Comparative Properties of Styrene-Butadiene Rubbers (SBR) Containing Pyrolytic Carbon Black, Conventional Carbon Black, and Organoclay

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Abstract

To evaluate the reinforcing potential of pyrolytic carbon black, styrene-butadiene rubber (SBR) was filled with pelletized pyrolytic carbon black (pCBp), N660 industrial CB, their blend in a 1/1 ratio, and the latter also in the absence and presence of additional organoclay (OC). The Shore A hardness of the filled SBR gums was 65 ± 2°. Effects of the compositions on the filler dispersion, cure behavior, dynamic mechanical thermal parameters (including the Payne effect), tensile mechanical (including the Mullins effect), and fracture mechanical (making use of the J-integral concept) properties were studied and discussed. Though pCBp had a higher specific surface weight than CB, the latter proved to be a more active filler with respect to the tensile strength. The opposite tendency was found for the tear strength and fracture mechanics characteristics (J-integral at crack tip opening, tearing modulus, and trouser tear strength). This was traced to an enlargement in the crack tip damage zone supported by the dispersion characteristics of the pCBp. The performance of pCBp was similar to that of CB with respect to some other properties. OC supported the filler networking which positively affected the resistance to crack initiation.

Original languageEnglish
Pages (from-to)749-763
Number of pages15
JournalJournal of Macromolecular Science - Physics
Volume55
Issue number7
DOIs
Publication statusPublished - Jul 2 2016

Fingerprint

Soot
Organoclay
butadiene
Carbon black
Butadiene
fillers
rubber
styrenes
J integral
Fillers
Styrene
Rubber
crack tips
Crack tips
carbon
tearing
fracture mechanics
crack initiation
Crack initiation
Fracture mechanics

Keywords

  • carbon black
  • crack tip opening displacement
  • J-integral
  • mechanical properties
  • Mullins effect
  • Payne effect
  • pyrolytic carbon black
  • styrene-butadiene rubber

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Chemistry
  • Polymers and Plastics
  • Chemistry(all)

Cite this

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title = "Comparative Properties of Styrene-Butadiene Rubbers (SBR) Containing Pyrolytic Carbon Black, Conventional Carbon Black, and Organoclay",
abstract = "To evaluate the reinforcing potential of pyrolytic carbon black, styrene-butadiene rubber (SBR) was filled with pelletized pyrolytic carbon black (pCBp), N660 industrial CB, their blend in a 1/1 ratio, and the latter also in the absence and presence of additional organoclay (OC). The Shore A hardness of the filled SBR gums was 65 ± 2°. Effects of the compositions on the filler dispersion, cure behavior, dynamic mechanical thermal parameters (including the Payne effect), tensile mechanical (including the Mullins effect), and fracture mechanical (making use of the J-integral concept) properties were studied and discussed. Though pCBp had a higher specific surface weight than CB, the latter proved to be a more active filler with respect to the tensile strength. The opposite tendency was found for the tear strength and fracture mechanics characteristics (J-integral at crack tip opening, tearing modulus, and trouser tear strength). This was traced to an enlargement in the crack tip damage zone supported by the dispersion characteristics of the pCBp. The performance of pCBp was similar to that of CB with respect to some other properties. OC supported the filler networking which positively affected the resistance to crack initiation.",
keywords = "carbon black, crack tip opening displacement, J-integral, mechanical properties, Mullins effect, Payne effect, pyrolytic carbon black, styrene-butadiene rubber",
author = "P. Berki and J. Karger-Kocsis",
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AB - To evaluate the reinforcing potential of pyrolytic carbon black, styrene-butadiene rubber (SBR) was filled with pelletized pyrolytic carbon black (pCBp), N660 industrial CB, their blend in a 1/1 ratio, and the latter also in the absence and presence of additional organoclay (OC). The Shore A hardness of the filled SBR gums was 65 ± 2°. Effects of the compositions on the filler dispersion, cure behavior, dynamic mechanical thermal parameters (including the Payne effect), tensile mechanical (including the Mullins effect), and fracture mechanical (making use of the J-integral concept) properties were studied and discussed. Though pCBp had a higher specific surface weight than CB, the latter proved to be a more active filler with respect to the tensile strength. The opposite tendency was found for the tear strength and fracture mechanics characteristics (J-integral at crack tip opening, tearing modulus, and trouser tear strength). This was traced to an enlargement in the crack tip damage zone supported by the dispersion characteristics of the pCBp. The performance of pCBp was similar to that of CB with respect to some other properties. OC supported the filler networking which positively affected the resistance to crack initiation.

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