Iranian Journal of Materials Science and Engineering

en A Systematic Study on Mechanical Properties of CNT Reinforced HDPE Composites Developed Using 3D Printing Research Paper Research Paper Several extensive researches are being carried out in the field of 3D printing. Polymer matrices, such as High-Density Polyethylene (HDPE), are less explored in particular on the microstructure and mechanical properties of HDPE composites developed via Fused Deposition Modelling (FDM) process. Very scarce amount of works is devoted to study HDPE’s reinforced with carbon nano-tubes (CNT’s) . In the present work, we report on the mechanical properties of  HDPE composites prepared via FDM process. Varying proportions of CNTs ( 0.5, 1, 1.5 and 2%) are used as reinforcements. It is found that increasing CNT content enhances impact and tensile strength, with HDPE/2.0%CNT outperforming pure HDPE by approximately 71.6% and 25.4%, respectively. HDPE/2.0%CNT composite also showed Young's modulus approximately 49.2% higher than pure HDPE. According to fracture analysis, pure HDPE failed near ductile, whereas composites failed brittle. CNTs occupy the free positions in the polymeric chains, and their tendency to restrict chain mobility causes HDPE to lose ductility and begin to behave brittle. The use of CNTs as reinforcement successfully improved the mechanical properties of HDPE. Fused deposition modelling,Carbon nanotubes,Mechanical properties,Fracture 1 16 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-4912-1&slc_lang=en&sid=1 Deepak Jagannathana deepakiyer31@gmail.com 1800319475328460017309 1800319475328460017309 Yes Jain University Hiriyannaiah Adarsha adarsha.85@gmail.com 1800319475328460017310 1800319475328460017310 No Jain University Keshavamurthy Ramaiah keshavamurthy.r@gmail.com 1800319475328460017311 1800319475328460017311 No Department of Mechanical Engineering, Dayananda Sagar College of Engineering, Bangalore Ramkumar Prabhud tharakaram56@gmail.com 1800319475328460017312 1800319475328460017312 No Jain University