Characterization of thermoelectric properties of multifunctional multiscale composites and fiber-reinforced composites for thermal energy harvesting

被引：42

作者：

Sung, Dae Han ^{[1
]}

Kang, Gu-Hyeok ^{[1
]}

Kong, Kyungil ^{[1
]}

Kim, Myungsoo ^{[2
]}

Park, Hyung Wook ^{[1
]}

Park, Young-Bin ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Dept Mech Engn, UNIST Gil 50, Ulsan 44919, South Korea

[2] Youngsan Univ, Dept Mech Design Engn, 288 Junam Ro, Yangsan 50510, Gyeongnam, South Korea

来源：

COMPOSITES PART B-ENGINEERING | 2016年 / 92卷

基金：

新加坡国家研究基金会;

关键词：

Nano-structures; Polymer-matrix composites (PMCs); Thermal properties; Thermal analysis; POLYMER NANOCOMPOSITES; BEHAVIOR;

D O I：

10.1016/j.compositesb.2016.02.050

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have fabricated two types of multifunctional composites, carbon nanotube (CNT)/glass fiber (GF)/epoxy composites and carbon fiber (CF)/epoxy composites, and evaluated thermoelectric properties of the composites for applications as nip type thermoelectric materials as well as load carrying structural composites. Several test samples of CNT/GF/epoxy composites with various CNT concentrations were fabricated using a three-roll mill and hand-layup process on a hot plate, while CF/epoxy composite samples were manufactured using a hand-layup process. Experimental results demonstrated that the electrical resistivity of the CNT/GF/epoxy composite (multiscale composite) samples decreased as the CNT concentration increased. In-plane samples showed higher electrical and thermal conductivities due to partial alignment of CNTs in the multiscale composites and continuity of carbon fibers in CF/epoxy composites. Generally, CF/epoxy composites had better electrical and thermal conductivities than those of multiscale composites. In the Seebeck coefficient test, the multiscale composites showed n-type thermoelectric behavior, whereas the CF/epoxy composites showed p-type behavior. When temperature gradients were applied to closed circuits comprised of multiscale composites and CF/epoxy composites as n-type and p-type materials, respectively, an electric current was successfully generated. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：202 / 209

页数：8

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