Physico-mechanical properties and thermal stability of thermoset nanocomposites based on styrene-butadiene rubber/phenolic resin blend

Shojaei, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.msea.2009.10.022
  3. Abstract:
  4. Effect of organoclay (OC) on the performance of styrene-butadiene rubber (SBR)/phenolic resin (PH) blend prepared by two-roll mill was investigated. The influence of OC content ranging between 2.5 and 30 phr on the performance of SBR/PH was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), interfacial energy analysis, tensile, dynamic mechanical, swelling, cure rheometry and thermogravimetric analysis (TGA). It was found that the OC is mainly localized in the SBR phase of SBR/PH blend through the kinetically favored mechanism relevant to rubber chains. The results also demonstrated the positive role of PH on the dispersion of OC. Both PH and OC showed accelerating role on the cure rate of SBR and increased the crosslinking density of the rubber phase. Additionally, the mechanical and dynamic mechanical properties of SBR were influenced by incorporation of both PH and OC. TGA showed that the OC improves thermal stability of SBR vulcanizate, while it exhibits a catalytic role in presence of PH
  5. Keywords:
  6. Energy management ; Mechanical testing ; Nanocomposites ; Thermal degradation ; Catalytic role ; Cross-linking density ; Cure rate ; Dynamic mechanical ; Dynamic mechanical property ; Physicomechanical properties ; Rheometry ; SEM ; Styrene butadiene rubber ; Styrene butadienes ; Thermal degradation ; Thermal degradations ; Thermal stability ; Two-roll mill ; Butadiene ; Curing ; Degradation ; Microstructure ; Interfacial energy ; Mechanical engineering ; Mechanical properties ; Microstructure ; Phase interfaces ; Phenolic resins ; Phenols ; Photodegradation ; Resins ; Rubber ; Scanning electron microscopy ; Styrene ; Thermodynamic stability ; Thermogravimetric analysis ; X ray diffraction ; X ray diffraction analysis ; Pyrolysis ; pH effects ; Dynamics
  7. Source: Materials Science and Engineering A ; Volume 527, Issue 4-5 , 2010 , Pages 917-926 ; 09215093 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0921509309011514