Copolymerization of novel self-promoted curing phthalonitrile with epoxy resin and its thermal property

IF 1.8 4区化学 Q3 POLYMER SCIENCE High Performance Polymers Pub Date : 2024-09-02 DOI:10.1177/09540083241259983

Huaijie Yan, Zhiyi Jia, Dianqiu Jia, Zhipeng Li, Jianxin Rong, Qingxin Zhang, Fuqiang Zhang

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Abstract

The disadvantage of poor thermal performance of epoxy resin limits its application in special fields, therefore we improve the thermal performance of epoxy resin by copolymerizing it with phthalonitrile resin. A novel self-promoted curing phthalonitrile monomer containing pyridine rings and amino groups (APNH) was successfully synthesized using 2-amino-4-hydroxypyridine and 4-nitrophthalonitril, and characterized by FTIR and NMR spectra. DSC confirmed that the APNH monomer exhibits curing behavior that is self-promoting. Copolymerizing the APNH monomer with epoxy resin enhances the thermal performance of the epoxy resin. The curing behavior of the EPNH copolymer was studied using DSC, which revealed two distinct curing peaks. FTIR analysis showed that the EPNH copolymer has formed structures such as triazine, phthalocyanine, and isoindoline. The presence of cyano groups significantly enhances the thermal properties of the copolymer, surpassing those of traditional epoxy resins. This enhancement in thermal performance amplifies with an increase in the content of the APNH monomer. The research indicates that the EPNH copolymer exhibits superior thermal stability and elevated glass transition temperatures, facilitating the application of epoxy resin in specialized areas.

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新型自促进固化邻苯二甲腈与环氧树脂的共聚及其热性能

环氧树脂热性能差的缺点限制了它在特殊领域的应用，因此我们通过与邻苯二腈树脂共聚来改善环氧树脂的热性能。我们利用 2-氨基-4-羟基吡啶和 4-硝基邻苯二甲酰亚胺成功合成了一种含有吡啶环和氨基的新型自促进固化邻苯二甲腈单体（APNH），并利用傅立叶变换红外光谱和核磁共振光谱对其进行了表征。DSC 证实 APNH 单体具有自促进的固化行为。APNH 单体与环氧树脂共聚可提高环氧树脂的热性能。使用 DSC 对 EPNH 共聚物的固化行为进行了研究，结果显示出两个不同的固化峰。傅立叶变换红外分析表明 EPNH 共聚物形成了三嗪、酞菁和异吲哚啉等结构。氰基的存在大大提高了共聚物的热性能，超过了传统环氧树脂的热性能。随着 APNH 单体含量的增加，热性能的提高幅度也会增大。研究表明，EPNH 共聚物具有优异的热稳定性和较高的玻璃化转变温度，有利于环氧树脂在特殊领域的应用。

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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.