Determination of the Crosslink Density of Silica Filled Styrene Butadiene Rubber Compounds by different Analytical Methods

Pilar Bernal-Ortega, Rafal Anyszka (Contributor), Anke Blume* (Contributor)

*Corresponding author for this work

Research output: Contribution to conferencePaper

Abstract

The crosslink density (CLD) of rubber compounds has a great effect on the properties of the final product. For this reason, a suitable characterization method is required to understand and optimize the final performance of rubber materials. Four different experimental techniques were used to determine the crosslink density of silica filled Styrene Butadiene Rubber (SBR) composites: equilibrium swelling experiments, stress-strain measurements using the Mooney Rivlin theory, freezing point depression temperature tests and Temperature Scanning Stress Relaxation (TSSR) measurements. The evaluation of these different techniques shows that the results obtained follow a similar trend for all four methods. The results from the Mooney Rivlin and TSSR measurements correlate the best. These two techniques are the least affected by the presence of fillers and are the less time consuming ones. Furthermore, they also show the best correlation with the mechanical properties of the studied compounds.
Original languageEnglish
Number of pages11
Publication statusPublished - 28 Jun 2022
EventDKT IRC 2021 - Nuremberg, Germany
Duration: 27 Jun 202230 Jun 2022

Conference

ConferenceDKT IRC 2021
Country/TerritoryGermany
CityNuremberg
Period27/06/2230/06/22

Keywords

  • rubber
  • silica
  • silanes
  • crosslink density

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