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<p>In many engineering elastomeric-based applications, ethylene propylene diene monomer (EPDM) is used as a key engineering material, and the addition of compatible macro and nano fillers can improve the performance of this base material. In this work, amine-functionalized graphene nanoplatelets (AGNP) particles are used as the filler material to get better dispersion and interfacial interaction with the matrix. To study the effect of AGNP filler content on the EPDM matrix, different composites were developed by varying the AGNP content from 0 to 25 phr in steps of 5 phr. From the mechanical properties of developed composites following the grey relational analysis (GRA) approach, the optimum filler content is determined and is found to be 15phr. The optimized rubber composite yielded an enhancement in tensile strength, elongation at break, 100% modulus, tear strength, hardness, and compression set of 125%, 64%, 70%, 203%, 27%, and 20%, respectively, compared with that of the virgin EPDM blend. Morphological and infrared spectroscopic studies were also carried out to ensure the presence and uniform distribution of fillers. Further studies, namely diffusion kinetics, thermal stability, damping, and dielectric property studies on the virgin EPDM blend and the optimized content of AGNP-filled EPDM (OAE) nanocomposite, were carried out to compare and analyse the effect of optimum AGNP filler content on these properties of virgin EPDM blend. Further suitable mathematical models are identified to gain a deeper understanding of the solvent diffusion (Higuchi model, Korsmeyer-Peppas, Peppas-Sahlin model) and thermal degradation kinetics (the Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink, Augis-Bennett/Boswell (ABB) and Tang methods) behaviours.</p>

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Effect of filler on mechanical properties, diffusion kinetics, thermal stability, damping and dielectric properties of EPDM-AGNP nanocomposites

  • 期刊论文

  • 发表日期：

    2025年4月26日

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  • S. Ganeshkumar,
  • S. Vishnu,
  • K. Senthilvel,
  • B. Prabu

摘要

In many engineering elastomeric-based applications, ethylene propylene diene monomer (EPDM) is used as a key engineering material, and the addition of compatible macro and nano fillers can improve the performance of this base material. In this work, amine-functionalized graphene nanoplatelets (AGNP) particles are used as the filler material to get better dispersion and interfacial interaction with the matrix. To study the effect of AGNP filler content on the EPDM matrix, different composites were developed by varying the AGNP content from 0 to 25 phr in steps of 5 phr. From the mechanical properties of developed composites following the grey relational analysis (GRA) approach, the optimum filler content is determined and is found to be 15phr. The optimized rubber composite yielded an enhancement in tensile strength, elongation at break, 100% modulus, tear strength, hardness, and compression set of 125%, 64%, 70%, 203%, 27%, and 20%, respectively, compared with that of the virgin EPDM blend. Morphological and infrared spectroscopic studies were also carried out to ensure the presence and uniform distribution of fillers. Further studies, namely diffusion kinetics, thermal stability, damping, and dielectric property studies on the virgin EPDM blend and the optimized content of AGNP-filled EPDM (OAE) nanocomposite, were carried out to compare and analyse the effect of optimum AGNP filler content on these properties of virgin EPDM blend. Further suitable mathematical models are identified to gain a deeper understanding of the solvent diffusion (Higuchi model, Korsmeyer-Peppas, Peppas-Sahlin model) and thermal degradation kinetics (the Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink, Augis-Bennett/Boswell (ABB) and Tang methods) behaviours.