화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.39, No.6, 902-908, November, 2015
DOI10.7317/pk.2015.39.6.902  Export Citation
불소계 변성이소시아네이트의 합성과 도막의 특성
Synthesis and Film Property of the Fluorine-containing Modified Polyurea
김성래1, 2, 박지용1, 이상구3, 이종대1, †
  • 1충북대학교 화학공학과
  • 2한국건설생활환경시험연구원
  • 3한국화학연구원
Sung Rae Kim1, 2, Ji Yong Park1, 3, Sang Goo Lee4, and Jong Dae Lee1, 3, †
  • 1Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
  • 2Korea Conformity Laboratories, 654-1, Yangcheong-ri, Ochang-eup, Cheongwon-gun, Chungbuk 363-883, Korea
  • 3, Korea
  • 4Division of Green Chemistry, Korea Research Institute of Chemical Technology, Yuseong, Deajeon 305-343, Korea
E-mail:
초록
도막의 특성 향상을 위해 PTPE-diol을 도입하여 불소계 변성 폴리우레아를 합성하였다. 합성된 PFDI는 PFPE-diol 함량에 따라 중평균 분자량은 2480에서 3170로 증가하는 경향성을 보였다. 1H NMR과 FTIR을 통한 화학구조 분석을 통해 PFDI 내에 C-F 결합을 확인하였고 PFPE-diol 함량의 감소함에 따라 C-F 결합피크의 세기도 감소하는 것을 알 수 있었다. 불소의 함량이 증가함에 따라 PFDI와 경화제를 혼합하여 제작된 도막의 경우 열안정성, 내후성, 내약품성, 내오염성 및 내마모성이 향상되는 결과를 얻었다. 반면, 도막의 부착강도, 경도, 음극박리, 인장강도, 신장률 및 인열강도는 상대적으로 저하되었다.
The fluorine-containing modified polyurea was synthesized using PTPE-diol in order to improve the film property. The weight-average molecular weight of the prepared PFDI was found to increase from 2480 to 3170 with increasing PFPE-diol content. The C-F bond of PFDI compounds was confirmed by the 1H NMR and FTIR, and the intensity of C-F bond decreased as PFPE-diol content decreased. As a result of increasing fluorine content, the film synthesized from PFDI and hardening agent showed that the characteristics of thermal stability, weather resistance, chemical resistance, stain resistance and abrasion resistance were increased. However, the performances of the adhesion strength of the coating film, the hardness, the cathode separation, the tensile strength, elongation and tear strength were relatively decreased.
Keywords:perfluoropolyether diol;perfluorine diisocyanate;polyfluorineurea;coating film
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