Which information does the combination of DMA and DEA provide for the manufacturer in the rubber industry?

The improvement of performance profiles of rubber products require a detailed knowledge about their internal molecular structure and morphology.
Apart from the rubber and necessary additives, the fillers used have a crucial role to play in establishing the final product characteristics. During application, the fillers used develop “their own life” within the rubber matrix depending on the static and dynamic loads applied. Effects like breaking of crosslinks or a mechanical breakdown of carbon black cluster caused by mechanical loading have a considerable impact on the final material properties. Observation of such behavior on a molecular scale during mechanical loading was not possible up to now.
Only the combination of simultaneous High Force DMA and DEA using our new NETSCH GABO DiPLEXOR helps to analyze during dynamic loading the relationship between dynamic change in the morphology of rubber materials and their viscoelastic properties.
DMA generates the mechanical load and considers the sample response while DEA enables the researcher, rubber formulators and finished parts manufacturers the monitoring of dynamic changes of the rubber matrix and filler network during mechanical loading.

April 25, 2019

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