Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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The Effect of Surface-Modification of Wood Powders by Plasma Treatment of Propylene on the Mechanical Properties of Wood Powder/PP Composites

프로필렌의 플라즈마 처리로 개질된 목분이 복합재료의 기계적 특성에 미치는 영향

  • Cho, Dong Lyun (School of Chemical Engineering, Chonnam National University) ;
  • Ha, Jong-Rok (Composite Materials Lab, Research Institute of Medium & Small Shipbuilding) ;
  • Kim, Byung Sun (Composites Research Division, Korea Institute of Materials Science) ;
  • Yi, Jin Woo (Composites Research Division, Korea Institute of Materials Science)
  • Received : 2017.01.06
  • Accepted : 2017.04.30
  • Published : 2017.04.30
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Abstract

Wood powders were surface-modified by plasma-treating propylene to make them compatible with PP matrix in WPC(wood powder composite). The plasma treatment of propylene resulted in the deposition of an ultrathin hydrophobic film which had the chemical structure similar to that of polypropylene. Wood powder and polypropylene were mixed to pellets by twin screw extruder and then 50 wt% wood powder/PP composites were produced by an injection machine. Tensile strength and flexural strength were improved by 7.59% and 12.43% at the maximum respectively. SEM (Scanning Electron Microscopy) observation on the fracture surface revealed that the treatment improved the interfacial bonding and the mechanical properties of the composites.

프로필렌의 플라즈마 처리로 목분을 표면 개질하여 복합재 기지인 PP와 상용성을 가지게 하였다. 프로필렌을 플라즈마로 처리하여 증착된 소수성 박막 필름의 화학적 구조는 PP와 흡사하였다. 목분과 PP는 이축 압출기에 의해 펠렛으로 만들어 졌고 50 wt% wood powder/PP 복합재료는 사출 성형기에 의해 성형되었다. 인장강도와 굴곡 강도는 최고 7.59% and 12.43%까지 향상되었으며 파단면에 대한 SEM 관찰로 플라즈마 중합이 계면 접착력과 기계적 특성을 향상시킨 것을 볼 수 있었다.

Keywords

References

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