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Abstract

To improve performance properties in conventional system (CV) of Styrene butadiene rubber (SBR) without sacrificing processing advantages, a systematic study was carried out using a co-crosslinkable processing aid, Trans-polyoctenylene (TOR) in SBR. Different curing systems, i.e., CV, Semi-Efficient (SEV), Efficient (EV) vulcanizing system are included in the study under anaerobic aging conditions. Optimum cure time increases and reversion resistance improves with compounds containing TOR. Retention of network properties improves on anaerobic aging with compounds containing TOR in CV and SEV systems. Correlation of modulus shows that 10 parts TOR in CV system can retain modulus well above that of compounds without TOR in EV system on anaerobic aging. Improved retention is due to co-crosslinking of the TOR phase which has been explained through differential scanning calorimetry (DSC) study.

Keywords

co-crosslinks overture reversion resistance fracture energy enthalpy change tan δ

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Effect of High Crystalline Trans-Polyoctenylene (TOR) on Different Cure System of SBR Compounds

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