Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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A study on the Characteristic of Waste Ground Rubber Tire Powders with Pre-treatment Process for Recycling

전처리 공정에 따른 폐타이어 재생 고무분말의 특성연구

  • Park, Jongmoon (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • An, Ju-Young (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Park, Jin-Eui (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Bang, DaeSuk (Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Kim, Bong-Suk (Thinker route Co., LTD.) ;
  • Oh, Myung-Hoon (Department of Materials Science and Engineering, Kumoh National Institute of Technology)
  • 박종문 (금오공과대학교 신소재공학부) ;
  • 안주영 (금오공과대학교 신소재공학부) ;
  • 박진의 (금오공과대학교 신소재공학부) ;
  • 방대석 (금오공과대학교 에너지융합소재공학부) ;
  • 김봉석 ((주)씽크루트) ;
  • 오명훈 (금오공과대학교 신소재공학부)
  • Received : 2015.03.25
  • Accepted : 2015.04.09
  • Published : 2015.04.30
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Abstract

In this study, mechanical properties of waste ground rubber tire powder were investigated to evaluate the influence of pre-treatment process for recycling. The tensile test, fracture test and morphology observation were carried out using various kinds of waste ground tire powders, which were produced by grinding and devulcanization process, respectively. As a results, it was found that the produced rubber powder through grinding process increased its tensile strength and elongation with decreasing particle size because of decreasing surface area. Devulcanized rubber powder also increased its tensile strength and elongation by de-crosslink with sulfur. It could be also suggested that devulcanization treatment after grinding process was more efficient recycling process for both increasing tensile property and fracture elongation of waste ground rubber tire powders.

본 연구는 폐타이어 재활용을 위하여 수행된 전처리 공정이 재생 고무분말의 기계적 물성에 미치는 영향을 조사하는 것을 목적으로 하였다. 이를 위하여 분쇄 및 탈황공정을 통하여 생산된 폐타이어 고무분말을 재가황한 후 인장시험, 충격시험 및 파단면 관찰을 수행하였다. 분쇄 공정을 거쳐서 생산된 고무분말은 입자크기가 작아질수록 그 표면적이 증가되며 인장강도와 연신율이 모두 증가되었다. 반면에 탈황공정을 거친 고무분말은 내부에 존재하는 황과의 가교결합이 줄어들어서 이후의 가황처리 후에도 인장강도와 연신율이 모두 증가되었다. 따라서 폐타이어 재활용을 위한 전처리 공정은 재활용 분말을 일정크기로 분쇄한 후 탈황공정까지를 수행한 고무분말을 제조하는 것이 단순 분쇄공정만을 거친 재활용 고무분말에 비하여 가황 시에 연신율을 보다 효율적으로 증가시킬 수 있음을 확인하였다.

Keywords

References

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