Damage visualization and enhanced interlaminar shear strength of carbon fiber reinforced composites with Ni/PUF/PU@ER microcapsules

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-10-03 DOI:10.1016/j.compositesa.2025.109338

Qian Ren, Xiaoyu Zhang, Xin Zhang

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引用次数: 0

Abstract

Carbon fiber reinforced polymers (CFRP) are utilized in a variety of fields, but they are prone to delamination, which can cause substantial degradation to the properties and limit the usage. Here, Ni/PUF/PU@ER (NPPER) microcapsules were introduced into the composites to improve the interlaminar shear strength (ILSS). The PUF/PU@ER (PPER) microcapsules were first synthesized with epoxy resin as the healing agent, followed by electroless plating to deposit metal Ni on the surface. The microsphere compression tests demonstrated that the NPPER had superior strength (41.7 MPa) compared to the PPER. When 20 w.t.% PPER was added, the ILSS reduced to 32.8 MPa compared with the ILSS of the original specimen (36.7 MPa), and the healing efficiency increased to 81.8 %. However, due to the robustness of the NPPER, the ILSS increased to 40.3 MPa with 5 w.t.% NPPER, which was 9.8 % higher than that of the original specimen, and the highest healing efficiency was 52.0 % with 20 w.t.% NPPER. Furthermore, the NPPER with damage visualization was prepared using epoxy resin and 2′,7′-Dichlorofluorescein as core materials, which can be utilized to imply the occurrence and healing of damage by the change of color, promoting the development of intelligent and high-performance self-healing CFRP.

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Ni/PUF/PU@ER微胶囊碳纤维增强复合材料的损伤可视化及层间剪切强度增强

碳纤维增强聚合物（CFRP）被广泛应用于各种领域，但其易发生分层，导致其性能严重下降，限制了其使用。在复合材料中引入Ni/PUF/PU@ER （NPPER）微胶囊，提高了复合材料的层间剪切强度（ILSS）。首先以环氧树脂为愈合剂合成PUF/PU@ER （PPER）微胶囊，然后通过化学镀在表面沉积金属Ni。微球压缩试验结果表明，NPPER具有较好的强度（41.7 MPa）。当掺量为20wt %时，ILSS较原始试样（36.7 MPa）降低至32.8 MPa，愈合效率提高至81.8%。然而，由于NPPER的鲁棒性，当NPPER为5 w.t.%时，ILSS增加到40.3 MPa，比原始样品提高了9.8%，当NPPER为20 w.t.%时，愈合效率最高，为52.0%。以环氧树脂和2 ',7 ' -二氯荧光素为核心材料，制备了具有损伤可视化功能的NPPER，可通过颜色的变化来暗示损伤的发生和愈合，促进智能高性能自修复CFRP的发展。

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

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.