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<p>Antioxidants are generally used for prolonging the lifespan of rubber products, while their influences on the vulcanization kinetics and mechanical properties are rarely investigated. Herein, the synergistic roles of conventional antioxidants (6PPD, MB, 2246) and deep eutectic solvent (DES) in natural rubber (NR), styrene-butadiene rubber (SBR), their blends, and the blends filled with carbon black (CB) and black talc (BT) were examined. The results showed that antioxidants and DES influenced the vulcanization kinetics, crosslinking density and mechanical behaviors markedly. A combination of MB and DES resulted in NR/SBR-CB/BT composite vulcanizates with high strength and low dissipation characteristics. DES formed hydrogen bond/ion-pair complexes with antioxidants, and, in NR, interacted with non-rubber constituents, thereby modulating cure intermediates and sulfur-bond distributions, paving the way for preparing high performance rubber composites.</p>

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Influence of Antioxidants and Deep Eutectic Solvent on Vulcanization Kinetics and Mechanical Behaviors of Natural Rubber/Styrene-Butadiene Rubber Blend and Composites

  • 期刊论文

  • 发表日期：

    2026年5月20日

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  • Zi-Ye Liu,
  • Yi-Hu Song,
  • Qiang Zheng

摘要

Antioxidants are generally used for prolonging the lifespan of rubber products, while their influences on the vulcanization kinetics and mechanical properties are rarely investigated. Herein, the synergistic roles of conventional antioxidants (6PPD, MB, 2246) and deep eutectic solvent (DES) in natural rubber (NR), styrene-butadiene rubber (SBR), their blends, and the blends filled with carbon black (CB) and black talc (BT) were examined. The results showed that antioxidants and DES influenced the vulcanization kinetics, crosslinking density and mechanical behaviors markedly. A combination of MB and DES resulted in NR/SBR-CB/BT composite vulcanizates with high strength and low dissipation characteristics. DES formed hydrogen bond/ion-pair complexes with antioxidants, and, in NR, interacted with non-rubber constituents, thereby modulating cure intermediates and sulfur-bond distributions, paving the way for preparing high performance rubber composites.