한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제22권2호
  • /
  • Pages.123-135
  • /
  • 2005
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  • 1225-9098(pISSN)
  • /
  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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인 함유 벤조산 변성폴리에스테르의 합성과 이를 이용한 PU 난연도료의 도막물성 연구

Synthesis of Benzoic Acid Modified Polyester Containing Phosphorus and Their Application to PU Flame-Retardant Coatings

  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 심일우 (명지대학교 공과대학 화학공학과) ;
  • 조혜진 (명지대학교 공과대학 화학공학과) ;
  • 유혁재 (명지대학교 공과대학 화학공학과) ;
  • 김명수 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과)
  • 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) ;
  • You, Hyuk-Jae (Department of Chemical Engineering, Myongji University) ;
  • Kim, Myung-Soo (Department of Chemical Engineering, Myongji University) ;
  • Hahm, Hyun-Sik (Department of Chemical Engineering, Myongji University)
  • 발행 : 2005.06.30
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초록

Reaction intermediates PCP/BZA (PBI) and tetramethylene bis(orthophosphate)(TBOP) were synthesized from polycaprolactone (PCP) and benzoic acid (BZA) and from pyrophosphoric acid and 1,4-butanediol, respectively. Benzoic acid modified polyesters containing phosphorus (APTB-S, -10, -15) were synthesized by polycondensation of the prepared PBI (containing 5, 10, 15wt% of benzoic acid), TBOP, adipic acid, and 1,4-butanediol. Network structured PU flame-retardant coatings (APHD) were prepared by curing the synthesized benzoic acid modified polyesters containing phosphorus (APT B - 5 , -10, -15) with hexamethylene diisocyanate (HDI)-timer. From the TGA analysis of APTBs, it was found that the afterglow decreased with the amount of BZA content at the high temperatures. With the introduction of BZA, the film viscosity and film hardness of APHD decreased. With the introduction of caprolactone group, the flexibility, impact resistance, accelerated weathering resistance of APTBs increased. Flame retardancy of the coatings was tested. In a vertical burning method, APHD shows 210$^{\sim}$313 seconds, which indicates that the coatings are good flame-retardant coatings. Moreover, the amount of afterglow and flame retardancy of the coatings are decreased with increasing BZA content.

키워드

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