Fabrication of thermoplastic functionally gradient composite parts with anisotropic thermal conductive properties based on multicomponent fused deposition modeling 3D printing. (June 2020)

• Record Type: Journal Article
• Authors: Wang, Jianlei; Mubarak, Suhail; Dhamodharan, Duraisami; Divakaran, Nidhin; Wu, Lixin; Zhang, Xu
• Is Part Of: Composites communications. Volume 19(2020)
• Page Start: 142
• Page End: 146
• Publication Date: 2020-06
• Subjects: Functionally gradient materials -- Thermal conductivity -- Fused deposition modeling -- 3D printing
• DOI: 10.1016/j.coco.2020.03.012
• Languages: English
• ISSNs: 2452-2139

Abstract

Abstract: A multicomponent fused deposition modeling 3D printing approach was proposed to fabricate thermoplastic functionally gradient composite parts (TFGCPs). The thermal conductive properties of the fabricated TFGCPs were studied by slice and as integrate, respectively. The variation of thermal conductivity by slice versus the number of layer shows that the curve of PCL/AlN has a constant slope, while the one of PCL/BN first increases and then decreases. It is attributed to that the network of thermal conduction is constructed when the loading of BN particles approaches 27wt%, leading to a substantial growth in thermal conductivity. The thermal conductivity of the TFGCPs as integrate lies between the one of pure PCL and homogeneous composite parts with AlN or BN fillers and has a relationship with the filler loading direction exhibiting thermal anisotropy. This study establishes the relationship between properties and structures of thermoplastic functionally gradient composite parts, which helps to lay a theoretical foundation of applications as intermediate layers. Graphical abstract: Image 1 Highlights: Thermoplastic functionally gradient composite parts (TFGCPs) were prepared via modified multicomponent fused deposition modeling 3D printing. The thermal conductivity of the TFGCPs as integrate lies between pure PCL and homogeneous composite parts with AlN or BN fillers and has a relationship with the filler loading direction exhibiting thermal anisotropy. This study could provide a novel approach to prepare the TFGCPs by FDM 3D printing, which broadens the application as intermediate layer between two materials with huge difference in thermal expansion coefficient.