International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
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POLYPROPYLENE/CLAY NANOCOMPOSITES FOR AUTOMOTIVE APPLICATIONS

  • HONG C. H. (Hyperstructured Organic Materials Research Center and School of Chemical Engineering, Seoul National University) ;
  • LEE Y. B. (Hyperstructured Organic Materials Research Center and School of Chemical Engineering, Seoul National University) ;
  • JHO J. Y. (Hyperstructured Organic Materials Research Center and School of Chemical Engineering, Seoul National University) ;
  • NAM B. U. (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • HWANG T. W. (Polymeric Materials Research Team, Research & Development Division for Hyundai Motor Company & Kia Motor Company)
  • Published : 2005.12.01
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Abstract

Nanocomposites of polypropylene with organically modified clays were compounded on a twin-screw extruder by two-step melt compounding of three components, i.e., polypropylene, maleic anhydride grafted polypropylene (PP-g-MA), and organically modified clay. The effect of PP-g-MA compatibilizers, including PH-200, Epolene-43, Polybond-3002, Polybond-3200, with a wide range of maleic anhydride (MA) content and molecular weight was examined. Morphologies of nanocomposites and their mechanical properties such as stiffness, strength, and impact resistance were investigated. X-ray diffraction patterns showed that the dispersion morphology of clay particles seemed to be determined in the first compounding step and the further dispersion of clays didn't occur in the second compounding step. As the ratio of PP-g-MA to clay increased, the clay particles were dispersed more uniformly in the matrix resin. As the dispersibility of clays was enhanced, the reinforcement effect of the clays increased, however impact resistance decreased.

Keywords

References

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