Mechanical, Low Velocity Impact, Fatigue and Tribology Behaviour of Silane Grafted Aramid Fibre and Nano-silica Toughened Epoxy Composite


This investigation deals the effects of adding silane-modified nano-silica particle in aramid fibre (Kevlar-49) toughened epoxy resin composite. The principal aim of this research work is to reveal the importance of adding nano-silica particle in various mechanical properties of aramid fibre-reinforced epoxy resin hybrid composite. The aramid fibre and nano-silica particle were surface-treated using 3-Aminopropyltrimethoxysilane (APTMS) via acid hydrolysis process. The tensile and flexural results revealed that the addition of aramide fibre into nano-silica toughened epoxy resin hybrid composite gives improved tensile and flexural strength of 102 MPa and 135 MPa. Similarly, the Izod impact strength of fibre-reinforced nano-silica (1 vol.%) toughened epoxy resin composite gives energy absorption up to 6 J. The drop load impact penetration of composite designation N3 shows very limited penetration than other composite designations. The highest fatigue life of 16,391 cycles was observed for composite designation N3, which contain1 vol.% of nano-silica. Similarly, the composite contains 2 vol.% of nano-silica gives a very lower specific wear rate and coefficient of friction (COF). This high modulus, stiffness, wear resistance and fatigue life improved hybrid composites could be used in automobile power transmission gears, wind turbine blades, blowers, domestic equipment and farm-related machinery.

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Correspondence to Pratibha Dharmavarapu.

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Dharmavarapu, P., Reddy, M.B.S.S. Mechanical, Low Velocity Impact, Fatigue and Tribology Behaviour of Silane Grafted Aramid Fibre and Nano-silica Toughened Epoxy Composite. Silicon (2020).

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  • PMC
  • Aramid fibre
  • Nano-silica
  • Mechanical properties
  • Fatigue
  • Tribology