共价键法合成MXene/CNTs杂化填料增强聚酰胺复合材料力学性能

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-05-11 DOI:10.1016/j.coco.2025.102451

Jinping Guo, Xi Lu, Guangyu Zhu, Yanxia Cao, Yanyu Yang, Jianfeng Wang, Wanjie Wang

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引用次数: 0

摘要

以POE-g-MAH和化学杂化MXene/碳纳米管（M6C）为填料，通过两步熔融共混制备了一种新型超韧PA复合材料。采用6-氨基己醇修饰的碳纳米管（CNTs）与接枝对氨基苯甲酸的MXene进行化学反应制备了这种新型化学杂化填料。M6C填料可以有效减小POE-g-MAH畴的尺寸，并有选择地分布在基体与POE-g-MAH之间的界面上。其中，PA1012/mPOE/M6C复合材料（重量比= 90:10:1）的抗拉强度比PA1012/mPOE （45.09 MPa）提高了28.58%，冲击韧性达到98.27 kJ/m2，比纯PA1012基体提高了约10倍。研究还发现，复合材料的关键力学参数与从流变学数据中获得的凝胶点相对应。进一步探讨了PA复合材料的超韧增强机理。这一研究成果将为控制聚合物复合材料的结构和性能带来新的视角。

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Synthesis of MXene/CNTs hybrid fillers via covalent bonding for enhancing mechanical properties of polyamide composites

A new super-tough PA composites was developed via two-step melt blending with POE-g-MAH and chemical hybrid MXene/Carbon nanotubes (M6C) fillers. This new chemical hybrid filler was prepared by the chemical reaction between 6-Aminohexanol-modified Carbon nanotubes (CNTs) and MXene grafted with p-aminobenzoic acid. M6C fillers can effectively reduce the sizes of POE-g-MAH domains and selectively distribute in the interface between the matrix and POE-g-MAH. Particularly, the tensile strength of PA1012/mPOE/M6C composites (weight ratio = 90:10:1) increased by 28.58 % compared with PA1012/mPOE (45.09 MPa), and the impact toughness reached up to 98.27 kJ/m², which was about 10 times higher than neat PA1012 matrix. It also found that the key mechanical parameters of these composites were corresponding to the gel point acquired from rheology data. Furthermore, the mechanism of super toughness and reinforcement of PA composites had been investigated. This research will bring new sights for controlling the structure and properties of polymer composites.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.