Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
권호 표지

Accelerated the environmental stress cracking (ESC) study of polymer materials using a plastic ruler and a PVC eraser

플라스틱 자와 지우개를 이용한 고분자재료의 환경응력파괴(ESC) 가속실험 방법에 관한 연구

  • 박준형 (한국화학융합시험연구원 신뢰성본부) ;
  • 안원배 (세종과학고등학교) ;
  • 유진성 (세종과학고등학교) ;
  • 김경문 (한국화학융합시험연구원 신뢰성본부) ;
  • 남경현 (경기대학교 응용정보통계학과)
  • Received : 2013.05.15
  • Accepted : 2013.06.08
  • Published : 2013.06.25
Download PDF
⟨ Previous Next ⟩

Abstract

The study of environmental stress cracking (ESC) by contact with plastic rulers and PVC erasers which was artificially added to the external stress was carried out in order to accelerate the chemicals crack. To analyze a blooming plasticizer that migrates from the inside of blended eraser to the surface of the eraser, the ESC experiments were carried out at room temperature and $50^{\circ}C$ conditions. The chemicals crack shape caused by the plasticizer and the brittle fracture shape resulted from the external stress were observed in consequence with the cross-sectional surface analysis of the ruler crack by the ESC. The bending strength of the plastic rulers were fractured prior to the yield point and it had low bending flexure stress. We presented that ESC of polymer materials was affected by the polarity of the chemicals and polymer, the exposure time to chemicals, the exposure temperature and the level of strain on the polymer.

Keywords

References

  1. S. Jones(2000), Compositional and failure analysis of polymers: A practical approach, John Wiley and Sons, pp.452-478
  2. J. A. Jasen(2004), Environmental stress cracking-the plastic killer, Advanced Materials and Processes, pp.50-53
  3. R. P. Kambour(1968), Stress-strain behavior of the craze, Polymer Engineering and Science, Vol. 8, pp.281-289 https://doi.org/10.1002/pen.760080408
  4. E. J. Kramer(1983), Microscopic and molecular fundamentals of crazing, Advances in Polymer Science, Vol. 52, pp.1-56
  5. 大武義人(2005), 고무․플라스틱 재료의 트러블과 대책, 일본 일간공업신문사, pp.95-105
  6. R. A. Schapery(1975), A theory of crack initiation and growth in viscoelastic media Ⅰ. theoretical development, Intl. J. of Fracture, Vol. 11, No. 1, pp.141-159 https://doi.org/10.1007/BF00034721
  7. A. N. Gent(1970), Hypothetical mechanism of crazing in glassy plastics, J. Mater. Sci., Vol. 5, pp.925-932 https://doi.org/10.1007/BF00558171
  8. J. M. Lagaron, N. M. Dixon and W. Reed(1999), Morphological characterization of the crystalline structure of cold-drawn HDPE used as a model for environmental stress cracking (ESC) phenomenon, Polymer, Vol. 40, pp.2569-2586 https://doi.org/10.1016/S0032-3861(98)00500-X
  9. 김엄기(1994), 고분자 재료에서의 파괴역학, 대한기계학회지, 제34권 5호, pp.384-391,
  10. M. L. Williams, R. F. Landel and ]. D. Ferry(1955), The temperature dependence of relaxation mechanisms in amorphous polymers and other glass-forming liquids, ]. of the American Chemical Society, Vol. 77, pp.3701-3707 https://doi.org/10.1021/ja01619a008
  11. E. J. Kramer and E. W. Hart(1984), Theory of slow, steady state crack growth in polymer glasses, Polymer, Vol. 25, pp.1667-1678 https://doi.org/10.1016/0032-3861(84)90164-2
  12. 김주권, 박성진, 윤경환(2002), 냉장고 ABS Inner Case 진공성형품의 환경응력파괴, 유변학의 이론과 응용, 제6권 1호, pp.77-80
  13. J. A. Jasen(2005), Environmental stress cracking-examples from the automotive industry, ANTEC 2005 Plastics: Annual Technical Conference Vol. 2, pp.1-6, Society of Plastics Engineers
  14. J. M. Lagaron, J. M. Pastor and B. J. Kip(1999), Role of an active environment of use in an environmental stress crack resistance (ESCR) test in stretched polyethylene: A vibrational spectroscopy and a SEM study, Polymer, Vol. 40, pp.1629-1636 https://doi.org/10.1016/S0032-3861(98)00406-6