화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.24, No.2, 149-158, March, 2000
Export Citation
고흡유성 발포 폴리우레탄의 합성과 특성
Synthesis and Characteristics of Highly Oil-adsorptive Expanded Polyurethane
이용훈, 김욱1, 김원호†
  • 부산대학교 공과대학 화학공학과
  • 1동아화학(주) 연구팀
Yong-Hun Lee, Wook Kim1, and Wonho Kim†
  • Department of Chemical Engineering, Pusan National University, Pusan 609-735, Korea
  • 1Research Team, DongAh Chem. Co. Ltd., Kyungnam 626-120, Korea
E-mail:
초록
흡유성이 우수한 발포 폴리우레탄(EPU)을 제조하기 위하여 soft segment로는 친유성 polyo인 polyprolyleneglycol(PPG)를 사용하고 hard segment로는 toluenediisocyanate(TDI)와 H2O를 사용하였다. Soft segment함량이 흡유성과 발포체의 기계적 특성에 미치는 영향을 조사하기 위하여 PPG평균 분자량 (Mn 1000, 2000, 3000)에 따라 one-shot법으로 EPU를 제조한 결과 PPG 평균분자량이 3000에서 1000으로 감소할수록 흡유량과 인장강도는 각각 1460%에서 3010%, 0.26kgf/cm로 동시에 증가하였다. Hard segment 함량비인 (isocyanate index, γ=[NCO]/[OH]) γ이 1.0에서 1.2로 증가할수록 allophanate와 biuret 결합 형성에 기인하여 EPU의 인장강도가 0.56kgf/cm에서 0.95kgf/cm로 증가하였으나, surfactant(S-A)의 함량은 1.0pbw에서 2.5pbw로 증가할수록 closed cell 구조의 형성으로 인하여 흡유량이 3634%에서 3312%로 감소됨을 알 수 있었다.
Oil-absorptive expanded polyurethane(EPU) was prepared with a lypophilic polyol, polypropyleneglycol(PPG) as the soft segment, and toluenediisocyanate(TDI)and H2O as the hard segment. PPGs having various average molecular weights(Mn: 1000, 2000, 3000) were employed to investigate that the soft segment content was consequent on the oil-absroptivity and the mechanical properties of the EPUs. As Mn of PPG was decreased from 3000 to 1000, the oil-absroptivity and the tensile strength of the EPUs increased from 1460 to 3010% and from 0.26 to 0.55kgf/cm2 respectivity. As the hard segment content ratio, γ([NCO]/[OH])was increased from 1.0 to 1.2, the tensile strength of the EPUs increased from 0.56 to 0.95 kgf/cm2, dut to the formation of allophanate and/or biuret bondings. However, as the surfactant(S-A) content was increased frem 1.0 to 2.5 pbw, the oil-absorptivity was decreased from 3634 to 3312% due to the formation of closed cell structures.
Keywords:oil absrotion;expanded polyurethane;cell structure;polyol;isocyanate
  1. Sim JH, "Ocean Pollution and Ecosystem," p. 183, Minum Publishers, Seoul, 1991 (1991)
  2. Nam SH, M.D. Thesis, Hanyang Univ., 1986 (1986)
  3. Park SH, M.D. Thesis, Keimyung Univ., 1986 (1986)
  4. "Survey Handbook for Oil Pollution," Overseas Marine & Cargo Inspection Co., Pusan, 1996 (1996)
  5. Oertel G, "Polyurethane Handbook," 2nd Ed., Hanser Publishers, New York, 1993 (1993)
  6. Kim HJ, "Polyurethane Resin," p. 77, Daekoang Publishers, Seoul, 1979 (1979)
  7. "Polyurethane Foam," p. 30, Korea Polyol, Co., Ulsan, 1996 (1996)
  8. Clark NO, Blackman M, Trans. Faraday Soc., 44, 1 (1948) 
  9. Chai JB, Kim BK, Shin YJ, J. Korean Ind. Eng. Chem., 9(5), 648 (1998)
  10. Frisch KC, Saunders JH, "Plastic Foams," Part 2, p. 831, Marcell Dekker, New York, 1972 (1972)
  11. Eisenklam P, "Porous Masses," Vol. 2, p. 28, Butterworth London, 1956 (1956)
  12. Nakamae K, Nishino T, Asaoka S, Sudaryanto, J. Adhes. Adhes., 16, 233 (1996)
  13. Oertel G, "Polyurethane Handbook," 2nd Ed., p. 12, Hanser Publishers, New York, 1993 (1993)
  14. Woods G, "Flexible Polyurethane Foams," p. 3, Applied Science Publishers, New York, 1982 (1982)
  15. Lee HS, Seo BS, Jin MJ, Proceeding of The 3rd Asian Textile Conference, 1, 363 (1995)
  16. Spirkov M, Kubin M, J. Macromol. Sci.-Chem., A(24), 1167 (1987)
  17. Clarson S, "Siloxane Polymers," p. 338, Prentice Hall, New Jersey, 1993 (1993)
  18. Hepburn C, "Polyurethane Elastomers," p. 120, Applied Science Publishers, N.Y., 1982 (1982)