Abstract
The crosslink density of rubber compounds influences the in-rubber properties of the final product to a great extent. There are several analytical methods available to determine this crosslink density like equilibrium swelling experiments, Temperature Scanning Stress Relaxation (TSSR) measurements, thiol-amine-method, 1H NMR relaxation, stress-strain analysis according to Mooney-Rivlin or to a non-Gaussian tube model of rubber elasticity (dynamic flocculation model, DFM). SSBR/BR model compounds filled with a Silica/Silane system were produced with varying amounts of accelerator and sulfur and investigated with these different analytical methods. The evaluation shows that methods like DFM, TSSR and Mooney-Rivlin correlate very well but that the thiol-amine method is unsuitable for these silica-filled compounds.
Original language | English |
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Pages (from-to) | 33-42 |
Number of pages | 10 |
Journal | KGK Kautschuk Gummi Kunststoffe |
Volume | 72 |
Issue number | 9 |
Publication status | Published - Sept 2019 |
Externally published | Yes |
Keywords
- H NMR relaxation
- Crosslink density
- DFM
- Mooney-Rivlin
- Swelling
- Thiol-amine-method
- TSSR