Abstract

This study examines the mechanical and viscoelastic properties of polymer composites reinforced with ceramic nanoparticles, specifically focusing on enhancing the performance of the material through the incorporation of alumina nanoparticles. The composites were produced by embedding alumina nanoparticles into an epoxy matrix, and their properties were assessed using tensile, flexural, and dynamic mechanical analyses (DMA). The tensile tests showed a remarkable 40% increase in tensile strength and a 35% enhancement in elastic modulus compared to neat epoxy, indicating improved load-bearing capabilities. Flexural testing revealed a 30% increase in flexural strength and a 25% rise in flexural modulus, suggesting enhanced resistance to bending forces. DMA results highlighted a 50% improvement in storage modulus, which points to increased stiffness over a temperature range of 25°C to 200°C. Additionally, the glass transition temperature (Tg) of the composite increased by 15°C, reflecting improved thermal stability. The Coefficient of Thermal Expansion (CTE) measurements indicated a significant reduction, showing better dimensional stability at elevated temperatures due to the presence of ceramic nanoparticles. These findings underscore the potential of ceramic nanoparticle-reinforced polymer composites for high-performance applications where improved mechanical strength, thermal stability, and dimensional accuracy are critical. These characteristics make the composites ideal candidates for use in demanding industries such as aerospace, automotive, and electronics, where materials must withstand extreme conditions while maintaining structural integrity.

Keywords: Ceramic nanoparticle-reinforced composites, mechanical properties, dynamic mechanical analysis (DMA), coefficient of thermal expansion (CTE), epoxy matrix

Keyworde: Ceramic nanoparticle-reinforced composites, mechanical properties, dynamic mechanical analysis (DMA), coefficient of thermal expansion (CTE), epoxy matrix

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