Investigation on Mechanical and Thermal Properties of 3D-Printed Polyamide 6, Graphene Oxide and Glass-Fibre-Reinforced Composites under Dry, Wet and High Temperature Conditions

This study is focused on 3D printing of polyamide 6 (PA6), PA6/graphene oxide (PA6/GO) and PA6/glass-fibre-reinforced (PA6/GF) composites. The effect graphene glass-fibre reinforcement 3D-printed PA6 explored for improvement the interfacial bond interlaminar strength in ambient, wet high temperature conditions relating to electric car battery box requirements. influence environmental process parameters polymer composites quality also examined. Commercial filament was modified with GO investigate thermal mechanical properties. were melt-compounded using a twin-feed extruder produce an improved 3D-printing filament. filaments then used 3D-print test samples tensile compression testing universal machines characterisation performed following condition treatment water correlation dry/ambient samples. results show studied materials mostly suitable conditions. PA6/GF demonstrated highest all three ambient high-temperature conditions, but least due osmotic pressure at fibre/matrix interface that led fibre breakage. introduction 0.1% by 33%, 11% 23% dry/ambient, dry/high wet/ambient respectively. PA6/GO comparison Notwithstanding this, exhibited condition, making it most high-strength, water-exposed engineering application.