| 초록 |
Polyimides are used in a numerous number of fields in the industry because of their excellent thermal, electrical and mechanical properties. In this study, a series of random copolymer was synthesized based on various backbones. PMDA, BTDA, ODPA was used as an Dianhydride and 4,4’-ODA was used as a Diamine and synthesized into a polyimide film. The polyamic acid was imidized by heat using a certain ramp to form the cyclic polyimide. These films were successfully characterized by confirming the synthesis with the FT-IR. The TGA (Thermogravimetric analyzer) and DSC(Differential Scanning Calorimeter) was used to measure the glass transition temperature. The Dielectric Analyzer was used to examine the dielectric constant of the Polyimide film. This study was conducted to examine the thermal stability and dielectric characteristic of the polyimide that was made into a random copolymer. |
