contributor author | Idowu, Adeyinka | |
contributor author | Thomas, Tony | |
contributor author | Boesl, Benjamin | |
contributor author | Agarwal, Arvind | |
date accessioned | 2023-08-16T18:38:56Z | |
date available | 2023-08-16T18:38:56Z | |
date copyright | 12/12/2022 12:00:00 AM | |
date issued | 2022 | |
identifier issn | 1087-1357 | |
identifier other | manu_145_4_041003.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4292268 | |
description abstract | A cryo-system-assisted extrusion three-dimensional printing technique has been developed to fabricate Shape Memory Polymer Epoxy (SMPE) thermoset into a near-net shape. With a unique cryogenic sprayer-assisted printing system, it is possible to 3D print “pure” thermoset polymer, otherwise limited to thermoplastic or highly functionalized co-polymeric thermoset systems. The temperature was maintained below 10 °C to immobilize the polymeric chain at the atomic level. Nanoplatelet (GNP) reinforced SMPE ink was synthesized to be compatible with cryo-assisted extrusion 3D printing of shape memory composites. The addition of a mere 0.1 wt% GNP exhibited 15% faster shape recovery due to improved thermal conductivity, evidence of a strong interface between GNP and the polymer matrix. Also, GNP addition imparted a 30% improvement in the ultimate tensile strength and a 17% increase in 3D-printed composites’ elastic modulus. Mechanical testing showed that the addition of 0.1 wt% GNP in SMPE increased the composite's storage modulus by 365% and loss tangent by 66% compared to pure 3D-printed SMPE, indicating enhanced damping characteristics. This study is the first to demonstrate a non-existent 3D printing technology for “pure thermoset” polymers with and without conductive graphene that has the potential to develop an energy-efficient actuation system, passive thermal sensors, and self-deployable communication system structures. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Cryo-Assisted Extrusion Three-Dimensional Printing of Shape Memory Polymer–Graphene Composites | |
type | Journal Paper | |
journal volume | 145 | |
journal issue | 4 | |
journal title | Journal of Manufacturing Science and Engineering | |
identifier doi | 10.1115/1.4056170 | |
journal fristpage | 41003-1 | |
journal lastpage | 41003-8 | |
page | 8 | |
tree | Journal of Manufacturing Science and Engineering:;2022:;volume( 145 ):;issue: 004 | |
contenttype | Fulltext | |