The effects of thermal and mechanical properties of boron nitride filled pitch based carbon fiber reinforced polymer composites

Title
The effects of thermal and mechanical properties of boron nitride filled pitch based carbon fiber reinforced polymer composites
Authors
유남호유재상홍현기배곽진
Keywords
Boron nitride; Pitch based carbon fiber; Thermal conductivity
Issue Date
2019-12
Publisher
2019년 한국복합재료학회 추계학술대회
Abstract
The effects of thermal and mechanical properties of boron nitride filled pitch based carbon fiber reinforced polymer composites *K.J.Bae 1, H.K.Hong1 , N.H.Yu1, J.S.Yu1+ 1 Composite Materials Application Research Center, Korea Institute of Science and Technology +E-mail: jamesyu@kist.re.kr Keywords : Boron nitride, Pitch based carbon fiber, Thermal conductivity 1. Introduction Many studies have been conducted to replace metal structures in the aerospace [1]. However, the uni-directional (UD) carbon fiber reinforced polymer (CFRP) composites are typical anisotropic material. So through-plane thermal conductivity has become a critical challenge [2,3]. The purpose of this study is to improve the thermal conductivity and mechanical properties by boron nitride filled pitch based carbon fiber reinforced polymer composites. 2. Experiments The unidirectional pitch based carbon fiber prepreg (QH-116NSD, TB carbon Co. Ltd., Korea) and boron nitride (Denka, Korea) powder were used in this work. CFRP with BN powder composites were manufactured by hot-press process. Boron nitride was spread between all prepreg layers. The total amount of BN was 0, 1, 3, 5, 10, 15wt% relative to the resin of the prepreg. The CFRP with BN powder composites were evaluated through several experiments. The thermal conductivity of the composites was measured by laser flash analysis (Netzsch, LFA467) standard ASTM E1461. Mechanical properties were measured by tensile testing machine (Instron, 250kN) standard ASTM D3039. The images of the distribution of BN powder in CFRP composites were captured using an optical microscope (Keyence, VHX-900F). 3. Results and discussion Fig. 1 shows the thermal conductivity of the manufactured CFRP composites was measured using laser flash analysis method. The through-plane thermal conductivity was increased when the content was only 1wt% and thermal conductivity gradually decreased from 3wt% co
URI
http://pubs.kist.re.kr/handle/201004/70608
ISSN
-
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KIST Publication > Conference Paper
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