| 초록 |
This article describes the preparation of a kind of photoinitiator-free photosensitive polyimide(PSPI). A group of novel auto-photosensitive polyimideswas prepared based on the flurorinated aromatic diamine 2,2’-bis(3-amino-4-hydroxyphenyl)hexafluoropropane diamine (AHHFP) and 3,3’,5,5’-benzophenonetetracarboxylic dianhydride (BTDA). other polyimideswere synthesized by copolymerization of 4,4’-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) to more decrease dielectric constant and coefficient of thermal expansion.Thepolyimides wereacrylated via a reaction with acryloyl chlroride in the presence of triethyl aminefor the modification of aromatic polyimides. The chemical structure of the resulting polymer was confirmed by 1H NMR and Fourier transform infrared spectroscopy. The samples were characterized by UV analysis, thermogravimetric analysis (TGA) andthermomechanical analysis (TMA), dielectric constant, and so on. Photocuring was tested by lithography. The image was shown by the scanning electron micrograph (SEM). |
