In this dissertation, transparent and colorless polyimide films were prepared through hybridization with inorganic materials such as graphene oxide, silica nano particle, and silver nanowire. In addition, organic-inorganic hybrid UV curable coating materials capable of UV curable were prepared to pr...
In this dissertation, transparent and colorless polyimide films were prepared through hybridization with inorganic materials such as graphene oxide, silica nano particle, and silver nanowire. In addition, organic-inorganic hybrid UV curable coating materials capable of UV curable were prepared to prevent fingerprints of touch panels.
In Chapters 1 and 2, the background and literature survey for polyimide, organic hybrids and UV curable coating materials are described.
In Chapter 3, a new imidazole containing diamine was synthesized to prepare photoconductive polyimides (PIs) with various dianhydrides based on the fact that the imidazole ring is a useful n-type block with high electron affinity and good thermal stability. All the PIs that were soluble in common polar organic solvents were transparent and exhibited high thermal stability.
In Chapter 4, effects of crosslinking agents on polyimide/graphene oxide hybrid films were investigated. For this work, the surface of graphene oxide (GO) was modified with amine groups using 4-aminobenzylamine (4-ABA) to improve compatibility. The mechanical, thermal and optical properties of the PIs were investigated. The composites prepared with rigid crosslinking agent exhibited better transparency due to reducing the influence of the charge transfer complex (CTC) by increasing the free volume between the polyimide
chains.
In Chapter 5, highly flexible, transparent, and conductive polyimide (PI) hybrid film with good thermal stability was fabricated by embedding reduced graphene oxide (rGO) coated silver nanowire (AgNW) into colorless poly(amic acid) using a spray coating method, followed by thermal imidization. The PI/AgNW/rGO conductive film exhibited good thermal stability, high optical transparency, and hydrophobic surface.
In Chapter 6, polyimide (PI)/silica hybrid films were prepared from tetraethyl orthosilicate(TEOS) using a sol-gel process as well as pyromellitic dianhydride (PMDA) and 4,4-oxydianiline (ODA). 1,4-cyclohexanedicarboxylic acid (1,4-CHDA) was added as a coupling agent. The results showed that the tensile and dielectric properties of the hybrid films were improved. The presence of an alicyclic moiety containing silica in PI reduced the dielectric constant considerably to 2.83, which was lower than that of pristine PI.
In Chapter 7, polyimide hybrid with fluoridated silica particles and highly transparent UV curable coating formulations were obtained using silica particles with different functional groups. The prepared hybrid UV curable coating materials exhibited excellent transparency, good hydrophobic, and oleophobic properties in addition to the high thermal stability and high pencil hardness.
In this dissertation, transparent and colorless polyimide films were prepared through hybridization with inorganic materials such as graphene oxide, silica nano particle, and silver nanowire. In addition, organic-inorganic hybrid UV curable coating materials capable of UV curable were prepared to prevent fingerprints of touch panels.
In Chapters 1 and 2, the background and literature survey for polyimide, organic hybrids and UV curable coating materials are described.
In Chapter 3, a new imidazole containing diamine was synthesized to prepare photoconductive polyimides (PIs) with various dianhydrides based on the fact that the imidazole ring is a useful n-type block with high electron affinity and good thermal stability. All the PIs that were soluble in common polar organic solvents were transparent and exhibited high thermal stability.
In Chapter 4, effects of crosslinking agents on polyimide/graphene oxide hybrid films were investigated. For this work, the surface of graphene oxide (GO) was modified with amine groups using 4-aminobenzylamine (4-ABA) to improve compatibility. The mechanical, thermal and optical properties of the PIs were investigated. The composites prepared with rigid crosslinking agent exhibited better transparency due to reducing the influence of the charge transfer complex (CTC) by increasing the free volume between the polyimide
chains.
In Chapter 5, highly flexible, transparent, and conductive polyimide (PI) hybrid film with good thermal stability was fabricated by embedding reduced graphene oxide (rGO) coated silver nanowire (AgNW) into colorless poly(amic acid) using a spray coating method, followed by thermal imidization. The PI/AgNW/rGO conductive film exhibited good thermal stability, high optical transparency, and hydrophobic surface.
In Chapter 6, polyimide (PI)/silica hybrid films were prepared from tetraethyl orthosilicate(TEOS) using a sol-gel process as well as pyromellitic dianhydride (PMDA) and 4,4-oxydianiline (ODA). 1,4-cyclohexanedicarboxylic acid (1,4-CHDA) was added as a coupling agent. The results showed that the tensile and dielectric properties of the hybrid films were improved. The presence of an alicyclic moiety containing silica in PI reduced the dielectric constant considerably to 2.83, which was lower than that of pristine PI.
In Chapter 7, polyimide hybrid with fluoridated silica particles and highly transparent UV curable coating formulations were obtained using silica particles with different functional groups. The prepared hybrid UV curable coating materials exhibited excellent transparency, good hydrophobic, and oleophobic properties in addition to the high thermal stability and high pencil hardness.
주제어
#Polyimide Nanohybrid Information Materials 폴리이미드 나노하이브리드 정보 소재
※ AI-Helper는 부적절한 답변을 할 수 있습니다.