Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Effect of Isocyanate Curing Agents on the Physical Properties and Flame Retardancy of Flame-Retardant PU Coatings

이소시아네이트 경화제 종류에 따른 PU 난연도료의 도막물성 및 난연효과

  • Park, Hong-Soo (Department of Chemical Engineering Myongji University) ;
  • Shim, Il-Woo (Department of Chemical Engineering Myongji University) ;
  • Jo, Hye-Jin (Department of Chemical Engineering Myongji University) ;
  • Hahm, Hyun-Sik (Department of Chemical Engineering Myongji University) ;
  • Kim, Young-Geun (Korea Institute of Construction Materials)
  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 심일우 (명지대학교 공과대학 화학공학과) ;
  • 조혜진 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과) ;
  • 김영근 (한국건자재시험연구원)
  • Published : 2006.09.30
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Abstract

PU type flame-retardant coatings (TBAO/L-75, TBAOL ; TBAO/N-100, TBAON) were prepared by blending bromine-containing modified polyester (TBAO) which was synthesized in our earlier work. with two kinds of isocyanate curing agents, Desmodur L-75 and Desmodur N-100. Physical properties of the prepared flame-retardant coatings were tested. TBAOL shows better hardness than TBAON, while TBAON shows better viscosity, accelerated weathering resistance, yellowness index and lightness index difference than TBAOL. There were no remarkable differences in fineness of grind, $60^{\circ}$ specular gloss, cross-hatch adhesion, and abrasion resistance of TBAOL and TBAON. There was no discernable difference in flame-retardancy between the two flame-retardant coatings, TBAOL and TBAON. When the content of tribromo acetic acid, which is flame-retarding component, was 30wt% the LOI value was in a range of $29{\sim}30%$, which indicates that the two coatings are good flame-retardant coatings.

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References

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