Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of Coupling Agent and Fiber Loading on Mechanical Behavior of Chopped Jute Fiber Reinforced Polypropylene Composites

황마 단섬유 강화 폴리프로필렌 복합재료의 기계적 거동에 미치는 결합제 및 섬유 Loading의 영향

  • Rasel, S.M. (Department of Mechanical Engineering, Changwon National University) ;
  • Nam, G.B. (Department of Mechanical Engineering, Changwon National University) ;
  • Byeon, J.M. (Department of Mechanical Engineering, Changwon National University) ;
  • Kim, B.S. (Composite Materials Group, Korea Institute of Materials Science (KIMS)) ;
  • Song, J.I. (Department of Mechanical Engineering, Changwon National University)
  • Received : 2011.07.21
  • Accepted : 2011.08.11
  • Published : 2011.09.30
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Abstract

In this study, Jute fibers reinforced polypropylene (JFRP) composites were manufactured by injection molding technique. In order to improve the affinity and adhesion between fibers and thermoplastic matrices during manufacturing, Maleic anhydride (MA) as a coupling agent have been employed. Untreated and treated surfaces of jute fibers were characterized using SEM and Fourier transform infrared (FTIR). Physical properties like water absorption rate were studied. Tensile and flexural tests were carried out to evaluate the composite mechanical properties. Tensile test and bending test indicated that JFRP composites show higher strength and modulus than pure PP. In addition, strength and modulus were found to be influenced by the variation of MAPP content (1%, 2%, and 3%). Tensile fracture surfaces were examined using scanning electron microscope. It ensures better interfacial adhesion between fibers and matrix by increasing the percentage of MAPP.

본 연구에서는 황마/폴리프로필렌 강화 섬유 복합재료를 사출성형 방법으로 제조하였으며, 섬유와 열가소성 기지재의 친화력과 접착력을 향상시키기 위해 말레산 무수물(Maleic anhydride, MA)을 결합제로 사용하였다. 천연 섬유인 황마의 표면처리 관찰을 위해서 주사전자현미경(SEM)과 적외선분광기(FTIR)를 사용하였고, 인장 및 굽힘 특성을 확인하기 위하여 기계적 특성 시험을 수행하였으며, 수분흡수율도 측정하여 비교하였다. 인장 및 굽힘 시험 결과 황마 복합재료(JFRP)는 기지재로 사용된 폴리프로필렌(PP)보다 높은 강도와 탄성계수를 나타내었고, 황마 복합재료의 강도 및 탄성계수는 결합제의 비율을 1~3%까지 증가시킴에 따라 높은 결과를 보였다. 이는 결합제의 비율을 증가시킬수록 섬유와 기지재 사이의 계면접착력을 향상시킬 수 있음을 의미한다.

Keywords

References

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