Rubber Rheometer – Elastomer Testing Equipment

Are you looking to measure the dynamic and static characteristics of raw rubber compounds and elastomers during the curing process?

As a manufacturer of advanced material testing instruments, we are committed to providing customer-oriented solutions. Bareiss introduces a state-of-the-art rubber process analyzer equipped with advanced features. Our versatile RPA Ultra is the first dynamic mechanical rheological tester with full rotation capabilities.

RPA Ultra Standards

ASTM D5289 | ASTM D6204 | ASTM D6601 | ASTM D6048 | ASTM D7050 | ASTM D7605 | DIN 53529 | ISO 13145 | ISO 6502

All RPA’s in the market are limited in strain (up to 360° of arc) and shear rate (up to 30 1/s). With the RPA Ultra from Bareiss Prüfgeratebau GmbH in Germany strain and shear rate moves in a completely new high level for material characterization.

The RPA Ultra can be used to characterize polymers, mixtures and foods. The dynamic specifications are just as unique as the operational capability of the device. Thanks to the special and unique construction, now the lower test chamber of the device can also be rotated, which means that amplitudes beyond 360° are possible as well.

To measure the transient viscosity (steady shear viscosity), shear rates of 500s-1 can be initially generated, thus serving as important input parameters for the simulation and characterization/assessment of extrusion and injection molding. The results can be followed on a precise 12“touch display and then transmitted to the BareissOne platform, via Ethernet, for assessment.

The Bareiss RPA Ultra represents a significant leap forward in rubber testing technology, offering unparalleled capabilities for comprehensive material characterization:

1- Innovative Design

• Fully rotational lower die for expanded testing range
• Sealed biconical dies to reduce slippage during testing
• Retractable casters for easy mobility

2- Enhanced Measurement Capabilities

• Steady shear viscosity measurements
• Mooney viscosity simulation
• Correlation with capillary rheometer data
• Shear rate range from 0.001 to 500 1/s
• Frequency breakthrough up to 100 Hz
• High sampling rate for improved data resolution

3- Comprehensive Testing Suite

• Isothermal cure curve tests
• Non-isothermal (temperature sweep) tests
• Kinetics tests
• Frequency sweep tests
• Stress relaxation studies

4- Advanced Data Analysis

• BareissOne software platform for seamless operation and analysis
• Modularized design for integrated test categories
• Kinetic calculations module
• Custom reporting and data export capabilities
• User authorization and version control features

5- Key Benefits

• Expanded testing capabilities beyond traditional RPAs
• Improved correlation with production processes
• Enhanced compound characterization
• Higher signal-to-noise ratio for Fourier Transform Rheology
• Early detection of processability issues

6- Applications

• Rubber compound optimization
• Quality control in manufacturing
• Research and development of new formulations
• Process parameter optimization for extrusion and injection molding

Conclusion

The Bareiss RPA Ultra, with its high sampling rate and powerful BareissOne software, offers rubber technologists, polymer scientists, and quality control laboratories an all-in-one solution for advanced rheological analysis, setting a new standard in the industry for accuracy, versatility, and ease of use!

“For many of our customers, we are not just a supplier, but a valued partner and consultant, on everything related to hardness testing – I am proud of that!”

~ Katrin Shen
Managing Director & Partner Head of Sales and Marketing

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