Epoxy Composites with High Thermal Conductivity by Constructing Three-Dimensional Carbon Fiber/Carbon/Nickel Networks Using an Electroplating Method

This article describes the results of the development of a high thermal conductivity carbon fiber reinforced polymer based on carbon fiber from pitch and an ENPB matrix modified with a carbon powder of high thermal conductivity. Data of the technological scheme of production and the results of determining the physicomechanical and thermophysical characteristics of carbon fiber reinforced polymer are presented.

Download Full-text

Ultrahigh Thermal Conductivity of Epoxy Composites with Hybrid Carbon Fiber and Graphene Filler

Fibers and Polymers ◽

10.1007/s12221-021-3164-2 ◽

2021 ◽

Author(s):

Zulfiqar Ali ◽

Xiangdong Kong ◽

Maohua Li ◽

Xiao Hou ◽

Linhong Li ◽

...

Keyword(s):

Thermal Conductivity ◽

Carbon Fiber ◽

Epoxy Composites ◽

Hybrid Carbon

Download Full-text

Preparation, microstructure and properties of three-dimensional carbon/carbon composites with high thermal conductivity

Carbon ◽

10.1016/j.carbon.2020.10.013 ◽

2021 ◽

Vol 174 ◽

pp. 758-759

Author(s):

Bao-liu Li ◽

Jian-guang Guo ◽

Bing Xu ◽

Hui-tao Xu ◽

Zhi-jun Dong ◽

...

Keyword(s):

Thermal Conductivity ◽

Three Dimensional ◽

High Thermal Conductivity ◽

Carbon Composites ◽

Microstructure And Properties

Download Full-text

Electromagnetic properties of three-dimensional woven carbon fiber fabric/epoxy composite

Textile Research Journal ◽

10.1177/0040517517723022 ◽

2017 ◽

Vol 88 (20) ◽

pp. 2353-2361 ◽

Cited By ~ 8

Author(s):

Wei Fan ◽

Dan-dan Li ◽

Jia-lu Li ◽

Juan-zi Li ◽

Lin-jia Yuan ◽

...

Keyword(s):

Electromagnetic Wave ◽

Carbon Fiber ◽

Electromagnetic Interference ◽

Three Dimensional ◽

Woven Fabric ◽

Epoxy Composites ◽

Woven Composites ◽

Carbon Fiber Fabric ◽

Fiber Fabric ◽

Wave Properties

To investigate the reinforcement architectures effect on the electromagnetic wave properties of carbon fiber reinforced polymer composites, three-dimensional (3D) interlock woven fabric/epoxy composites, 3D interlock woven fabric with stuffer warp/epoxy composites, and 3D orthogonal woven fabric/epoxy composites were studied by the free-space measurement system. The results showed that the three types of 3D woven carbon fiber fabric/epoxy composites had a slight difference in electromagnetic wave properties and the absorption was their dominant radar absorption mechanism. The electromagnetic wave absorption properties of the three types of composites were more than 90% (below −10 dB) over the 11.2–18 GHz bandwidth, and more than 60% (below −4 dB) over the 8–12 GHz bandwidth. Compared with unidirectional carbon fiber reinforced plastics, the three kinds of 3D woven carbon fiber fabric/epoxy composites exhibited better electromagnetic wave absorption properties over a broadband frequency range of 8–18 GHz. Therefore, the three kinds of 3D woven composite are expected to be used as radar absorption structures due to their excellent mechanical properties and outstanding absorption capacity. The total electromagnetic interference shielding effectiveness of the three types of 3D carbon fiber woven composites are all larger than 46 dB over the 8–12 GHz bandwidth, which is evidence that the three types of 3D carbon fiber woven composites can be used as excellent shielding materials for electromagnetic interference.

Download Full-text

A General Expression for the Stagnant Thermal Conductivity of Stochastic and Periodic Structures

Journal of Heat Transfer ◽

10.1115/1.4038449 ◽

2018 ◽

Vol 140 (5) ◽

Cited By ~ 5

Author(s):

X. Bai ◽

C. Hasan ◽

M. Mobedi ◽

A. Nakayama

Keyword(s):

Thermal Conductivity ◽

General Expression ◽

Metal Foam ◽

Solid Angle ◽

Periodic Structures ◽

Three Dimensional ◽

High Thermal Conductivity ◽

Numerical Calculations ◽

The One ◽

Good Agreement

A general expression has been obtained to estimate thermal conductivities of both stochastic and periodic structures with high-solid thermal conductivity. An air layer partially occupied by slanted circular rods of high-thermal conductivity was considered to derive the general expression. The thermal conductivity based on this general expression was compared against that obtained from detailed three-dimensional numerical calculations. A good agreement between two sets of results substantiates the validity of the general expression for evaluating the stagnant thermal conductivity of the periodic structures. Subsequently, this expression was averaged over a hemispherical solid angle to estimate the stagnant thermal conductivity for stochastic structures such as a metal foam. The resulting expression was found identical to the one obtained by Hsu et al., Krishnan et al., and Yang and Nakayama. Thus, the general expression can be used for both stochastic and periodic structures.

Download Full-text

Development of Thermally Conductive Polyurethane Composite by Low Filler Loading of Spherical BN/PMMA Composite Powder

Scientific Reports ◽

10.1038/s41598-019-50985-5 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 5

Author(s):

Kai-Han Su ◽

Cherng-Yuh Su ◽

Cheng-Ta Cho ◽

Chung-Hsuan Lin ◽

Guan-Fu Jhou ◽

...

Keyword(s):

Thermal Conductivity ◽

Heat Dissipation ◽

Three Dimensional ◽

Filler Loading ◽

High Thermal Conductivity ◽

Heat Diffusion ◽

Composite Powders ◽

Polyurethane Composite ◽

Uniform Dispersion ◽

Thermally Conductive

Abstract The issue of electronic heat dissipation has received much attention in recent times and has become one of the key factors in electronic components such as circuit boards. Therefore, designing of materials with good thermal conductivity is vital. In this work, a thermally conductive SBP/PU composite was prepared wherein the spherical h-BN@PMMA (SBP) composite powders were dispersed in the polyurethane (PU) matrix. The thermal conductivity of SBP was found to be significantly higher than that of the pure h-BN/PU composite at the same h-BN filler loading. The SBP/PU composite can reach a high thermal conductivity of 7.3 Wm−1 K−1 which is twice as high as that of pure h-BN/PU composite without surface treatment in the same condition. This enhancement in the property can be attributed to the uniform dispersion of SBP in the PU polymer matrix that leads to a three-dimensional continuous heat conduction thereby improving the heat diffusion of the entire composite. Hence, we provide a valuable method for preparing a 3-dimensional heat flow path in polyurethane composite, leading to a high thermal conductivity with a small amount of filler.

Download Full-text

Unprecedentedly high thermal conductivity of carbon/epoxy composites derived from parameter optimization studies

Composites Science and Technology ◽

10.1016/j.compscitech.2019.107915 ◽

2020 ◽

Vol 186 ◽

pp. 107915 ◽

Cited By ~ 2

Author(s):

Yong Sik Yeom ◽

Kie Yong Cho ◽

Heun Young Seo ◽

Jong Suk Lee ◽

Do Hyun Im ◽

...

Keyword(s):

Thermal Conductivity ◽

Parameter Optimization ◽

High Thermal Conductivity ◽

Epoxy Composites

Download Full-text

Silver Nanoparticle-Deposited Aluminum Oxide Nanoparticle as Fillers for Epoxy Composites with High Thermal Conductivity

Advanced Composites Letters ◽

10.1177/096369351802700601 ◽

2018 ◽

Vol 27 (6) ◽

pp. 096369351802700

Author(s):

Tao Huang ◽

Yimin Yao ◽

Gang Zhang ◽

Fanling Meng

Keyword(s):

Thermal Conductivity ◽

Aluminum Nitride ◽

Silver Nanoparticle ◽

Ag Nanoparticles ◽

Thermal Contact Resistance ◽

Epoxy Composite ◽

Thermal Contact ◽

High Thermal Conductivity ◽

Epoxy Composites ◽

Oxide Nanoparticle

With the development of polymer-filled composites, the demand of high thermal conductivity materials is much attractive than ever. However, the process of a common method to improve thermal conductivity of composites is considerably complicated. The aim of this study is to investigate thermal conductivity of epoxy filled silver nanoparticle deposited aluminum nitride nanoparticles with relatively convenient process. We found that the thermal conductivities of composites filled with AlN/Ag nanoparticles are effectively enhanced, which is enormously increased from 0.48 Wm-1K-1(1.88 vol%) to 3.66 Wm-1K-1 (19.54 vol%). This can be ascribed to the bridging connections of silver nanoparticle among aluminum nitride nanoparticles. In addition, the thermal contact resistance of the epoxy composites filler with AlN/Ag nanoparticles is decreased, which is proved by the fitting measured thermal conductivity of epoxy composite with one physical model. We believe the finding has great potential for any microelectronic application.

Download Full-text