Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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The Effect on Recycled resin Ratio of High Density Polyethylene on the Molded Parts

高密度 폴리에틸렌 材料의 再活用 混合比가 成形品에 미치는 影響

  • Kang, Tae-Ho (School of Mechanical Engineering, Pukyong National University) ;
  • Kim, In-Kwan (School of Mechanical Engineering, Pukyong National University) ;
  • Kim, Young-Soo (School of Mechanical Engineering, Pukyong National University)
  • Published : 2004.10.01
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Abstract

In this study, experimental work was performed to mold tensile specimens by using the injection molding machine. Melt temperature, mold temperature and the mixed ratio of recycled resin were selected as processing parameters for studying the effect of those conditions on the shrinkage, weight, absorption, and tensile strength of molded parts. As a result, the shrinkage was increased according to the higher mold and melt temperature and it was more sensitive to the change of mold temperature. On the other hand, the weight of molded parts was decreased due to the increment of mold and melt temperature. Tensile strength was increased with mold and melt temperature, and it was also easy to change by mold temperature.

플라스틱 중에서 열가소성 수지는 재활용이 가능하지만 재활용 수지에 대한 균일한 물성의 신뢰성이 부족하기 때문에 제한적으로 사용되고 잇다. 정확한 재활용의 정도에 따른 물성을 파악하여 사용 범위를 규정하는 것은 제한된 자원을 효율적으로 사용할 수 있는 중요한 방법이라 하겠다. 본 연구는 고밀도 폴리 에틸렌(HDPE)을 대상으로 재활용의 정도에 따른 물성의 변화를 실험적으로 수행하였다. 재활용을 하지 않은 수지와 재활용 수지를 중량비를 기준으로 혼합하여 실험을 수행하였으며 기계적인 물성의 변화를 측정하였다.

Keywords

References

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