Composites Research

  • 제31권5호
  • /
  • Pages.209-214
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  • 2018
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  • 2288-2103(pISSN)
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  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
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Bio waste 소재로부터의 마이크로 필러 추출

Extraction of Micro Filler from Bio-waste Material

  • Nam, Gibeop (Engineering Research Center for Integrated Mechatronics and Components, Changwon National University) ;
  • Song, Jung-Il (Department of Mechanical Engineering, Changwon National University)
  • 투고 : 2018.08.26
  • 심사 : 2018.09.27
  • 발행 : 2018.10.31
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초록

본 연구에서는 친환경적이고 공급이 안정적인 소재를 찾기 위하여, Bio waste인 쌀겨와 조개 껍질에서 활용하여 마이크로 사이즈의 미세 입자를 추출하고, 추출한 입자의 크기와 형상을 분석한 후 CFRP에 첨가하여 물성의 변화를 관찰하였다. 쌀겨와 탄화 쌀겨의 주요구성성분은 탄소, 산소, 규소로 이루어졌으며 탄화과정을 거치면서 탄소와 규소의 비율이 증가함을 확인하였고, 조개 껍질 분말에서는 탄소 산소와 칼슘이 검출되었으며 이는 조개 껍질의 주요구성물질인 탄산칼슘의 영향으로 보인다. 쌀겨 분말의 면적평균은 $6.19{\mu}m$ 체적평균은 $14.77{\mu}m$으로 FE-SEM을 통하여 막대형상의 입자가 관찰되며 이는 쌀겨가 가지고 있던 껍질부분의 주름이나 표면의 털이 남아있는 형상으로 보인다. 탄화쌀겨의 분말은 면적평균은 $1.55{\mu}m$ 체적평균은 $8.20{\mu}m$ 조개 껍질 분말은 면적평균은 $2.53{\mu}m$ 체적평균은 $5.79{\mu}m$로 분석되었으며 쌀겨분말의 경우 막대(Rod)형상의 입자들이 관찰되었고, 조개 껍질 분말의 경우 판상(Plate)의 형상을 가지는 것으로 관찰되었다. CFRP에 첨가하였을 경우 첨가량에 비례하여 물성의 하락이 관찰되었는데 그 폭이 쌀겨분말의 경우가 가장 컸으며, 조개 껍질 분말의 경우 물성하락을 거의 유발하지 않음을 확인하였다.

This paper explain about the development of environmental friendly, low cost and stable supply material i.e., rice husk and shell were used as micro incorporating bio waste filler. Those were processed by ball mill and analyzed through micro observation by FE-SEM, EDS and particle size distribution. The obtained filler was mixed with epoxy resin for the manufacturing of CFRP composite and study tensile properties. In EDS analysis main contents of rice husk and rice husk ash are C, O and Si. When rice husk was burned C and Si ration were increased. Shell powder has C, O and Ca. It caused $CaCO_3$ from shell. Surface weighted mean of rice husk powder is $6.19{\mu}m$ and volume weighted mean is $14.77{\mu}m$. And it has rod type particles which caused hair and husk structure parts. Surface weighted mean of rice husk ash powder is $1.55{\mu}m$ and volume weighted means is $8.20{\mu}m$. Surface weighted mean of shell powder is $2.53{\mu}m$ and volume weighted mean is $5.79{\mu}m$. The tensile decreased with increasing the content of micro filler in CFRP composites. In case of rice husk, the significant decrement of tensile strength was observed. and in case of shell powder, there is no effect of changes take place in tensile strength.

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