화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.48, No.5, 561-567, October, 2010
Export Citation
Colloidal Silica를 이용한 Silylated Waterborne Polyurethane/Silica Nanocomposite의 제조
Preparation of Silylated Waterborne Polyurethane/Silica Nanocomposites Using Colloidal Silica
홍민기, 신용탁, 최진주, 이원기1, 이경배1, 유병원1, 이명구2, 송기창†
  • 건양대학교 화공생명학과, 320-711 충남 논산시 내동 26
  • 1한진화학주식회사 기술연구소, 437-801 경기도 의왕시 고천동 333
  • 2나노스피어(주) 95-3 Jongsongri, Sonsanmyeon, Hwaseong, Gyeonggi, Korea, 경기도 화성시 송산면 중송리 95-3
Min Gi Hong, Yong Tak Shin, Jin Joo Choi, Won Ki Lee1, Gyoung Bae Lee1, Byung Won Yoo1, Myung Goo Lee2, and Ki Chang Song†
  • Department of Chemical and Biochemical Engineering, Konyang University, 26 Nae-dong, Nonsan, Chungnam 320-711, Korea
  • 1Technical Research Institute, Hanjin Chemical Co., LTD, 333 Gocheon-dong, Uiwang, Gyeonggi 437-801, Korea
  • 2Nanosphere Co., LTD, Korea
E-mail:
초록
Isophrone diisocyanate, poly(tetramethylene glycol)과 dimethylol propionic acid로부터 제조된, polyurethane 부분중 합체의 미반응 NCO기를 aminopropyl triethoxysilane으로 capping시켜 silylated waterborne polyurethane을 합성하였다. 연이어 이것을 colloidal silica와 혼합하여 silylated waterborne polyurethane/silica nanocomposite를 제조하였다. 동적 빛 산란법에 의해 측정된 nanocomposite 입자의 평균 크기는 silica 함유량과 무관하게 거의 일정한 수치를 나타내었다. 그러나 제조된 nanocomposite의 열적안정성은 순수한 waterborne polyurethane보다 우수하였다.
Silylated waterborne polyurethane was synthesized by capping the NCO groups of polyurethane prepolymer, prepared from isophrone diisocyanate, poly(tetramethylene glycol) and dimethylol propionic acid, with aminopropyl triethoxysilane. Subsequently, it was mixed with colloidal silica to prepare silylated waterborne polyurethane/silica nanocomposites. The average sizes of nanocomposite particles, measured by dynamic light scattering, showed almost the same value, irrespective of increasing silica content. However, the prepared nanocomposites showed better thermal stability than pure waterborne polyurethane.
Keywords:Silylated Waterborne Polyurethane;Aminopropyl Triethoxysilane;Colloidal Silica;Nanocomposite
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