Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Ultrasonic Treatment and Particle Size on Mechanical Properties of Waste Polypropylene/WGRT Composites

초음파 처리와 분말 크기가 재생 폴리프로필렌/폐타이어 분말 복합체의 기계적 특성에 미치는 영향

  • Kim, Donghak (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Kim, Seonggil (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Lee, Minji (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Park, Jong-Moon (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Oh, Myung-Hoon (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Kim, Bong-Suk (Thinker route Co., LTD.) ;
  • Kim, Jinkuk (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Bang, Daesuk (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
  • 김동학 (금오공과대학교 에너지융합소재공학부) ;
  • 김성길 (금오공과대학교 에너지융합소재공학부) ;
  • 이민지 (금오공과대학교 에너지융합소재공학부) ;
  • 박종문 (금오공과대학교 신소재공학부) ;
  • 오명훈 (금오공과대학교 신소재공학부) ;
  • 김봉석 ((주)씽크루트) ;
  • 김진국 (경상대학교 나노신소재융합공학과) ;
  • 방대석 (금오공과대학교 에너지융합소재공학부)
  • Received : 2015.01.29
  • Accepted : 2015.04.10
  • Published : 2015.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, various sizes of waste ground rubber tire (WGRT) were devulcanized by a single screw extruder equipped with a sonicator in front of the die, and waste PP and devulcanized waste ground rubber tire (DWGRT) composites were prepared by an intermeshing co-rotating twin screw extruder. The crosslink density and percent devulcanization of WGRT and DWGRT for 40, 80 and 140 meshes were calculated. The mechanical properties of the composites were compared with each other. The effect of SEBS-g-MA as a compatibilizer was investigated on mechanical properties of both waste PP/WGRT and waste PP/DWGRT composites. The crosslink density was decreased with decreasing the WGRT size. On the other hand, the percent devulcanization was increased by adding the smaller size of WGRT. Also, tensile strength, impact strength and elongation at break of the composite with DWGRT were higher than those with WGRT. Especially, mechanical properties of the composites were significantly increased by adding the smaller size of WGRT and DWGRT. Addition of SEBS-g-MA into both waste PP/(D)WGRT composites exhibited better impact strength and elongation at break than the composites themselves.

본 연구에서는 초음파 처리기가 die에 장착된 일축 스크류식 압출기를 이용하여 다양한 크기의 폐타이어 분말을 탈황시켰고, 치합형 이축 스크류식 압출기를 이용하여 재생 폴리프로필렌/탈황된 폐타이어 분말 복합체를 제조하였다. 40, 80, 140 mesh 크기의 탈황되지 않은 폐타이어 분말과 탈황된 폐타이어 분말의 가교밀도와 탈황도를 계산하였고 각각의 기계적 특성을 비교하였다. 또한, 재생 폴리프로필렌과 탈황 전과 탈황 후의 폐타이어 분말 복합체에 대한 상용화제 SEBS-g-MA의 효과를 조사하였다. 가교밀도는 폐타이어 분말의 크기가 작아질수록 감소하였다. 반면에 탈황도는 작은 크기의 폐타이어 분말이 첨가될수록 증가하였다. 탈황된 폐타이어 분말이 첨가된 복합체의 인장강도, 충격강도, 신장률은 탈황되지 않은 폐타이어 분말이 첨가된 복합체보다 크게 증가했으며 첨가된 폐타이어 분말의 크기가 작을수록 복합체의 기계적 특성이 더욱 향상되었다. 재생 폴리프로필렌과 탈황 전과 탈황 후의 폐타이어 분말 복합체에 SEBS-g-MA를 첨가하였을 때 충격강도와 신장률이 큰 폭으로 증가하는 것이 관찰되었다.

Keywords

References

  1. B. Adhikari, D. De and S. Mait., 2000 : Reclamation and recycling of waste rubber, Progress in Polymer Science, 25, pp909-948. https://doi.org/10.1016/S0079-6700(00)00020-4
  2. K. Oliphant and W. E. Baker., 1993 : The use of cryogenically ground rubber tires as a filler in polyolefin blends, Polymer Engineering and Science, 33(3), pp166-174. https://doi.org/10.1002/pen.760330307
  3. J. Lee., 2010 : Recycling of waste rubber, KIC News, 10(3), pp42-49.
  4. J. Y. An, J. M. Park, D. S. Bang, B. S. Kim and M. H. Oh., 2014 : Characterization of thermo-plastic vulcanized (TPV) composite prepared by the waste tire and plastic powder, J. of Korean Inst. of Resources Recycling 23(4), pp30-36 https://doi.org/10.7844/kirr.2014.23.4.30
  5. J. M. Park, J. Y. An, D. S. Bang, B. S. Kim and M. H. Oh., 2014 : Characteristics studies of waste tire rubber powders using the different grinding methods, J. of Korean Inst. of Resources Recycling 23(3), pp44-50 https://doi.org/10.7844/KIRR.2014.23.3.44
  6. H. S. Kye, K. C. Shin and D. S. Bang., 2006 : A study on the mechanical properties and rheological properties of the recycled polyethylene composites with ground waste tire powder, Elastomer, 41(2), pp97-107.
  7. Y. K. Hong., 2004 : Mechanical properties of plastic waste/ground rubber tire composite, Elastomer, 39(4), pp294-300.
  8. S. L. Zhang, Z. X. Zhang, Z. X. Xin, K. Pal and J. K. Kim., 2010 : Prediction of mechanical properties of polypropylene/waste ground rubber tire powder treated by bitumen composites via uniform design and artificial neural networks, Materials and Design, 31, pp1900-1905. https://doi.org/10.1016/j.matdes.2009.10.057
  9. F. A. Ghasemi, G. Payganeh, M. Rahmani and M. R. Kalaee., 2012 : Investigating the effects of waste ground rubber tire powder and PP-g-MA compatibilizer on the mechanical properties of PP/waste ground rubber tire (WGRT) powder/PP-g-MA composites, Nanomaterials and Biostructures, 7(4), pp1859-1868.
  10. S. Pichaiyut, C. Nakason, A. Kaesaman and S. Kiatkamjornwong., 2008 : Influences of blend compatibilizers on dynamic, mechanical, and morphological properties of dynamically cured maleated natural rubber and highdensity polyethylene blends, Polymer Testing, 27, pp566-580. https://doi.org/10.1016/j.polymertesting.2008.03.004
  11. R. Sonnier, E. Leroy, L. Clerc, A. Bergeret and J. M. Lopez-Cuesta., 2008 : Polyethylene/ground tyre rubber blends: Influence of particle morphology and oxidation on mechanical properties, Polymer Tesing, 26, pp274-281.
  12. C. K. Hong and A. I. Isayev., 2003 : An application of high-power ultrasound to rubber recycling, Elastomer, 38(2), pp103-121.
  13. M. H. Entezari, N. Ghows and M. Chamsaz., 2005 : Combination of ultrasound and dicarded tire rubber: Removal of Cr(III) from aqueous solution, J. Phys. Chem. A, 109, pp4638-4642.
  14. K. H. Park, D. H. Kim, J. K. Jung, S. G. Kim, D. S. Bang, M. H. Oh and B. S. Kim., 2014 : Effect of compatibilizers on the mechanical properties of waste polypropylene/waste ground rubber tire composites, J. of Korean Inst. Resources Recycling, 23(1), pp1-10.
  15. S. Rodsuk, S. Ritsuar and K. Wattanakul., 2012 : Characterization the effect of disulfide compound on the devulcanization of thermoplastic vulcanizate, AIP Conf. Proc., 1482, pp240-245.
  16. J. K. Kim, S. H. Hwang, J. H. Jung and S. Y. Pack., 2003 : A study on recycling technology of waste tire powder by particle size distribution analysis, Elastomer, 38(2), pp128-138.

Cited by

  1. Effects of Peroxides on the Properties of Reclaimed Polypropylene/Waste Ground Rubber Tire Composites Prepared by a Twin Screw Extrusion vol.51, pp.1, 2016, https://doi.org/10.7473/EC.2016.51.1.17