Preparation and functional study of epoxy composites reinforced with ultra-low content single-walled carbon nanotubes

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Reinforced Plastics and Composites Pub Date : 2024-08-16 DOI:10.1177/07316844241273843

Yuxuan Yang, Wei Li, Xiaoyu Cui, Kaifei Ding, Lu Zhang, Hongmei Li, Baichen Wang, Keming Ma, Shaowei Lu

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引用次数: 0

Abstract

In this paper, ultra-low content single-walled carbon nanotube(SWCNT)/epoxy composites were prepared by non-covalent modification of SWCNTs, which improved the dispersion of SWCNTs in epoxy resin, and their properties were investigated. It was shown that the electrical conductivity of SWCNT/epoxy composites increased by 7 orders of magnitude over that of epoxy resin when the content of SWCNTs was 0.005 wt%. The impact strength, tensile strength, and elastic modulus of the materials were increased by 47.9%, 58.9%, and 19.0%, respectively, and the strengthening mechanism of SWCNTs on the matrix was analyzed by SEM. Then SWCNTs were introduced into carbon fiber (CF)/epoxy composites and carbon fiber pressure vessels. In comparison to CF/epoxy composites, the shear and tensile strengths of SWCNT/CF/epoxy composites exhibited an increase of 49.2% and 9.8%, respectively, and the bursting pressure of nano-modified pressure vessels was increased by 15.5%. This study provides a new application method for nano-modified epoxy resins and broadens the application fields of epoxy resins.

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超低含量单壁碳纳米管增强环氧树脂复合材料的制备与功能研究

本文通过对单壁碳纳米管进行非共价改性，提高了单壁碳纳米管在环氧树脂中的分散性，制备了超低含量的单壁碳纳米管/环氧树脂复合材料，并对其性能进行了研究。结果表明，当 SWCNT 的含量为 0.005 wt% 时，SWCNT/环氧树脂复合材料的导电率比环氧树脂的导电率提高了 7 个数量级。材料的冲击强度、拉伸强度和弹性模量分别提高了 47.9%、58.9% 和 19.0%，并通过扫描电镜分析了 SWCNT 对基体的增强机理。然后将 SWCNTs 引入碳纤维（CF）/环氧树脂复合材料和碳纤维压力容器中。与碳纤维/环氧树脂复合材料相比，SWCNT/碳纤维/环氧树脂复合材料的剪切强度和拉伸强度分别提高了 49.2% 和 9.8%，纳米改性压力容器的爆破压力提高了 15.5%。该研究为纳米改性环氧树脂提供了一种新的应用方法，拓宽了环氧树脂的应用领域。

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来源期刊

Journal of Reinforced Plastics and Composites 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.50%

发文量

审稿时长

1.3 months

期刊介绍： The Journal of Reinforced Plastics and Composites is a fully peer-reviewed international journal that publishes original research and review articles on a broad range of today''s reinforced plastics and composites including areas in: Constituent materials: matrix materials, reinforcements and coatings. Properties and performance: The results of testing, predictive models, and in-service evaluation of a wide range of materials are published, providing the reader with extensive properties data for reference. Analysis and design: Frequency reports on these subjects inform the reader of analytical techniques, design processes and the many design options available in materials composition. Processing and fabrication: There is increased interest among materials engineers in cost-effective processing. Applications: Reports on new materials R&D are often related to the service requirements of specific application areas, such as automotive, marine, construction and aviation. Reports on special topics are regularly included such as recycling, environmental effects, novel materials, computer-aided design, predictive modelling, and "smart" composite materials. "The articles in the Journal of Reinforced Plastics and Products are must reading for engineers in industry and for researchers working on leading edge problems" Professor Emeritus Stephen W Tsai National Sun Yat-sen University, Taiwan This journal is a member of the Committee on Publication Ethics (COPE).