Enhanced thermo-magnetic and mechanical performance of EPDM composites reinforced with Fe2O3:NiO nanoparticles under magnetic field-assisted vulcanization

IF 1.4 Q2 Physics and Astronomy

Physics Open Pub Date : 2025-09-04 DOI:10.1016/j.physo.2025.100319

Mohammed Muhi Ali , Salih Abbas Habeeb , Mohammed Hamza Al-Maamori

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Abstract

This study investigates the effect of hybrid ferromagnetic (Fe₂O₃) and antiferromagnetic (NiO) nanoparticles on the structural, thermal, magnetic and mechanical properties of ethylene propylene diene monomer (EPDM) rubber composites. Composites with varying Fe₂O₃:NiO weight ratios (1:0.25, 1:1.1, 1:1.5) were synthesized and characterized using techniques such as FTIR, XRD, SEM, AFM, DSC-TGA and VSM. The results revealed that the addition of NiO nanoparticles improved the curing rate, crosslink density, tensile strength and thermal conductivity, with optimal performance observed at 1:1.1 wt% Fe₂O₃:NiO. Magnetic field-assisted vulcanization promoted nanoparticle alignment, leading to enhanced anisotropy and dispersion, which significantly improved the magneto-mechanical performance of the composites. FTIR and XRD confirmed physical interaction without chemical bonding between the fillers and the rubber matrix. The composite containing 1:1.5 wt% Fe₂O₃:NiO demonstrated the highest magnetic response, indicating potential use in magnetorheological elastomer applications.

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Fe2O3:NiO纳米颗粒增强EPDM复合材料在磁场辅助硫化下的热磁和力学性能

研究了铁磁（Fe2O3）和反铁磁（NiO）纳米颗粒杂化对三元乙丙橡胶（EPDM）复合材料结构、热、磁和力学性能的影响。采用FTIR、XRD、SEM、AFM、DSC-TGA、VSM等技术对不同Fe2O3:NiO质量比（1:0.25、1:1.1、1:1.5）的复合材料进行了表征。结果表明，NiO纳米颗粒的加入提高了材料的固化速度、交联密度、抗拉强度和导热系数，其中Fe2O3:NiO质量分数为1:1.1时性能最佳。磁场辅助硫化促进了纳米颗粒的排列，增强了各向异性和分散性，显著提高了复合材料的磁力学性能。FTIR和XRD证实填料与橡胶基体之间存在物理相互作用，但没有化学键。含有1:1.5 wt% Fe2O3:NiO的复合材料表现出最高的磁响应，表明在磁流变弹性体应用中的潜在应用。

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