Enhanced thermal conductivity and fire safety of flexible hybrid film via synergistic effects between boron nitride and functionalized graphene

2021 ◽  
Author(s):  
Bing Chen ◽  
Yingchun Liu ◽  
Kun Wu ◽  
Maoping Lu ◽  
Enxiang Jiao ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Fire Safety ◽  
Hybrid Film ◽  
Synergistic Effects ◽  
Functionalized Graphene ◽  
Enhanced Thermal Conductivity

scholarly journals 3D Printing of PDMS-Like Polymer Nanocomposites with Enhanced Thermal Conductivity: Boron Nitride Based Photocuring System

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 373 ◽  
Author(s):  
Lorenzo Pezzana ◽  
Giacomo Riccucci ◽  
Silvia Spriano ◽  
Daniele Battegazzore ◽  
Marco Sangermano ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Analysis ◽  
Boron Nitride ◽  
Thermal Analyses ◽  
Tensile Tests ◽  
Morphological Characterization ◽  
Digital Light Processing ◽  
Form Complex ◽  
K Value ◽  
Enhanced Thermal Conductivity

This study demonstrates the possibility of forming 3D structures with enhanced thermal conductivity (k) by vat printing a silicone–acrylate based nanocomposite. Polydimethylsiloxane (PDSM) represent a common silicone-based polymer used in several applications from electronics to microfluidics. Unfortunately, the k value of the polymer is low, so a composite is required to be formed in order to increase its thermal conductivity. Several types of fillers are available to reach this result. In this study, boron nitride (BN) nanoparticles were used to increase the thermal conductivity of a PDMS-like photocurable matrix. A digital light processing (DLP) system was employed to form complex structures. The viscosity of the formulation was firstly investigated; photorheology and attenuate total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) analyses were done to check the reactivity of the system that resulted as suitable for DLP printing. Mechanical and thermal analyses were performed on printed samples through dynamic mechanical thermal analysis (DMTA) and tensile tests, revealing a positive effect of the BN nanoparticles. Morphological characterization was performed by scanning electron microscopy (SEM). Finally, thermal analysis demonstrated that the thermal conductivity of the material was improved, maintaining the possibility of producing 3D printable formulations.

Enhanced thermal conductivity of graphene/polyimide hybrid film via a novel “molecular welding” strategy

Carbon ◽  
2018 ◽  
Vol 126 ◽  
pp. 319-327 ◽  
Author(s):  
Haoliang Li ◽  
Sichang Dai ◽  
Jie Miao ◽  
Xian Wu ◽  
Navya Chandrasekharan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Hybrid Film ◽  
Enhanced Thermal Conductivity
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