3D ‐printed surface‐modified aluminum nitride reinforced thermally conductive composites with enhanced thermal conductivity and mechanical strength

2021 ◽  
Author(s):  
Seonmin Lee ◽  
Dabin Park ◽  
Jooheon Kim
Keyword(s):  
Thermal Conductivity ◽  
Aluminum Nitride ◽  
Mechanical Strength ◽  
Conductive Composites ◽  
Thermally Conductive ◽  
3D Printed ◽  
Surface Modified ◽  
Enhanced Thermal Conductivity

scholarly journals Surface Modification of Aluminum Nitride to Fabricate Thermally Conductive poly(Butylene Succinate) Nanocomposite

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 148 ◽  
Author(s):  
Zelalem Lule ◽  
Jooheon Kim
Keyword(s):  
Electron Microscopy ◽  
Thermal Conductivity ◽  
Aluminum Nitride ◽  
Thermomechanical Properties ◽  
Butylene Succinate ◽  
Conductivity Enhancement ◽  
Thermally Conductive ◽  
Surface Modified ◽  
Surface Modified Nanoparticles ◽  
Scanning Electron

Biodegradable polymers and their composites are considered promising materials for replacing conventional polymer plastics in various engineering fields. In this study, poly(butylene succinate) (PBS) composites filled with 5% aluminum nitride nanoparticles were successfully fabricated. The aluminum nitride nanoparticles were surface-modified to improve their interaction with the PBS matrix. Field-emission scanning electron microscopy revealed that the nanocomposites with surface-modified nanoparticles had better interface interaction and dispersion in the polymer matrix than those with untreated nanoparticles. The PBS/modified AlN nanocomposites exhibited maximal thermal conductivity enhancement, 63.7%, compared to the neat PBS. In addition, other thermomechanical properties of the PBS nanocomposites were investigated in this study. The nanocomposites also showed a superior storage modulus compared to the neat PBS matrix. In this work, a PBS nanocomposite with suitable thermal conductivity that can be used in various electronic fields was fabricated.

Highly thermally conductive UHMWPE/NG composites with the segregated structure and their application for heat spreader

2020 ◽  
pp. 089270572096564
Author(s):  
Xiao Wang ◽  
Hui Lu ◽  
Jun Chen
Keyword(s):  
Thermal Conductivity ◽  
Laser Flash ◽  
Heating Process ◽  
X Ray Diffraction ◽  
Heat Spreader ◽  
Conductive Composites ◽  
Compression Direction ◽  
Thermal Analyzer ◽  
Thermally Conductive ◽  
Plane Direction

In this work, ultra-high molecular weight polyethylene (UHMWPE)/natural flake graphite (NG) polymer composites with the extraordinary high thermal conductivity were prepared by a facile mixed-heating powder method. Morphology observation and X-ray diffraction (XRD) tests revealed that the NG flakes could be more tightly coated on the surface of UHMWPE granules by mixed-heating process and align horizontally (perpendicular to the hot compression direction of composites). Laser flash thermal analyzer (LFA) demonstrated that the thermal conductivity (TC) of composites with 21.6 vol% of NG reached 19.87 W/(m·K) and 10.67 W/(m·K) in the in-plane and through-plane direction, respectively. Application experiment further demonstrated that UHMWPE/NG composites had strong capability to dissipate the heat as heat spreader. The obtained results provided a valuable basis for fabricating high thermal conductive composites which can act as advanced thermal management materials.

Design of 3D printed bioinspired nacre-like structured materials with significantly enhanced thermal conductivity

2021 ◽  
Vol 118 (13) ◽  
pp. 131903
Author(s):  
Haohuan Wang ◽  
Zhengyong Huang ◽  
Jian Li ◽  
Feipeng Wang ◽  
Zhanzu Feng ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Structured Materials ◽  
3D Printed ◽  
Enhanced Thermal Conductivity

scholarly journals Measurements of Aluminum-Annealed Pyrolytic Graphite Composite Baseplates with Improved Thermal Conductivity

2021 ◽  
Vol 16 (2) ◽  
pp. 042-047
Author(s):  
Yanfei Bian ◽  
SHI Jian-zhou ◽  
XIE Ming-jun ◽  
CAI Meng
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Thermal Management ◽  
Pure Aluminum ◽  
Pyrolytic Graphite ◽  
Aluminum Plate ◽  
Graphite Composite ◽  
Conductive Composites ◽  
Thermal Potential ◽  
Thermally Conductive

Annealed pyrolytic graphite (APG) is a material with thermal conductivity of about 1500 W/(m·K). This property may enable the usage of APG’s thermal potential to develop highly thermally conductive composites for devices requiring effective thermal management. In this paper, APG has been encapsulated in aluminum by brazing, and the thermal properties of Al-APG composite baseplates were measured. The results show that the thermal conductivity of the Al-APG composite baseplates is about 620 W/(m·K), which is four times higher than the pure aluminum plate (152 W/(m·K)).

Manipulating thermal conductivity of polyimide composites by hybridizing micro- and nano-sized aluminum nitride for potential aerospace usage

2019 ◽  
Vol 33 (8) ◽  
pp. 1017-1029 ◽  
Author(s):  
Honglin Luo ◽  
Jikui Liu ◽  
Zhiwei Yang ◽  
Quanchao Zhang ◽  
Haiyong Ao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Aluminum Nitride ◽  
Conductive Polymer ◽  
Total Content ◽  
Thermally Conductive ◽  
Polyimide Composites ◽  
First Time ◽  
Dielectric And Mechanical Properties ◽  
Simple Economic

Electrically insulating yet thermally conductive polymer-based composites are highly sought after in aerospace field. In this work, for the first time, electrically insulating but thermally conductive polyimide (PI) composites are fabricated by simultaneously incorporating micro- and nano-sized aluminum nitride (AlN) particles via a simple, economic, and scalable method of ball milling and subsequent hot-pressing process. The thermal conductivity, dielectric, and mechanical properties of the PI composites depend on the ratio of micro-sized AlN (m-AlN) to nano-sized AlN (n-AlN) and the total content of AlN in the PI composites. The thermal conductivity of the PI composites with 40 wt% m-AlN and 20 wt% n-AlN is 1.5 ± 0.05 W·m−1·K−1, which is 10 times higher than that of bare PI. The PI composites hold a great potential in aerospace industries.

scholarly journals Practical PBT/PC/GNP composites with anisotropic thermal conductivity

RSC Advances ◽  
2019 ◽  
Vol 9 (62) ◽  
pp. 36316-36323 ◽  
Author(s):  
Xiaolei Zheng ◽  
Bianying Wen
Keyword(s):  
Thermal Conductivity ◽  
Polymer Blends ◽  
Preparation Method ◽  
Selective Distribution ◽  
Conductive Composites ◽  
Anisotropic Thermal Conductivity ◽  
Thermally Conductive ◽  
Conductive Fillers

The selective distribution of thermally conductive fillers in a co-continuous polymer blends provides an industrialized preparation method that takes into account both the properties and functions of thermally conductive composites.

Preparation and characterization of surface modified boron nitride epoxy composites with enhanced thermal conductivity

RSC Advances ◽  
2014 ◽  
Vol 4 (83) ◽  
pp. 44282-44290 ◽  
Author(s):  
Jun Hou ◽  
Guohua Li ◽  
Na Yang ◽  
Lili Qin ◽  
Maryam E. Grami ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Thermal Stability ◽  
Boron Nitride ◽  
High Thermal Conductivity ◽  
Epoxy Composites ◽  
Surface Modified ◽  
Enhanced Thermal Conductivity ◽  
Electrical Insulation Properties

The fabricated surface modified boron nitride epoxy composites exhibit high thermal conductivity, superior thermal stability and good mechanical properties while retaining good electrical insulation properties.

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