The Toughness of Polyurethane and Epoxy Resins IPNs

폴리우레탄-에폭시 IPNs의 강인성

  • Kim, Jong Seok (School of Chemical Engineering and Technology, Chonbuk National University) ;
  • Hong, Suk Pyo (School of Chemical Engineering and Technology, Chonbuk National University)
  • 김종석 (전북대학교 화학공학부) ;
  • 홍석표 (전북대학교 화학공학부)
  • Received : 1998.03.13
  • Accepted : 1998.05.12
  • Published : 1998.06.10


Interpenetrating polymer networks(IPNs) were prepared from castor oil-type polyurethanes(PUs) and epoxy resin. Two types of PU were prepared by using polypropylene ether glycol(PPG) as a chain extending agent and caster oil(CO) as a crosslinking agent. COPU/epoxy simultaneous interpenetrating polymer networks(SINs) based on CO had a better compatibility over the all composition than PPGPU/epoxy SINs based on PPG. The flexural strength of all PPGPU/epoxy SINs was decreased with decreasing entanglement of networks. COPU/epoxy SINs showed the higher fracture toughness and mechanial properties than the PPGPU/epoxy SINs. Fracture surfaces of all of the SINs showed the localized shear deformation and crack deflection rather than generation of stress whitening associated with the cavitation.



  1. J. Appl. Polym. Sci v.65 L. Becu;A. Maazouz;H. Sautereau;J. F. Gerard
  2. Polym. Eng. Sci. v.36 H. R. Azimi;R. A. Pearson;R. W. Hertzberg
  3. Polym. Eng. Sci. v.36 D. S. Kim;K. Cho;J. K. Kim;C. E. Park
  4. Polym. Eng. Sci. v.35 Y. C. Chou;L. J. Lee
  5. J. Am. Oil Chem. Soc. v.51 F. C. Naughton
  6. Macromolecules v.12 N. Devia;J. A. Manson;L. H. Sperling
  7. J. Appl. Polym. Sci. v.29 Z. Petrovic;D. Fajnik
  8. Macromolecules v.9 S. C. Kim;D. Klempner;K. C Frisch;H. L. Frisch
  9. Poym. Mater. Sci. Eng. v.63 D. Li;X. Li;A. F. Yee
  10. J. Mater. Sci. letter v.11 Y. Huang;A. J. Kinloch
  11. J. Polym. Sci. Polym. Phys. Ed v.31 H. J. Sue;E. I. Garcia;N. A. Opchard
  12. Advances in Chemistry v.233 Toughnened Plastics I : science and engineering R. A. Pearson;C. K. Riew;A. J. Kinloch
  13. J. Appl. Polym. Sci. v.43 J. G. Homan;X. H. Yu;T. J. Connor;S. L. Cooper
  14. J. Appl. Polym. Sci v.39 T. Hur;J. A. Manson;R. W. Hertzberg;L. H. Sperling
  15. J. Polym. Res. v.3 H. H. Wang;J. C. Chen
  16. J. Polym. Sci. Polym. Phys. Ed. v.28 K. H. Hsieh;J. L. Han
  17. Polym. Mater. Sci. Eng. v.65 X. Han;Y. Wang;S. Pan;Q. Zheng
  18. J. Mater. Sci. v.15 S. Kunz-Douglass;P. W. Beaumant;M. F. Ashby
  19. Polym. Mater. Sci. Eng v.60 L. H. Sperling;C. E. Carraher
  20. Bull. Phys. Soc. v.1 T. G. Fox
  21. Polym. Eng. Sci. v.37 L. H. Fan;C. P. Hu;S. K. Ying