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<p>This study focuses on the development of natural rubber-based tyre tread formulation with low rolling resistance and antistatic properties. The antistatic and rolling resistance properties of the tyre tread formulations prepared with polypyrrole as functional additive is compared with the standard formulation. Conducting polypyrrole (PPy) was synthesised via chemical oxidation of pyrrole using p-toluenesulfonic acid (p-TSA) as dopant and ammonium persulfate (APS) as the initiator and as synthesised polypyrrole was characterised using IR, XRD, TGA, and FESEM analyses. Both doped (PPy) and dedoped (dPPy) forms of polypyrrole were used as conductive reinforcing additives to enhance performance characteristics. Various loadings of PPy and dPPy were incorporated into the base formulation by partially replacing carbon black (CB) to enhance the antistatic property and low rolling resistance property. Truck tyre tread compounds were prepared by replacing CB with 5, 10, and 15 phr of dPPy as the conducting form of polypyrrole adversely affect the curing properties of the compound. The low rolling resistance property of the tread formulation was studied through temperature sweep in dynamic mechanical analysis, and improvement in antistatic properties via conductivity study. The incorporation of dPPy significantly improved the antistatic behaviour and it reduce the low rolling resistance by up to 40% on comparing the rolling resistance of base formulation, achieving a value of 0.104. The partial replacement of CB with polypyrrole maintained the curing as well as performance characteristics in terms of mechanical, dynamic mechanical and conducting properties within the required range of a tyre tread formulation.</p>

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Engineering antistatic, low hysteresis tyre treads through synergistic use of ternary filler system of carbon black, silica, and polypyrrole

  • 期刊论文

  • 发表日期：

    2026年6月25日

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  • Jiby M. Isaac,
  • V. Bijina,
  • Thiruppathi Murugesan,
  • P. J. Jandas,
  • Rinku Mariam Thomas,
  • Sunil K. Narayanankutty,
  • Honey John

摘要

This study focuses on the development of natural rubber-based tyre tread formulation with low rolling resistance and antistatic properties. The antistatic and rolling resistance properties of the tyre tread formulations prepared with polypyrrole as functional additive is compared with the standard formulation. Conducting polypyrrole (PPy) was synthesised via chemical oxidation of pyrrole using p-toluenesulfonic acid (p-TSA) as dopant and ammonium persulfate (APS) as the initiator and as synthesised polypyrrole was characterised using IR, XRD, TGA, and FESEM analyses. Both doped (PPy) and dedoped (dPPy) forms of polypyrrole were used as conductive reinforcing additives to enhance performance characteristics. Various loadings of PPy and dPPy were incorporated into the base formulation by partially replacing carbon black (CB) to enhance the antistatic property and low rolling resistance property. Truck tyre tread compounds were prepared by replacing CB with 5, 10, and 15 phr of dPPy as the conducting form of polypyrrole adversely affect the curing properties of the compound. The low rolling resistance property of the tread formulation was studied through temperature sweep in dynamic mechanical analysis, and improvement in antistatic properties via conductivity study. The incorporation of dPPy significantly improved the antistatic behaviour and it reduce the low rolling resistance by up to 40% on comparing the rolling resistance of base formulation, achieving a value of 0.104. The partial replacement of CB with polypyrrole maintained the curing as well as performance characteristics in terms of mechanical, dynamic mechanical and conducting properties within the required range of a tyre tread formulation.