The Effect of Additives on Sound Absorption Coefficient of Polyurethane Foam

폴리우레탄폼의 흡음율에 대한 첨가제의 영향

  • Park, Nam-Cook (Department of Material Chemical Engineering, Chonnam Nat'l Univ.) ;
  • Kim, Young-Chul (Department of Material Chemical Engineering, Chonnam Nat'l Univ.) ;
  • Park, Chong-Rai (Department of Material Chemical Engineering, Chonnam Nat'l Univ.)
  • 박남국 (전남대학교 공과대학 물질화학공학과) ;
  • 김영철 (전남대학교 공과대학 물질화학공학과) ;
  • 박종래 (전남대학교 공과대학 물질화학공학과)
  • Received : 1996.10.10
  • Accepted : 1997.02.25
  • Published : 1997.04.10

Abstract

The effect of additives on the mechanical properties of polyurethane foam were investigated. The resin used in this study was prepared by adding catalyst, surfactant and cross-linker to both KONIX FA-703 polyether polyol(80%) and KONIX FA-733 polyether polyol(20%). The polyurethane was foamed by adding equivalent amount of isocyanate(TDI-80, prepolymer M-200, pure MDI) to the resin and was used in property measurements after 72 hours hardening. The physical properties of polyurethane foam were investigated in terms of density, tensile strength, tear strength, elongation, sound absorption coefficient and gel profile measurements. The effects of surfactant on the cell size was investigated by scanning electron microscopy(SEM). The sound absorption coefficient was directly related to the cell size. The physical properties were improved with increasing amount of surfactant(L-5309) until 1.0 part per hundred polyol(1.0pphp).

Keywords

Acknowledgement

Supported by : 전남대학교

References

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