Effect of Alumina Contents on the Physicomechanical Properties of Alumina (Al2O3) Reinforced Polyester Composites

Abstract

Polyester-based composites filled with various contents of alumina (Al2O3) (i.e., 0, 1, 5, and 10 vol%) have been fabricated in this study. Physical and mechanical properties of the composites have also been analysed. The analysis results showed that the experimental density of the polyester/alumina composites was smaller than the theoretical density, which could be attributed to the formation of voids during preparation of the composites. Meanwhile, the tensile strength, stiffness, and hardness of the composites increased with increasing alumina content, while the strain-at-break of the composites decreased. It was observed that the composites containing 5 vol% of alumina had the best tensile strength, stiffness, and hardness. The uniform distribution and dispersion of alumina particles were likely responsible for the improvement of the mechanical properties. In other hand, small decrease in tensile strength, stiffness, and hardness of composite was found in the composites with 10 vol% of alumina. The formation of agglomerates and voids was believed to be the main factor for the decrease of the both properties.

Effect of Al2O3 on the Tensile and Impact Strength of Flax/Unsaturated Polyester Composite with Emphasis on Automobile Body Applications

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Mechanical Properties of Fiber Reinforced Polymer Composites

“…These resins are classified under thermosetting and have wide range of applications such as buildings, water pipes, automotive etc. [16]. To study the properties of polyester resin in various fibers, some researchers tested the fabricated specimen using water absorption test and then determined the mechanical properties.…”

Hybrid polymer matrix composite (UHMWPE‐HPMC) as solid particle erosion resistant coating for sharp pipe elbows using numerical simulation and experimental analysis

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“…7 These simultaneous effects of modes lead to lateral crack propagation in brittle mode and microdamages accumulation and fatigue impact in ductile materials. The impact energy can be categorized in normal (elastic impact), 4 normal (plastic impact), 6 normal (elastic/plastic impact), and oblique (elastic/plastic impact). 10 Normal elastic/ plastic impact is the most common, which is a combination of elastically released kinetic energy and heat due to internal friction.…”