Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
권호 표지

Effect of Green Tea and Saw Dust Contents on Static Bending Strength Performance of Hybrid Boards Composed of Wood Fiber, Saw Dust and Green Tea

목재섬유, 톱밥 및 녹차 이종복합보드의 정적 휨 강도성능에 미치는 녹차 및 톱밥 배합비율의 영향

  • Park, Han-Min (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Lee, Soo-Kyeong (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Seok, Ji-Hoon (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Choi, Nam-Kyung (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Kwon, Chang-Bae (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Heo, Hwang-Sun (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Kim, Jong-Chul (Institute of Hadong Green Tea)
  • 박한민 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 이수경 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 석지훈 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 최남경 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 권창배 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 허황선 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 김종철 (하동녹차연구소)
  • Received : 2011.10.07
  • Accepted : 2011.12.20
  • Published : 2011.12.30
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Abstract

In this study, in addition to the green tea-wood fiber hybrid composite boards of previous researches, to make effective use of saw dust of domestic cypress tree with functionalities and application as interior materials, eco-friendly hybrid composite boards were manufactured from wood fiber, green tea and saw dust of cypress tree. We investigated the effect of the component ratio of saw dust and green tea on static bending strength performances. Static bending MOE (modulus of elasticity) was within 0.956~1.18GPa, and showed the highest value in wood fiber : green tea : saw dust = 50 : 40 : 10 of the component ratio, and had the lowest value in 50 : 30 : 20 of component ratio. These values were 2.0~3.1times lower than those of green tea-wood fiber hybrid composite boards reported in the previous researches. The bending MOR (modulus of rupture) showed 8.99~11.5MPa, the change of the bending MOR with component ratio of the factors was the same as that of bending MOE. These values had 1.9~3.5 times lower value than those of green tea-wood fiber hybrid composite boards, and showed the slightly lower values than the MOR of particle boards (PB) and medium density fiberboards (MDF) prescribed in Korean Industrial Standard. Therefore, it is considered that these hybrid composite boards need to improve strength performances by component ratio change, hybrid composite with other materials and adhesive change etc. in order to industrialize the hybrid composite boards.

이 연구에서는 선행연구의 녹차-목재섬유 복합보드에 부가하여, 목제품 생산 후 발생하는 부산물인 편백 톱밥의 효율적인 이용과 건축내장재로의 응용을 목표로 목재섬유와 편백톱밥 및 녹차분말을 혼합한 복합보드를 제조하여 정적 휨강도성능에 영향하는 톱밥 및 녹차의 배합비율의 영향을 조사하였다. 목재섬유-톱밥-녹차 복합보드의 휨 탄성계수는 0.956~1.18 GPa의 범위에 있었고, 목재섬유 : 톱밥 : 녹차의 배합비율 50 : 40 : 10에서 가장 높은 값을, 50 : 30 : 20에서 가장 낮은 값을 나타내었다. 이 값은 선행연구의 녹차-목재 섬유 복합보드보다 2.0~3.1배 낮은 값을 나타냈다. 목재섬유-톱밥-녹차 복합보드의 휨 강도는 8.99~11.5 MPa의 범위에 있었고, 구성요소의 배합비율에 따른 휨 강도의 변화는 휨 탄성계수와 같은 경향을 나타내었다. 이 값은 선행연구의 녹차-목재섬유 복합보드보다 1.9~3.5배의 낮은 값을 나타내었고, KS에 규정된 파티클보드 및 중밀도섬유판의 강도치보다 약간 낮은 값을 나타냈다. 따라서 이 복합보드를 산업화하기 위해서는 복합보드 구성요소의 배합비율의 조정, 이종재료와의 복합화 및 접착제의 전환 등으로 강도성능을 향상시킬 필요가 있을 것으로 사료된다.

Keywords

References

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