Special Issue
  • Influence of Stacking Sequence on Carbon Fiber/Aramid Fiber Hybrid Composite

  • Hyeonho Lee*,**, Seoyeon Bae*, Sungbi Lee*,***, Myoung-Gyu Lee***, Wonjin Na*,****†

  • * Composites Materials Applications Research Center, Korea Institute of Science and Technology (KIST),
    ** Division of Convergence Technology Engineering(Electronic Materials Engineering), Jeonbuk National University, Republic of Korea
    *** Department of Materials Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University
    **** Department of JBNU-KIST Industry-Academia Convergence Research, Jeonbuk National University

  • 탄소섬유/아라미드섬유 하이브리드 복합재료의 적층 순서의 영향 평가

  • 이현호*,**· 배서연*· 이성비*,***· 이명규***· 나원진*,****†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Carbon fiber-reinforced composites have excellent mechanical properties. However, the fracture toughness is a disadvantage due to brittle failure mode. The fracture toughness can be enhanced using hybridization with large-elongation fibers. In this study, polyamide (aramid) fibers are hybridized with carbon fiber with various stacking sequences. As a result, the Izod impact strength was enhanced by 63% with 25% aramid fiber hybridization. It is also shown that there is an optimal point in laminated composite hybridization, [CF/CAF2/CF]s stacking sequence


탄소섬유 복합재료는 우수한 물성을 바탕으로 산업 전반에 활용되고 있으나 취성이 강하다는 단점이 있다. 연신율이 높은 소재와의 하이브리드화를 통해 강도는 다소 감소되더라도 파괴인성을 향상시킬 수 있다. 이 연구에서는 탄소섬유와 아라미드섬유를 하이브리드한 적층 판재의 물성을 평가하되, 적층 순서를 다르게 하여 이종재료와의 계면 형성 정도를 조절하였다. 그 결과 25%의 아라미드 섬유 포함 시 순수 탄소섬유 대비 최대 63%의 Izod 충격강도의 향상을 확인할 수 있었으며, 중간 정도의 복잡도를 가진 적층순서 [CF/CAF2/CF]s에서 가장 우수하였다. 그러나 전체적인 복합화 효과는 부정적인 것으로 분석되었다


Keywords: 탄소섬유(Carbon fiber), 아라미드섬유(Aramid fiber), 섬유복합화(Fiber hybridization), 적층순서(Stacking sequence)

This Article

Correspondence to

  • Wonjin Na

  • * Composites Materials Applications Research Center, Korea Institute of Science and Technology (KIST),
    **** Department of JBNU-KIST Industry-Academia Convergence Research, Jeonbuk National University

  • E-mail: namossi@kist.re.kr