Loading...

Superior fatigue and mechanical properties of ethylene-propylene diene monomer rubber incorporated with Zr-based metal–organic framework

Abdi, B ; Sharif University of Technology | 2023

0 Viewed
  1. Type of Document: Article
  2. DOI: 10.1007/s10965-022-03415-6
  3. Publisher: Springer Science and Business Media B.V , 2023
  4. Abstract:
  5. This research reports the remarkable effects of Zr-based metal–organic framework, i.e. UiO-66, on cross-linked network structure and mechanical behaviors of ethylene-propylene diene monomer (EPDM) rubber under sulfur vulcanization systems. To this end, EPDM rubber was vulcanized with conventional (CV), semi-efficient (SEV) and efficient (EV) vulcanization systems. In addition, EPDM nanocomposites containing 5 phr UiO-66 with all three vulcanization systems were also prepared, for the sake of comparison with their corresponding unfilled samples. While the unfilled EPDM vulcanizates showed expectable behaviors in cross-linking density estimated by swelling experiment and cure-rheometer parameters based on their sulfur content and accelerator/sulfur ratio in each vulcanization system, CV cured EPDM/UiO-66 nanocomposite exhibited completely distinctive characteristics. The special swelling behavior plus exclusive cure kinetics supported by dynamic mechanical analysis led us to postulate a distinctive bimodal cross-linked network morphology including a highly cross-linked rubber shell around UiO-66 along with a lightly cross-linked rubber matrix for CV cured system. This special morphology was attributed to higher sulfur content of CV system which was supposed to be adsorbed by UiO-66 due to its tendency toward sulfur and sulfur containing chemicals. Superior tensile and fatigue properties of CV cured EPDM/UiO-66 were also explained by such morphological model. © 2022, The Polymer Society, Taipei
  6. Keywords:
  7. EPDM rubber ; Fatigue ; Morphology ; Nanocomposite ; UiO-66 ; Vulcanization system
  8. Source: Journal of Polymer Research ; Volume 30, Issue 1 , 2023 ; 10229760 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10965-022-03415-6