화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.26, No.2, 193-199, March, 2002
Export Citation
두 종류의 이소시아네이트와 디클로로-폴리에스테르 폴리올로부터 중합한 PU 난연도료의 도막물성 및 난연성
Physical Properties and Flame Retardancy of PU Coatings Polymerized with Two Different Types of Isocyanates and Dichloro-Polyester Polyol
양인모, 김성래, 박형진, 함현식, 우종표, 박홍수†
  • 명지대학교 공과대학 화학공학과
In-Mo Yang, Sung-Rae Kim, Hyong-Jin Park, Hyun-Sik Hahm, Jong-Pyo Wu, and Hong-Soo Park†
  • Department of Chemical Engineering, Myongji University, Yongin 449-728, Korea
E-mail:
초록
전보에서 합성한 디클로로-폴리에스테르 폴리올(DCBAO)에 2종류의 이소시아네이트 경화제인 Desmodur N-3300과 Desmodur L-75를 선택하여 상온경화시켜 PU계 난연도료 (DCBAO/N- 3300=DCBAN 및 DCBAO/L-75=DCBAL)를 각각 제조하였다. 제조된 DCBAN과 DCBAL 도료로서 도막물성을 측정한 결과, 양쪽 모두의 도료가 난연처리 후에도 물성저하 현상을 초래하지 않았으며, 별도의 황변성 시험에서 황변성은 DCBAL 쪽이 다소 불량하게 나타나 Desmodur L-75가 황변성과 관련이 있음을 알았다. 또한 난연성분인 2,4-dichlorobenzoic acid의 함량 20∼30 wt%에서 LOI 값 25∼26% 선의 난연효과를 보여주었다.
The dichloro-polyester polyol (DCBAO) which was synthesized in our earlier work was cured at room temperature with two different type of curing agents including Desmodur N-3300 and Desmodur L-75 to get a polyurethane flame-retardant coatings (DCBAO/N-3300=DCBAN and DCBAO/L-75=DCBAL). We could not observe any deterioration of physical properties of the flame-retardant PU coatings (DCBAN and DCBAL) in comparison with the conventional PU coatings. Thermal resistance of DCBAL-type flame-retardant coatings, which was measured by yellowness index difference, was inferior to that of DCBAL-type PU coatings. We believe that this phenomena is attributed to the poor thermal resistance of Desmodur L-75 isocyanate. It was observed that the LOI values were 25∼26% for the PU coatings containing 20∼30 wt% of 2,4-dichlorobenzoic acid.
Keywords:dichloro-polyester polyol;isocyanate;PU flame-retardant coatings;LOI
  1. Brock T, Groteklaes M, Mischke P, "European Coatings Handbook", Vincentz Verlag, Hannover, 80 (2000)
  2. Oertel G, "Polyurethane Handbook", 2nd Ed., Hanser Pub. Co., New York, 55 (1993)
  3. Wicks ZW, Jones FN, Pappas SP, "Organic Coatings:Science and Technology", 2nd Ed., Wiley, New York, 180 (1999)
  4. Anderson DG, Vanderberg JT, Anal. Chem., 57, 15 (1985) 
  5. Teijin K, Jpn . Patent 158,273 (1985)
  6. Dainippon Ink & Chem. KK., Jpn. Patent 98,158 (1993)
  7. Park HS, Hahm HS, Park EK, J. Appl. Polym. Sci., 61(3), 421 (1996) 
  8. Park HS, Keun JJ, Lee KS, J. Polym. Sci. A: Polym. Chem., 34(8), 1455 (1996) 
  9. Park HS, Wu JP, Kim HK, J. Ind. Eng. Chem., 3(4), 282 (1997)
  10. Kim SJ, Park HS, Lee KC, Kim SK, Park EK, J. Ind. Eng. Chem., 3(1), 63 (1997)
  11. Park HS, Ha KJ, Keun JH, Kim TO, J. Appl. Polym. Sci., 70(5), 913 (1998) 
  12. Park Hs, Wu JP, Park CH, Kim SK, J. Coat. Technol., 69, 41 (1997)
  13. Dowbenko R, Friedlander C, Gruber G, Prucnal P, Wismer M, Prog. Org. Cocatings., 11, 71 (1983) 
  14. Calbo LJ, "Handbook of Coatings Additives", Marcel Dekker, Inc., New York, 1, 511 (1992)
  15. Zisman WA, J. Paint Technol., 44, 42 (1972)
  16. Oldring PKT, Hayward G, "Resins for Surface Coatings", Selective Industrial Training Associates, London, III, 25 (1987)
  17. Nakamichi T, Ishidoya M, J. Coat. Technol., 60, 33 (1988)
  18. Lanson HJ, "Encyclopedia of Polymer Science and Engineering", 2nd Ed., ed by Koroschwitz JI, Wiley, New York, 1, 656 (1985)
  19. Dietliker KK, "Chemistry & Technology of UV & EB Formulation for Coatings, Ink & Paints", Selective Industrial Training Associates, London, 3, 93 (1991)
  20. Kim SJ, Polym. Sci. Technol., 6(2), 118 (1995)
  21. Brock T, Groteklaes, Mischke P, "European Coatings Handbook", Vincentz Verlag, Hannover, 66 (2000)