Article
  • Novel Preparation of Epoxy/Silica Nanocomposite Using Si-N Precursor
  • Kim LJ, Yoon HG, Lee SS, Kim Jk
  • Si-N 전구체를 이용한 에폭시/실리카 나노복합재료의 제조
  • 김이주, 윤호규, 이상수, 김준경
Abstract
In order to overcome drawbacks in the conventional preparation of epoxy/silica nanocomposites, such as formation of micro voids and dimensional instability caused by evolution of volatile by-products during curing reaction, a novel preparation method using Si-N precursor has been proposed. When prepared through insitureaction of epoxy curing reaction with sol-gel reaction of Si-N precursor, methyltripiperidinylsilane (MTPS) which does not produce by-products during reaction, epoxy/silica nanocomposites of extremely even dispersion of inorganic phase could be successfully prepared, resulting in high enhancement of mechanical and thermal properties as well as outstanding transparency.

기존의 에폭시/실리카 나노복합재료의 제조 방법에서 나타나는 문제점인 경화 반응 중의 휘발성 부산물 생성에 의한 미세기공 형성 및 치수 불안정성 등을 극복하고자 Si-N 전구체를 사용한 새로운 방법을 제안하고자 한다. 실리카 전구체로 부산물이 형성되지 않는 메틸트리페닐실란 (MTPS)을 합성하고 이를 이용하여 솔-젤 반응과 에폭시 경화 반응이 병행되는 동시 복합화 반응을 통하여 무기상의 고른 분산상태를 지닌 에폭시/실리카 나노복합재료를 제조하였으며, 이로부터 뛰어난 투명성뿐 아니라 기계적 물성과 열적 특성에서 탁월한 물성의 증가를 얻을 수 있었다.

Keywords: nanocomposite; Si-N precursor; epoxy; silica; in-situ reaction

References
  • 1. KRI Report No. 4: Organic-Inorganic Polymer Hybrids, Kansai Research Institute, Osaka, Japan (1997)
  •  
  • 2. Matejka L, Dukh O, Kolarik J, Polymer, 41(4), 1449 (2000)
  •  
  • 3. Haas KH, Wolter H, Curr. opin. Solid State Mat. Sci., 4, 571 (1999)
  •  
  • 4. Salahuddin N, Moet A, Hiltner A, Baer E, Eur. Polym. J., 38, 1477 (2002)
  •  
  • 5. Matejka L, Dusek K, Plestil J, Kriz J, Lednicky F, Polymer, 40, 171 (1998)
  •  
  • 6. Min BK, Polym.(Korea), 12(7), 599 (1988)
  •  
  • 7. Matejka L, Plestil J, Dusek K, J. Non-Cryst. Solids, 226, 114 (1998)
  •  
  • 8. Kang S, Hong SI, Choe CR, Park M, Rim S, Kim J, Polymer, 42(3), 879 (2001)
  •  
  • 9. Ratna D, Becker O, Krishnamurthy R, Simon GP, Varley RJ, Polymer, 44(24), 7449 (2003)
  •  
  • 10. Park DG, Polym. Sci. Technol., 8(3), 248 (1997)
  •  
  • 11. Ellsworth MW, Novak BM, J. Am. Chem. Soc., 113, 2756 (1991)
  •  
  • 12. Chujo Y, Ihara E, Kure S, Saegusa T, Macromolecules, 26, 5681 (1993)
  •  
  • 13. Philipp G, Schimdt H, J. Non-Cryst. Solids, 63, 283 (1984)
  •  
  • 14. Philipp G, Schimdt H, J. Non-Cryst. Solids, 82, 31 (1986)
  •  
  • 15. Ellsworth M, Novak B, Chem. Mater., 5, 839 (1983)
  •  
  • 16. Schottner G, Chem. Mater., 13, 3422 (2001)
  •  
  • 17. Brinker CJ, Scherer GWSol-Gel Science; The Physics and Chemistry of Sol-Gel Processing, Academic Press, New York (1990)
  •  
  • 18. Kim DOIn-situ Polymerization of Epoxy/Silica Nanocomposites by Si-N System and Sol-Gel Process of Si-N Structured Silazane, MS. Thesis, Kyung Hee Univ. (2001)
  •  
  • 19. Jeon YMEpoxy/silica Nanohybrid Preparation by Thiol Silane, MS. Thesis, Inha Univ. (2002)
  •  
  • 20. Kang STStudy for Epoxy Composites Modified by Structurally Controlled Organic/Inorganic Particles, Ph. D. Thesis, Seoul National Univ. (2000)
  •  
  • 21. Pouchert CJThe Aldrich Library of FT-NMR Spectra, 2nd Ed., Aldrich Co., WI (1983)
  •  
  • 22. Socrates GFT-IR Handbook, 2nd Ed., John Wiley & Sons, New York (1994)
  •  
  • 23. Pouchert CJThe Aldrich Library of FT-IR Spectra, 1st Ed., Aldrich Chemical Co., WI (1985)
  •  
  • 24. Liu YL, Hsu CY, Wei WL, Jeng RJ, Polymer, 44(18), 5159 (2003)
  •  
  • 25. Cousin P, Smith P, J. Polym. Sci. A: Polym. Chem., 32, 459 (1994)
  •  
  • 26. Salahuddin N, Moet A, Hiltner A, Baer E, Eur. Polym. J., 38, 1477 (2002)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2004; 28(5): 391-396

    Published online Sep 25, 2004

  • Received on Mar 16, 2004
  • Accepted on Sep 9, 2004