Preparation of micro-nano PBO fiber/polytetrafluoroethylene composite papers with excellent dielectric properties for high frequency wave-transparent applications

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-05-30 DOI:10.1016/j.compositesa.2025.109078

Xiaoyu Weng, Yu Song, Zhiyuan Xiong, Jian Hu, Jin Long

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引用次数: 0

Abstract

Poly(p-phenylene benzobisoxazole) (PBO)/Polytetrafluoroethylene (PTFE) composite materials exhibit substantial potential for wave-transparent applications due to the excellent dielectric properties of raw materials. In this work, we reported a facile paper-making method for preparing large-area micro-nano PBO/PTFE composite papers with uniform and compact structure by compounding PBO chopped fibers (PCFs), PBO nanofibers (PNFs), and PTFE. Notably, the simultaneous formation of an interconnected PBO fiber network and PTFE matrix promotes optimal structural uniformity, while the introduction of PNFs between PCFs and PTFE acts as an interface compatibilizer that effectively reduces interface defects in the papers. These structural advantages contribute to the composite papers’ exceptional dielectric properties (dielectric constant as low as 2.142 and dielectric loss as low as 0.001 at 10 GHz) and high wave-transmission efficiency (exceed 95.8 % across 2–22 GHz). Meanwhile, the composite papers feature favorable thermo-mechanical property and UV aging resistance, demonstrating their high potential in wave-transparent applications.

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具有优异介电性能的微纳PBO纤维/聚四氟乙烯复合纸的制备

聚苯并二苯并异恶唑(PBO)/聚四氟乙烯（PTFE）复合材料由于其原材料优异的介电性能，在透明波应用方面表现出巨大的潜力。本文报道了一种以PBO短切纤维（PCFs）、PBO纳米纤维（pfs）和PTFE为复合材料，制备结构均匀致密的大面积微纳米PBO/PTFE复合纸的简易造纸方法。值得注意的是，同时形成相互连接的PBO纤维网络和PTFE矩阵促进了最佳的结构均匀性，而在PCFs和PTFE之间引入pnf作为界面相容剂，有效地减少了论文中的界面缺陷。这些结构优势使得复合纸具有优异的介电性能（介电常数低至2.142，介电损耗低至0.001）和高的透射效率（在2-22 GHz范围内超过95.8%）。同时，复合纸具有良好的热力学性能和抗紫外线老化性能，在波浪透明方面具有很高的应用潜力。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.