유연성 가교제 조절을 통한 실록산계 폴리이미드 필름의 특성분석

다국어 초록 (Multilingual Abstract)

Currently, aromatic polyimide (PI) is in increasing demand in various industries such as semiconductor devices and automobiles due to its high tensile strength and excellent thermal stability. However, aromatic PI suffers from low tensile strain. In order to increase this low tensile strain, high flexible polydimethylsiloxane (PDMS) was added to the main chain of the polymer. While PDMS improves flexibility, it also reduces tensile strength due to weakened intermolecular interactions. To address this issue, a crosslinking strategy was adopted in this study. Various polyimide films were prepared by adjusting the molar equivalence of the crosslinking agent. The structure of the synthesized PI was identified through H-NMR, and the crosslinking PDMS-PI film produced was identified through FT-IR to determine the structure and the presence or absence of crosslinking. In addition, thermal properties of the polyimide and cross-linked polyimide were analyzed through DSC and TGA, and mechanical properties were analyzed using UTM.

목차 (Table of Contents)

• Ⅰ. 서 론 1
• 1.1 폴리이미드(PI) 1
• 1.2 폴리이미드의 가교 4
• 1.3 연구 배경 5
• Ⅱ. 실 험 7
• 2.1 시약 7
• 2.2 PDMS-PI의 합성 8
• 2.3 Crosslinking PDMS-PI 필름의 제작 9
• 2.4 Crosslinking PDMS-PI의 특성 분석 16
• Ⅲ. 결과 및 고찰 17
• 3.1 PDMS-PI의 합성 및 분석 17
• 3.2 Crosslinking PDMS-PI필름의 제작 21
• 3.3 Crosslinking PDMS-PI필름의 열적 특성 분석 31
• 3.4 Crosslinking PDMS-PI필름의 기계적 특성 분석 41
• Ⅳ. 결 론 46
• 참고문헌 48
• Abstract 51