Swelling pretreatment to promote the degradation of epoxy composites and retention of carbon fiber properties

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-06-17 DOI:10.1016/j.compositesa.2025.109127

Tianxiang Fan , Xue Gu , Yanyan Guo , Bin Cao , Jing Xu , Fuyou Ke , Ye Chen

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引用次数: 0

Abstract

With the increasing demand for lightweight materials, carbon fiber reinforced epoxy composites have seen rapid growth, leading to significant waste management challenges. The highly cross-linked epoxy matrix limits degradation efficiency, but swelling pretreatment enhances diffusion, accelerating degradation. However, concerns remain regarding volatile solvents, solvent selection and the effects on recovered carbon fibers. In this study, N-methyl-2-pyrrolidone, optimized using Hansen Solubility Parameters, was employed for swelling pretreatment. The results demonstrated a threefold increase in degradation efficiency while preserving carbon fiber strength from 91.8% to 98.6%. Furthermore, interfacial properties improved, which is crucial for broadening the applications of recycled carbon fibers. These findings highlight the potential of swelling pretreatment in facilitating efficient composite recycling while maintaining properties of carbon fiber, offering a promising route for high-value reuse.

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膨胀预处理促进环氧复合材料的降解和碳纤维性能的保留

随着对轻量化材料的需求不断增加，碳纤维增强环氧复合材料的快速增长，导致了重大的废物管理挑战。高度交联的环氧树脂基体限制了降解效率，但溶胀预处理增强了扩散，加速了降解。然而，对挥发性溶剂、溶剂选择和对回收碳纤维的影响的关注仍然存在。本研究采用Hansen溶解度参数优化的n -甲基-2-吡咯烷酮进行溶胀预处理。结果表明，在保持碳纤维强度从91.8%到98.6%的同时，降解效率提高了三倍。此外，界面性能得到改善，这对扩大再生碳纤维的应用至关重要。这些发现突出了膨胀预处理在促进复合材料高效回收的同时保持碳纤维性能的潜力，为高价值再利用提供了一条有前途的途径。

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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.