscosity, pre-vulcanization characteristics, Delta Mooney value, defined shear rate, Oscillating Disk Rheometer, ASTM D2084, D2084, Standard Test Method for Rubber Property - Vulcanization Using Oscillating Disk Cure Meter, compounds, ODR, oscillating disk cure meter, oscillating disk curemeter, oscillating disk rheometer, vulcanization characteristics, rheometer, ASTM D5289, D5289, Standard Test Method for Rubber Property — Vulcanization Using Rotorless Cure Meters, Moving Die Rheometer, MDR, curemeters, rotorless cure meter, rotorless curemeter, ASTM D6601, D6601, Standard Test Method for Rubber Properties - Measurement of Cure and After - Cure Dynamic Properties Using a Rotorless Shear Rheometer, dynamic properties, loss modulus, rotorless oscillating shear rheometer, storage modulus, rubber, rheology, cure behavior, ISO 6721, ISO 3417, ISO 6502, ISO/R 289, ISO 289, BS 903, BS ISO 6502, BS ISO 289-4