Effect of Diamine Composition on Thermo-Mechanical Properties and Moisture Absorption of Polyimide Films

聚酰亚胺 均苯四甲酸二酐 BPDA公司 材料科学 傅里叶变换红外光谱 复合材料 热重分析 二胺 高分子化学 化学工程 图层(电子) 工程类
作者
Yun-Jun Park,Duk-Man Yu,Jong‐Ho Choi,Jeongho Ahn,Young‐Taik Hong
出处
期刊:Polymer(Korea) 卷期号:36 (3): 275-280 被引量:2
标识
DOI:10.7317/pk.2012.36.3.275
摘要

Pyromellitic dianhydride(PMDA), 3,3'-4,4'-benzopenonetetracarboxylic dianhydride(BPDA) 그리고 $p$ -phenylenediamine( $p$ -PDA)와 함께 1,4-bis(4-aminophenoxy)benzene(1,4-APB)와 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane(HFBAPP)를 각각 이용하여 폴리아믹산을 합성하였고, 이를 열적 이미드화 공정을 통하여 폴리이미드 필름을 제조하였다. 제조된 필름은 퓨리에 변환 적외선 분광기(FTIR), 열 중량 분석기(TGA), 열 기계 분석기(TMA), 동 역학적 거동 분석기(DMA), 그리고 만능 인장 시험기(UTM) 등을 이용하여 화학 구조 및 열적 기계적 특성을 조사하였다. 1,4-APB와 HFBAPP의 조성이 증가함에 따라 열적 기계적 물성과 흡습률이 낮아지는 경향을 나타내었고, 동박과 비슷한 열팽창계수(CTE)를 가진 폴리이미드 필름의 경우 HFBAPP를 이용한 필름이 1,4-APB를 이용한 필름보다 향상된 열적 특성과 낮은 흡습률 결과를 나타내었다. 이와 같이 본 연구에서 합성된 폴리이미드 필름은 유연성 회로 기판의 flexible copper clad laminates(FCCL)를 위한 기본 필름으로 적용할 수 있을 것으로 판단된다. Poly(amic acid)s were successfully synthesized from 1,4-bis(4-aminophenoxy)benzene (1,4-APB) or 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (HFBAPP) with pyromellitic dianhydride (PMDA), 3,3'-4,4'-benzopenonetetracarboxylic dianhydride (BPDA) and $p$ -phenylenediamine ( $p$ -PDA) and then they were effectively converted into polyimide films by thermal imidization. The chemical structure and thermo-mechanical properties of polyimide films were examined using Fourier transform infrared spectroscopy (FTIR), thermo-gravimetric analyzer (TGA), thermo-mechanical analyzer, dynamic mechanical analyzer (DMA) and universal tensile machine (UTM). The moisture absorption, thermal and mechanical properties of polyimide films decreased with increasing the amount of 1,4-APB and HFBAPP. The polyimide films using HFBAPP showed lower properties than that of 1,4-APB at the same ratio, but it displayed better thermal properties and lower moisture absorption at the similar coefficient of thermal expansion (CTE) with a copper. On the basis of our finding, it is concluded that 4-component polyimide films could be utilized for base films for flexible copper clad laminates (FCCL) of flexible printed circuit boards.

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