Aromatic polyimides are one of the most important class of high-performance polymers used in the microelectronics and optoelectronics industries due to their excellent thermal, mechanical and electrical properties as well as outstanding chemical resistance. Despite the excellent combined properties,...
Aromatic polyimides are one of the most important class of high-performance polymers used in the microelectronics and optoelectronics industries due to their excellent thermal, mechanical and electrical properties as well as outstanding chemical resistance. Despite the excellent combined properties, their widespread applications for display are often limited because of their poor optical property. We synthesized aliphatic and fluorinated aromatic polyimides to reduce charge transfer complex which is one of the main reason for poor optical property Colorless polyimides were synthesized from dianhydrides such as 1,4-(2,5-Dioxotetrahydrofuran-3-yl)-1,2,3,4- tetrahydrona-phthalene-1,2-dicarboxylic Anhydride (TDA), 4,4'-(Hexafluoroisopropylidene) iphthalic anhydride (6FDA) and diamines such as 4,4-Methylenebis (2-methylcyclohexyl)amine (PACM), 4,4-Methylenebis (2-methylcyclohexylamine) (2MMCDA), 1,4-diaminobutane (14DAB), 1,8-diaminooctane (18DAO), 4,4'-(Hexafluoroisoproptldiene)dianiline (6FpDA), 2,2-bis[4-(4-aminophenoxy) phenyl]hexafluoropropane (BAPF6P), 4,4'-(1-methylethylidene)bis-benzenamine (MDA). 4,4'-Oxydianiline (ODA), para-phenylene diamine (PPD). Average molecular weight of poly (amic acid)s is in the range of 8,000 ~ 100,000 uV. Thermogravimetric analyses (TGA) indicated that all polyimide films had good thermal stability and their thermal decomposition temperatures were above 400℃. FT-IR spectroscopy indicated that polyimde precursors are fully imidized below 250℃. Fluorinated polyimide films show good flexibility, general surface hardness (1H) and lower water (1.86 % / day) absorption than Kapton from DuPont (2.21 % / day). In addition, 6FpDA, BAPF6P, MDA type fluorinated polyimide films had high UV transmittance (> 73 % at visible area). A flexible display, which can be folded or rolled without damage, may become common in display fields. For better mechanical properties, the fluorinated polyimide films could be used for flexible display substrates.
Aromatic polyimides are one of the most important class of high-performance polymers used in the microelectronics and optoelectronics industries due to their excellent thermal, mechanical and electrical properties as well as outstanding chemical resistance. Despite the excellent combined properties, their widespread applications for display are often limited because of their poor optical property. We synthesized aliphatic and fluorinated aromatic polyimides to reduce charge transfer complex which is one of the main reason for poor optical property Colorless polyimides were synthesized from dianhydrides such as 1,4-(2,5-Dioxotetrahydrofuran-3-yl)-1,2,3,4- tetrahydrona-phthalene-1,2-dicarboxylic Anhydride (TDA), 4,4'-(Hexafluoroisopropylidene) iphthalic anhydride (6FDA) and diamines such as 4,4-Methylenebis (2-methylcyclohexyl)amine (PACM), 4,4-Methylenebis (2-methylcyclohexylamine) (2MMCDA), 1,4-diaminobutane (14DAB), 1,8-diaminooctane (18DAO), 4,4'-(Hexafluoroisoproptldiene)dianiline (6FpDA), 2,2-bis[4-(4-aminophenoxy) phenyl]hexafluoropropane (BAPF6P), 4,4'-(1-methylethylidene)bis-benzenamine (MDA). 4,4'-Oxydianiline (ODA), para-phenylene diamine (PPD). Average molecular weight of poly (amic acid)s is in the range of 8,000 ~ 100,000 uV. Thermogravimetric analyses (TGA) indicated that all polyimide films had good thermal stability and their thermal decomposition temperatures were above 400℃. FT-IR spectroscopy indicated that polyimde precursors are fully imidized below 250℃. Fluorinated polyimide films show good flexibility, general surface hardness (1H) and lower water (1.86 % / day) absorption than Kapton from DuPont (2.21 % / day). In addition, 6FpDA, BAPF6P, MDA type fluorinated polyimide films had high UV transmittance (> 73 % at visible area). A flexible display, which can be folded or rolled without damage, may become common in display fields. For better mechanical properties, the fluorinated polyimide films could be used for flexible display substrates.
주제어
#fluorinated optical 유연 디스플레이 폴리이미드 필름
※ AI-Helper는 부적절한 답변을 할 수 있습니다.