Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
권호 표지

Synthesis and Property of Colorless Polyimide and Its Nanocomposite for Plastic Display Substrate

유연성 디스플레이 기판 소재용 투명성 폴리이미드의 합성 및 그의 나노복합화에 대한 연구

  • Ma Seung Lac (Polymeric Nanomaterials Lab, Korea Research Institute of Chemical Technology) ;
  • Kim Yong Seok (Polymeric Nanomaterials Lab, Korea Research Institute of Chemical Technology) ;
  • Lee Jae Heung (Polymeric Nanomaterials Lab, Korea Research Institute of Chemical Technology) ;
  • Kim Jung Su (Department of Polymer Science, Chungnam National University) ;
  • Kim Insun (i-Components Co., Ltd.) ;
  • Won Jong Chan (Polymeric Nanomaterials Lab, Korea Research Institute of Chemical Technology)
  • 마승락 (한국화학연구원 고분자나노소재 연구팀) ;
  • 김용석 (한국화학연구원 고분자나노소재 연구팀) ;
  • 이재흥 (한국화학연구원 고분자나노소재 연구팀) ;
  • 김정수 (충남대학교 고분자공학과) ;
  • 김인선 ((주)아이컴포넌트) ;
  • 원종찬 (한국화학연구원 고분자나노소재 연구팀)
  • Published : 2005.03.01
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Abstract

We describe a colorless, transparent polyimide films for plastic display substrate which should have heat resistance, roll-to-roll processability and low CTE (coefficient of thermal expansion) property. Colorless polyimides were synthesized from 3,3',4,4'-oxydiphthalic anhydride (ODPA) 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and diamines such as sulfonyldianiline, aminophenoxybenzene (TPE-p, TPE-q, TPE-r) and bis[4-(3-aminophen oxy)phenyl] sulfone (m-BAPS). Their optical properties were measured by UV spectrophotometer, colormeter and hazemeter. We prepared polyimide/organophilic layered silicate nanocomposite to improve dimension stability. These colorless polyimide films showed UV transmittance by the level upper $89\%$, at 440 nm and excellent optical property having the value under yellow index (YI)=7. In addition, polyimide nanocomposite films also showed an improvement of CTE value as decreased according to the amount of layered silicate contents.

플라스틱 디스플레이 기판용으로 사용하기 위하여 무색, 투명하면서 유연성, roll-to-roll 공정, 내열성과 저 열팽창계수 특성을 갖출 수 있는 폴리이미드에 대한 연구를 하였다. 3,3',4,4'-oxydiphthalic anhydride(ODPA), 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), sulfonyldianiline(3-SDA), aminophenoxybenzene(TPE-p, TPE-q, TPE-r)과 bis[4-(3-aminophenoxy)phenyl]sulfone(m-BAPS) 등을 사용하여 무색 투명한 폴리이미드를 합성하고 광학적 특성을 UV spectrophotometer, colormeter와 hazemeter를 이용하여 측정하였다. 열팽창계수(CTE)를 낮추기 위하여 층상실리케이트로 나노복합화하였다. 무색투명한 폴리이미드 필름은 440 nm에서 $89\%$ 이상의 광투과도와 yellow index(YI) 값이 7 이하의 우수한 광학 특성을 보였다. 나노복합화한 폴리이미드 필름은 층상실리케이트가 효과적으로 박리되어 층상실리케이트의 함유량이 증가함에 따라 열팽창계수가 감소하는 효과를 보였다.

Keywords

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