Fluorine-Containing Polyether Ketones Based on Fluorene Side Groups with Low Dielectric Constants and Excellent Thermal Performance

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

The rapid advancement of high-frequency communication networks has imposed more rigorous demands on the overall characteristics dielectric materials. Poly(aryl ether ketone)s (PAEKs) are good candidate materials for applications in microelectronic devices due to their excellent thermal stability, mechanical properties, and chemical stability. In this work, we endeavored incorporate large-volume fluorene structures into fluoro-PAEKs, employing strategies enhance polymer free volume reduce polarizations order decrease values Dk Df at high frequency. Therefore, a series poly(ether ketone) (PEK-pOCFBPF-X) copolymers were designed synthesized through nucleophilic polymerization using 4,4-difluorobenzophenone (DFK), phenolphthalein anilide-containing trifluoromethoxy groups (PPPBP-pOCF3), structurally ordered bisphenol (BPF) as monomers. results demonstrate that introduction BPF fluoro-PAEKs resin leads low constant (2.713–2.782@10 GHz) loss (0.00597–0.00825@10 GHz), well exceptional properties (Tg = 232–240 °C, Td5% 518–536 °C). Moreover, copolymer exhibits strength (tensile ≥ 81 MPa), minimal water absorption (≤0.0063), solubility. incorporation fluorenyl significantly enhances fraction (5.5%–5.8%), resulting lower density reduction constant. Simultaneously, by introducing C–F bonds with polarizability, polarizability is effectively diminished. These films, which exhibit superior stability constant, have great potential high-performance flexible electronic packaging field usage.

Язык: Английский

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Fluorinated poly(aryl ether)s with extremely low dielectric constant and high thermal stability by amino and epoxy cross-linking networks

Journal of Macromolecular Science Part A, Год журнала: 2025, Номер unknown, С. 1 - 13

Опубликована: Март 4, 2025

Язык: Английский

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Phenolphthalein-based polyether sulfone separator with multi-carbonyl induced uniform lithium deposition for high-performance lithium metal batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162449 - 162449

Опубликована: Апрель 1, 2025

Язык: Английский

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Heterocyclic aramid nanofiber aerogel membrane with ultra-low dielectric constant and excellent thermal insulation based on upcycled waste heterocyclic aramid fiber

Polymer, Год журнала: 2024, Номер 315, С. 127830 - 127830

Опубликована: Ноя. 13, 2024

Язык: Английский

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