基于氨基-碳硼烷复合固化机理的邻苯二腈树脂韧性和热性能的协同改善

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-04-03 DOI:10.1016/j.compositesa.2025.108903

Zichun Ding , Jianjian Jiao , Yuhang Wang, Runze Liu, Qing Wang, Jianing Guo, Siying Wang, Lishuai Zong, Xigao Jian, Jinyan Wang

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引用次数: 0

摘要

超耐热邻苯二腈树脂面临着耐温与韧性平衡的严峻挑战，严重影响了其在耐高温结构复合材料领域的应用。本文首先选择了一种含苯基-s-三氮嘧啶和悬垂氨基的低聚芳基醚（AFT-Ph/PAFT-Ph）作为改性剂，与含碳硼烷的邻苯二腈预聚物（CEPN）共固化，以协同提高其韧性和耐热性能。优化后的复合材料的抗折强度和冲击强度分别达到278.6 MPa和58.4 kJ/m2，分别比空白对照提高了92.7%和1091.8%。玻璃化转变温度（Tg）与空白对照组保持一致，均超过550℃。此外，Td5%-N2在空白706℃时比改性材料的713℃时略有增加。同时对上述协同改进机制进行研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synergistic improvement of toughness and thermal properties of phthalonitrile resin based on the multiple curing mechanism of amino-carborane

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Synergistic improvement of toughness and thermal properties of phthalonitrile resin based on the multiple curing mechanism of amino-carborane

Ultra heat-resistant phthalonitrile resin has faced serious challenges of the trade-off between temperature resistance and toughness and seriously affects its application in the field of temperature resistant structural composites. In this work, a kind of oligo (aryl ethers) containing phenyl-s-triazine and pendent amino group (AFT-Ph/PAFT-Ph) were first selected as modifier co-cured with phthalonitrile prepolymers containing a carborane (CEPN) to achieve synergistic improvement in toughness and heat resistance performance. The flexural and impact strengths of optimized composites reach 278.6 MPa and 58.4 kJ/m², which are increased by 92.7 % and 1091.8 % compared to the blank contrast. The glass transition temperature (T_g) remained consistent with that of the blank control group, both exceeding 550 ℃. Furthermore, the T_d5%–N₂ shows a marginal increase from 706 ℃ in the blank contrast to 713 ℃ in the modified material. Simultaneously conducting research on the mechanism of collaborative improvement mentioned above.

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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.