Dynamic Mechanical Analyzer MCR 702e MultiDrive

Importance of the Topic

Dynamic mechanical analysis under combined axial and torsional loading provides critical insights into anisotropic materials and complex composites, enabling more reliable material selection and design.

Objectives and Overview

This summary outlines the capabilities of the MCR 702e MultiDrive, a versatile platform by Anton Paar that integrates dynamic mechanical analysis (DMA), thermomechanical analysis (TMA), and rheological testing within a single instrument.

Methodology and Instrumentation

• Linear motor with moving-magnet drive and EC-based rotational motor architecture for precise force and torque control
• Measuring systems: three-point bending, single and dual cantilever, tension, compression, shear fixtures (solid circular and rectangular), plate-plate and cone-plate geometries
• Temperature control: CTD 180 HR (–20 to 180 °C Peltier), CTD 600/1000 MDR (–160 to 600 °C or 1000 °C), optional low-temperature units and humidity generator
• QuickConnect and Toolmaster™ for rapid, automatic accessory recognition and alignment
• Linear optical encoder for subnanometer displacement resolution and air bearings for minimal friction

Results and Discussion

The instrument’s combined axial-torsional mode allows determination of complex Young’s (E*) and shear (G*) moduli, and direct measurement of Poisson’s ratio in a single test. The dual-drive concept achieves high torque linearity (down to 0.5 nNm), force sensitivity (0.5 mN), and displacement range (up to 9.4 mm with 10 nm resolution). CFD-optimized measuring cells ensure uniform temperature distribution, while automated accessory handling reduces setup errors and increases throughput.

Benefits and Practical Applications

• One instrument covers DMA in tension, bending, compression, torsion, combined modes, TMA, and rheology
• Enhanced characterization of anisotropic composites, soft materials, polymers, elastomers, foams, and liquids
• Accurate measurement of mechanical transitions (Tg, crosslinking kinetics) and thermal expansion coefficients
• Time-saving single-sample analysis for Poisson’s ratio and direction-dependent property mapping

Future Trends and Opportunities

Integration of in-situ imaging (e.g., confocal microscopy), advanced multi-wave excitation, and data-driven material modelling will further expand capabilities. Custom fixtures for high-pressure, liquid-immersion, or powder analysis and coupling with digital twins promise next-generation material insights.

Conclusion

The MCR 702e MultiDrive redefines dynamic mechanical characterization by combining linear and torsional DMA, TMA, and rheology in a single, high-precision platform. Its modular design, broad temperature range, and automated workflows deliver comprehensive material insights for research and industrial applications.

Reference

No literature references were provided.