通过桥接策略制备高性能异氰酸酯基聚酰亚胺薄膜

IF 5.2 1区化学 Q1 POLYMER SCIENCE

Macromolecules Pub Date : 2025-10-16 DOI:10.1021/acs.macromol.5c00026

Xianzhang Leng, Gaohui Sun, Zuodong Yang, Xinfu Guo, Jun Wang, Rongrong Chen, Shihui Han

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引用次数: 0

摘要

以异氰酸酯和酸酐为反应单体合成的异氰酸酯基聚酰亚胺（IBPI）薄膜力学性能较差，限制了其实际应用。本研究引入4,4′-氧化二苯胺（ODA）作为桥接剂，连接二苯基甲烷二异氰酸酯（MDI-50）和4,4′-氧化二苯二酐（ODPA）生成的端酸酐低聚物链段。通过桥接策略获得了在普通有机溶剂中具有高溶解度的高性能IBPI薄膜；这项工作将其标记为PI-X。PI-1.0薄膜的机械性能、热学性能和电学性能均有显著改善。拉伸强度由54.97 MPa提高到108.87 MPa，比纯IBPI膜提高98%。失重5%时，温度从461℃升高到524℃。同时，在1 kHz时介电常数和损耗正切分别降至2.21和0.0047。这些优异的性能表明，IBPI薄膜在微电子工业中具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Fabrication of High-Performance Isocyanate-Based Polyimide Films via a Bridging Strategy

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Fabrication of High-Performance Isocyanate-Based Polyimide Films via a Bridging Strategy

Isocyanate-based polyimide (IBPI) films synthesized using isocyanates and anhydrides as reactive monomers exhibit inferior mechanical performance, limiting their practical applicability. This study introduced 4,4′-oxidianiline (ODA) as a “bridging agent” to connect anhydride-terminated oligomer chain segments generated from diphenylmethane diisocyanate (MDI-50) and 4,4′-oxydiphthalic dianhydride (ODPA). A high-performance IBPI film with high solubility in common organic solvents was obtained via a bridging strategy; this work marked it as PI-X. The mechanical, thermal, and electrical properties of the PI-1.0 film were significantly improved. The tensile strength increased from 54.97 to 108.87 MPa, representing a 98% increase over that of the pure IBPI film. The temperature at 5% weight loss increased from 461 to 524 °C. Meanwhile, the dielectric constant and loss tangent decreased to 2.21 and 0.0047 at 1 kHz, respectively. These excellent performances show that IBPI films have great application prospects in the microelectronics industry.

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来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.