Advancing CFRP durability: Interfacial and weathering performance of epoxy and acrylic matrices

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY Composites Part B: Engineering Pub Date : 2025-02-17 DOI:10.1016/j.compositesb.2025.112315

Jeongcheol Kim , Sukwon Kang , Il Seong , Jeong Woo Jeon , Donghyen Lee , Jong-Hyun Kim , Dong-Jun Kwon

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Abstract

This study investigates the enhancement of weather resistance in carbon fiber-reinforced plastic (CFRP) by controlling the polymer matrix, focusing on the effects of acrylic resin. As the application of CFRP expands across various industries, its durability in outdoor environments has become a critical factor for structural materials. The mechanical properties of the polymer matrix were evaluated through tensile and flexural tests, and it was found that acrylic resin exhibited approximately 15 % lower mechanical properties compared to epoxy resin. This difference was observed to result in reduced performance of acrylic-based composite materials under neat conditions. However, after UV exposure, acrylic-based CFRP was shown to resist yellowing and maintain its mechanical properties, whereas epoxy-based CFRP experienced a 16 % decrease. The surface of CFRP was analyzed using FE-SEM, and differences at the interface were identified: fiber exposure and damage were observed in epoxy-based CFRP, while only surface cracks occurred in acrylic-based CFRP. Surface energy analysis was conducted, and it was confirmed that UV degradation increased the dispersive component of epoxy-based CFRP due to exposed carbon fiber (CF). Surface analyses using XPS and FT-IR revealed changes in the chemical composition of the CFRP surfaces, with increased oxidation of epoxy-based CFRP after UV exposure, while the acrylic-based CFRP showed more stable surface chemistry. These findings suggest that acrylic-based CFRP can be utilized in applications requiring improved weather resistance and long-term stability.

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.