Fracture behavior of hybrid epoxy nanocomposites based on multi-walled carbon nanotube and core-shell rubber

IF 9.9 2区 材料科学 Q1 Engineering
Zewen Zhu , Hengxi Chen , Qihui Chen , Cong Liu , Kwanghae Noh , Haiqing Yao , Masaya Kotaki , Hung-Jue Sue
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引用次数: 8

Abstract

The dispersion of nanoparticles plays a key role in enhancing the mechanical performance of polymer nanocomposites. In this work, one hybrid epoxy nanocomposite reinforced by a well dispersed, zinc oxide functionalized, multi-wall carbon nanotube (ZnO-MWCNT) and core-shell rubber (CSR) was prepared, which possesses both high modulus and fracture toughness while maintaining relatively high glass transition temperature (Tg). The improved fracture toughness from 0.82 ​MPa ​m1/2 for neat epoxy to 1.46 ​MPa ​m1/2 for the ternary epoxy nanocomposites is resulted from a series of synergistic toughening mechanisms, including cavitation of CSR-induced matrix shear banding, along with the fracture of MWCNTs and crack deflection. The implication of the present study for the preparation of high-performance polymer nanocomposites is discussed.

基于多壁碳纳米管和核壳橡胶的杂化环氧纳米复合材料的断裂行为
纳米颗粒的分散对提高聚合物纳米复合材料的力学性能起着关键作用。在这项工作中,制备了一种由分散良好的氧化锌功能化多壁碳纳米管(ZnO-MWCNT)和核壳橡胶(CSR)增强的杂化环氧纳米复合材料,该复合材料具有高模量和断裂韧性,同时保持较高的玻璃化转变温度(Tg)。断裂韧性从纯环氧树脂的0.82 MPa m1/2提高到三元环氧纳米复合材料的1.46 MPa m1/2,这是一系列协同增韧机制的结果,其中包括:cr诱导的基体剪切带空化、MWCNTs断裂和裂纹挠曲。讨论了本研究对制备高性能聚合物纳米复合材料的意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nano Materials Science
Nano Materials Science Engineering-Mechanics of Materials
CiteScore
20.90
自引率
3.00%
发文量
294
审稿时长
9 weeks
期刊介绍: Nano Materials Science (NMS) is an international and interdisciplinary, open access, scholarly journal. NMS publishes peer-reviewed original articles and reviews on nanoscale material science and nanometer devices, with topics encompassing preparation and processing; high-throughput characterization; material performance evaluation and application of material characteristics such as the microstructure and properties of one-dimensional, two-dimensional, and three-dimensional nanostructured and nanofunctional materials; design, preparation, and processing techniques; and performance evaluation technology and nanometer device applications.
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