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<p>The curing process, particularly the selection of appropriate curing agents, plays a pivotal role in tailoring the rheological performance and compatibility of magnetorheological elastomer (MRE). While the curing behavior of silicone rubber is well documented, the effect of organosilane-based curing agents on the compatibility and dynamic properties of MRE remains insufficiently explored. This study investigates the influence of three organosilane curing agents namely vinyltrimethoxysilane, methyltrimethoxysilane, and tetraethoxysilane (TEOS) in comparison to a commercial curing agent, on the rheological and compatibility characteristics of MRE. The materials were synthesized by incorporating carbonyl iron particles into a rubber matrix and cured at ambient conditions. Oscillatory shear rheometry revealed that MRE cured with TEOS exhibited significantly higher initial storage modulus value and the highest absolute magnetorheological (MR) effect of 256&#xa0;kPa. Complementary molecular dynamics simulations showed that TEOS-cured MRE demonstrated superior compatibility, indicated by the highest binding energy (5320&#xa0;kcal/mol), cohesive energy density (6.69 × 10⁷ J/cm<sup>3</sup>), and solubility parameter (8.52 (J/cm<sup>3</sup>)<sup>1/2</sup>). These findings suggest that TEOS promotes stronger interactions between the silicone matrix and iron particles, enhancing the overall performance of MRE. This integrated experimental–computational approach underscores the significance of organosilane in designing high-performance inorganic-organosilicone hybrid elastomers for smart material applications.</p>

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Experimental and Computational Insights into Organosilane-Cured Silicone-Based Magnetorheological Elastomer for Smart Energy Storage Applications

  • 期刊论文

  • 发表日期：

    2025年12月2日

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  • Nurul Hakimah Lazim,
  • Mohd Aidy Faizal Johari,
  • Saiful Amri Mazlan,
  • Nur Azmah Nordin,
  • Shahir Mohd Yusuf,
  • Abdul Yasser Abd Fatah,
  • Siti Aisyah Shamsudin

摘要

The curing process, particularly the selection of appropriate curing agents, plays a pivotal role in tailoring the rheological performance and compatibility of magnetorheological elastomer (MRE). While the curing behavior of silicone rubber is well documented, the effect of organosilane-based curing agents on the compatibility and dynamic properties of MRE remains insufficiently explored. This study investigates the influence of three organosilane curing agents namely vinyltrimethoxysilane, methyltrimethoxysilane, and tetraethoxysilane (TEOS) in comparison to a commercial curing agent, on the rheological and compatibility characteristics of MRE. The materials were synthesized by incorporating carbonyl iron particles into a rubber matrix and cured at ambient conditions. Oscillatory shear rheometry revealed that MRE cured with TEOS exhibited significantly higher initial storage modulus value and the highest absolute magnetorheological (MR) effect of 256 kPa. Complementary molecular dynamics simulations showed that TEOS-cured MRE demonstrated superior compatibility, indicated by the highest binding energy (5320 kcal/mol), cohesive energy density (6.69 × 10⁷ J/cm3), and solubility parameter (8.52 (J/cm3)1/2). These findings suggest that TEOS promotes stronger interactions between the silicone matrix and iron particles, enhancing the overall performance of MRE. This integrated experimental–computational approach underscores the significance of organosilane in designing high-performance inorganic-organosilicone hybrid elastomers for smart material applications.