Deterioration behaviors of phenolic amine/epoxy-based GFRP laminates exposed to aggressive environments

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING Composites Part A: Applied Science and Manufacturing Pub Date : 2025-05-01 Epub Date: 2025-02-18 DOI:10.1016/j.compositesa.2025.108788

Yinlong Cao , Guanghui Gao , Wenhuan Wang , Genjin Liu , Jiuwen Bao , Yifei Cui , Ying Li

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Abstract

The advanced resin systems are crucial for the application of GFRP in the practical marine engineering. Besides, the reliable performance data on GFRP exposed to marine environment are still lacking. This study aims to comprehensively evaluate the durability-related performance of the GFRP laminates made up of the modified resin. In this experiment, the resin and GFRP laminate specimens were exposed to deionized water (DW), real seawater (RSW), simulated pore solutions of seawater sea sand concrete (SSCSPS) and real marine environment (RME). The results showed that the moisture absorption of GFRP laminates in SSCSPS was higher than that in DW and RSW due to the destruction of GFRP multiphase structures. The tensile strength of the resin exposed to RSW and RME after 90 days was improved due to its post-curing, while that of GFRP laminates decreased by 8–9 %. Besides, it was remarkable that the tensile strength retention of the resin and GFRP laminates immersed in SSCSPS after 90 days was decreased by more than 30 %. The modified prediction model was developed by considering the resin factor on tensile strength of GFRP laminates exposed to various environments. Furthermore, the deterioration mechanisms of GFRP laminates were discussed by morphology characterization.

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酚醛胺/环氧基GFRP层压板在恶劣环境下的劣化行为

先进的树脂体系对玻璃钢在实际海洋工程中的应用至关重要。此外，GFRP在海洋环境下的可靠性能数据仍然缺乏。本研究旨在综合评价改性树脂构成的玻璃钢复合材料的耐久性相关性能。在本实验中，树脂和GFRP层压试件分别暴露于去离子水（DW）、真实海水（RSW）、模拟海水海砂混凝土孔隙溶液（SSCSPS）和真实海洋环境（RME）中。结果表明，由于GFRP多相结构的破坏，SSCSPS中GFRP复合材料的吸湿率高于DW和RSW。由于RSW和RME的后固化作用，树脂在90天后的拉伸强度得到了提高，而GFRP层合板的拉伸强度下降了8 - 9%。此外，在SSCSPS中浸泡90天后，树脂和GFRP层压板的抗拉强度保持率下降了30%以上。考虑树脂因素对玻璃钢复合材料在不同环境下拉伸强度的影响，建立了改进的预测模型。此外，从形貌表征方面探讨了玻璃钢复合材料的劣化机理。

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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.