Synthesis and characterization of cyano-terminated bisphenol AF-type polyarylene ether nitrile

IF 1.8 4区化学 Q3 POLYMER SCIENCE High Performance Polymers Pub Date : 2023-08-08 DOI:10.1177/09540083231183099

X. Xiong, Donghui Liu, R. Ren, Jing Wang

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Abstract

Four novel phthalonitrile-capped polyarylene ether nitrile oligomers containing trifluoromethyl groups (FPEN-Ph) with different molecular weight were designed and synthesized by adjusting the ratio of bisphenol AF (BPAF) and 2,6-dicholorobenzonitrile (DCBN). The molecular structure of FPEN-Ph oligomers were characterized and analyzed by FTIR, 1HNMR and Gel permeation chromatography. Their curing behaviors were studied by Differential scanning calorimetry and rheological tests, and curing kinetics were also discussed by gel method in detail. The glass fiber cloth reinforced FPEN-Ph composites (FPEN-Ph/GF) had flexural strengths of 415.9–497.5 MPa, shear strengths of 34.5–50.5 MPa, and glass transition temperatures ( Tgs) in the range of 211.3°C–416.6°C. The initial thermal decomposition temperatures ( T5%) of various FPEN-Ph cured products were higher than 500°C under nitrogen. Meanwhile, Fracture morphologies showed that the GF/FPEN-Ph composites had excellent interfacial adhesion between FPEN-Ph matrix and GF reinforcement. Herein, the FPEN-Ph resin could be a good candidate for high-performance polymeric composites and the advanced FPEN-Ph/GF composites can be used under high temperature environment.

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端氰双酚af型聚芳醚腈的合成与表征

通过调节双酚AF（BPAF）和2，6-二氯丁腈（DCBN）的比例，设计合成了四种不同分子量的邻苯二甲腈封端的聚芳醚腈低聚物（FPEN-Ph）。通过红外光谱、核磁共振氢谱和凝胶渗透色谱对FPEN-Ph低聚物的分子结构进行了表征和分析。用差示扫描量热法和流变学实验研究了它们的固化行为，并用凝胶法详细讨论了固化动力学。玻璃纤维布增强的FPEN-Ph复合材料（FPEN-Ph/GF）的弯曲强度为415.9–497.5 MPa，剪切强度为34.5–50.5 MPa，玻璃化转变温度（Tgs）在211.3°C–416.6°C范围内。各种FPEN-Ph固化产物在氮气下的初始热分解温度（T5%）高于500°C。同时，断口形貌表明，GF/FPEN-Ph复合材料具有良好的界面粘附性能。在此，FPEN-Ph树脂可能是高性能聚合物复合材料的良好候选者，并且先进的FPEN-Ph/GF复合材料可以在高温环境下使用。

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来源期刊

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.