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

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)
Publication Information
Polymer(Korea) / v.29, no.2, 2005 , pp. 204-210 More about this Journal
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.
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Times Cited By Web Of Science : 14  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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