Anisothermal stress relaxation test for characterizing TPE, elastomers and polymers
With the TSSR-Meter conventional isothermal relaxation experiments can be performed as well as the temperature scanning stress relaxation (TSSR), an anisothermal stress relaxation method (AISR method). Using this method the mechanical and thermal properties of TPE, plastics and elastomers can be characterized. The TSSR-Meter is suitable for the development of materials for production support and quality control. With the increasing importance of TPE an important factor, especially in the automotive industry.
 
Applications
The TSSR-Meter is used for many applications, where mechanical and thermal properties are measured. The compression set can be predicted using a temperature limit by means of a linear correlation. Applications of TPE compared to carbon black filled elastomers can clearly be defined. For carbon black filled EPDM compounds additional information can be obtained by anisothermal stress relaxation curves. These characterize the interactions between polymers and carbon black. In addition, the thermal limits of commercial TPE materials can be displayed with the meter TSSR and the various TPE blends can be characterized with the different relaxation spectra. With the TSSR-Index, determined by the TSSR-Meter, materials can be assigned to individual product groups.
 
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TSSR-Meter