Vertically Aligned and Interconnected SiC Nanowire Networks Leading to Significantly Enhanced Thermal Conductivity of Polymer Composites

2018 ◽  
Vol 10 (11) ◽  
pp. 9669-9678 ◽  
Author(s):  
Yimin Yao ◽  
Xiaodong Zhu ◽  
Xiaoliang Zeng ◽  
Rong Sun ◽  
Jian-Bin Xu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Vertically Aligned ◽  
Nanowire Networks ◽  
Enhanced Thermal Conductivity

Constructing Three-dimensional Nano-crystalline Diamond Network within Polymer Composites for Enhanced Thermal Conductivity

Nanoscale ◽  
2021 ◽  
Author(s):  
Shaoyang Xiong ◽  
Yue Qin ◽  
Linhong Li ◽  
Guoyong Yang ◽  
Maohua Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Thermal Performance ◽  
Thermal Transport ◽  
High Performance ◽  
Rapid Development ◽  
Electronic Devices ◽  
Three Dimensional ◽  
Nano Crystalline ◽  
Enhanced Thermal Conductivity

In order to meet the requirement of thermal performance with the rapid development of high-performance electronic devices, constructing a three-dimensional thermal transport skeleton is an effective method for enhancing thermal...

Thermal Interface Materials From Vertically Aligned Polymer Nanotube Arrays

2013 ◽  
Author(s):  
Thomas L. Bougher ◽  
Virendra Singh ◽  
Baratunde A. Cola
Keyword(s):  
Thermal Conductivity ◽  
Amorphous Polymer ◽  
Quartz Substrate ◽  
Applied Pressure ◽  
Thermal Interface Material ◽  
Bonding Pressure ◽  
Thermal Interface ◽  
Vertically Aligned ◽  
Conductive Fillers ◽  
Enhanced Thermal Conductivity

A number of studies have reported enhancing the thermal conductivity of semi-crystalline polymers through mechanical stretching, but practical application of this process has proven difficult. Here we demonstrate the application of enhanced thermal conductivity in a purely amorphous polymer for a thermal interface material (TIM) without conductive fillers. Many polymer-based TIMs contain carbon fillers to enhance the thermal conductivity, however the TIMs reported herein are comprised solely of polymer nanotubes. The conjugated polymer polythiophene (Pth) is electropolymerized in nanotemplates to produce arrays of vertically aligned nanotubes, which adhere well to opposing substrates through van der Waals forces. We find that the total thermal resistances of the Pth-TIMs are a strong function of height with some dependence on bonding pressure, yet independent of applied pressure after bonding. Photoacoustic measurements show that the total thermal resistance of the TIMs ranges from 9.8 ± 3.8 to 155 ± 32 mm2-K/W depending on the array height and bonding pressure. Estimates of the component resistances indicate that the majority of the resistance is in the contact between the nanotube free tips and the opposing quartz substrate. These Pth-TIMs demonstrate that enhanced thermal conductivity polymers can be suitable for heat transfer materials without thermally conductive fillers.

Enhanced thermal conductivity by combined fillers in polymer composites

2019 ◽  
Vol 676 ◽  
pp. 198-204 ◽  
Author(s):  
Haitong Li ◽  
Wei Chen ◽  
Jinzao Xu ◽  
Jia Li ◽  
Lin Gan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Enhanced Thermal Conductivity

Design of network Al2O3 spheres for significantly enhanced thermal conductivity of polymer composites

2020 ◽  
Vol 128 ◽  
pp. 105673 ◽  
Author(s):  
Yuge Ouyang ◽  
Fei Ding ◽  
Liuyang Bai ◽  
Xiaofei Li ◽  
Guolin Hou ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Enhanced Thermal Conductivity

scholarly journals Vertically Aligned and Interconnected Graphite and Graphene Oxide Networks Leading to Enhanced Thermal Conductivity of Polymer Composites

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1121 ◽  
Author(s):  
Ziming Wang ◽  
Yiyang Cao ◽  
Decai Pan ◽  
Sen Hu
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
High Performance ◽  
Three Dimensional ◽  
Freezing Temperature ◽  
Thermal Interface Materials ◽  
Vertically Aligned ◽  
Conductive Property ◽  
Efficient Heat Transfer ◽  
Enhanced Thermal Conductivity

Natural graphite flakes possess high theoretical thermal conductivity and can notably enhance the thermal conductive property of polymeric composites. Currently, because of weak interaction between graphite flakes, it is hard to construct a three-dimensional graphite network to achieve efficient heat transfer channels. In this study, vertically aligned and interconnected graphite skeletons were prepared with graphene oxide serving as bridge and support via freeze-casting method. Three freezing temperatures were utilized, and the resulting graphite and graphene oxide network was filled in a polymeric matrix. Benefiting from the ultralow freezing temperature of −196 °C, the network and its composite occupied a more uniform and denser structure, which lead to enhanced thermal conductivity (2.15 W m−1 K−1) with high enhancement efficiency and prominent mechanical properties. It can be significantly attributed to the well oriented graphite and graphene oxide bridges between graphite flakes. This simple and effective strategy may bring opportunities to develop high-performance thermal interface materials with great potential.

Enhanced thermal conductivity of polymer composites filled with hybrid filler

2006 ◽  
Vol 37 (5) ◽  
pp. 727-734 ◽  
Author(s):  
Geon-Woong Lee ◽  
Min Park ◽  
Junkyung Kim ◽  
Jae Ik Lee ◽  
Ho Gyu Yoon
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Hybrid Filler ◽  
Enhanced Thermal Conductivity
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