耐高温石英织物/邻苯二腈复合材料,具有优异的波纹传输性能

IF 1.8 4区 化学 Q3 POLYMER SCIENCE High Performance Polymers Pub Date : 2024-04-03 DOI:10.1177/09540083241244536
Yuane Wu, Yifan Huang, Xinyue Shi, Xiaohan Sha, Song Li
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引用次数: 0

摘要

本研究报告介绍了石英织物增强邻苯二腈复合材料的制作过程,该复合材料具有良好的热性能和透波性能。使用差示扫描量热法(DSC)和动态流变分析法(DRA)研究了邻苯二腈封端低聚物 PN-SF 的固化行为,结果表明其固化前温度仅为 175°C,具有良好的可加工性。热固性材料在 462°C 左右的温度下会出现 5%的失重,而在温度升至 400°C 和 400°C/2 小时的老化过程中,失重率仅为 10%,这表明所制备的热固性材料具有出色的热性能。此外,所制得的热固性塑料还具有极高的玻璃化转变温度(Tg),约为 420°C。此外,石英织物/邻苯二腈复合材料还具有极其优异的机械性能。重要的是,在入射角为 0°∼35° 的特定频率下,其传输效率可达 87%,这表明其具有良好的波导传输性能。同时,该复合材料在 12∼18 GHz 范围内表现出稳定且相对较低的介电常数和介电损耗。这项研究可作为在各种应用环境中快速评估高耐热性和波纹传输邻苯二腈树脂基复合材料的基础。
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High-temperature resistance quartz-fabric/phthalonitrile composite with excellent waving-transmitting performance
This study reports the fabrication of quartz fabric reinforced phthalonitrile composite possessing good thermal and wave-transmitting properties. Phthalonitrile-terminated oligomer PN-SF curing behavior was investigated using differential scanning calorimetry (DSC) and dynamic rheological analysis (DRA), revealing a good processability pre-curing temperature of only 175°C. The thermoset exhibited the 5% loss temperature about 462°C, and after the temperature rising to 400°C and 400°C/2 h aging, the weight loss was only 10%, indicating that the resulting thermoset possessed outstanding thermal property. Moreover, the resulting thermosets possessed extremely high glass transition temperature (Tg) about 420°C. Besides, the quartz fabric/phthalonitrile composite possessed extremely excellent mechaical properties. Importantly, the transmission efficiencies can reach 87% at a certain frequency at the incident angle of 0°∼35°, indicating its well waving-transmitting performance. Meanwhile, the composite exhibited stable and relatively low dielectric constant and dielectric loss at the range of 12∼18 GHz. This study can serve as a basis for rapid evaluation of the high heat resistance and waving-transmitting phthalonitrile resin-based composite in various application environments.
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来源期刊
High Performance Polymers
High Performance Polymers 化学-高分子科学
CiteScore
4.20
自引率
14.30%
发文量
106
审稿时长
1.2 months
期刊介绍: Health Services Management Research (HSMR) is an authoritative international peer-reviewed journal which publishes theoretically and empirically rigorous research on questions of enduring interest to health-care organizations and systems throughout the world. Examining the real issues confronting health services management, it provides an independent view and cutting edge evidence-based research to guide policy-making and management decision-making. HSMR aims to be a forum serving an international community of academics and researchers on the one hand and healthcare managers, executives, policymakers and clinicians and all health professionals on the other. HSMR wants to make a substantial contribution to both research and managerial practice, with particular emphasis placed on publishing studies which offer actionable findings and on promoting knowledge mobilisation toward theoretical advances. All papers are expected to be of interest and relevance to an international audience. HSMR aims at enhance communication between academics and practitioners concerned with developing, implementing, and analysing health management issues, reforms and innovations primarily in European health systems and in all countries with developed health systems. Papers can report research undertaken in a single country, but they need to locate and explain their findings in an international context, and in international literature.
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