Company: GÖTTFERT
Göttfert - Knowledge - Large Amplitude Oscillatory Shear (LAOS)
Extended possibilities for characterising polymers and polymer blends with FFT offer high selectivity
The new RPA from Göttfert has been extended to include the functionality of FFT evaluation of the test for strains in the non-linear viscoelastic range Large Oscillatory Scanning (LAOS) and the extension of the oscillatory trion angle to ±360°.
Using the example of a raw rubber, it is shown that the FFT evaluation of the LAOS test and the extension of the oscillation angle provide a significantly higher selectivity in material differentiation.
The oscillation angle of ±360° also makes it possible to determine the transient (stationary) viscosity.
The steady-state viscosity is used to check the Cox-Merz relationship and opens up the possibility of better separating the sliding and adhesive components in the capillary rheometer test in order to obtain better data for machine design.
Products
Grip Engineering – Roller grips
Shimadzu – Very High Cycle Fatigue
Used drying and climate chambers
Rheological testing equipment since 1962
GÖTTFERT Werkstoff-Prüfmaschinen GmbH was founded in 1962 by Prof. Dr. Otto Göttfert. In the second generation, his son Dr Axel Göttfert took over as sole managing director.
On the world market, the medium-sized company is known as one of the leading companies in the niche area of rheological testing equipment. The innovative rheological systems are used worldwide in laboratories as well as in production.
To be closer to many customers, a subsidiary was opened in Rock Hill, South Carolina, USA, in 1989. In 2011, GOETTFERT (China) Limited was founded with headquarters in Beijing and Shanghai.
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