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湿热对玻璃纤维/乙烯基酯和玻璃纤维/不饱和聚酯复合材料的影响：耐久性性能与实验室评估

Hygrothermal Effect on GF/VE and GF/UP Composites: Durability Performance and Laboratory Assessment.

作者信息

Wang Dengxia, Sun Yan, Duan Jian, Xie Keyong, Li Jikai, An Qi, Wang Xinbo

机构信息

The 7th Research Department, Shandong Institute of Non-Metallic Materials, Tianzhuang East Road No. 3, Jinan 250031, China.

Institute of Laser & Optoelectronics, School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.

出版信息

Polymers (Basel). 2024 Feb 26;16(5):632. doi: 10.3390/polym16050632.

DOI:10.3390/polym16050632
PMID:38475314
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10934077/
Abstract

In order to investigate the durability of two kinds of fiber-reinforced composite materials, and obtain the degradation mechanism and failure model in a hygrothermal environment, E-glass- fiber-reinforced composite materials, glass fiber-reinforced epoxy vinyl ester and glass fiber-reinforced unsaturated polyester (named GF/VE and GF/UP, respectively) were chosen to suffer rigorous hygrothermal aging. Their mechanical performance was monitored during the aging process to evaluate their durability. The cause of deterioration of the composite was comprehensively analyzed. Based on the analysis results of attenuated total-reflectance-Fourier-transform infrared spectroscopy (ATR-FTIR), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA), the change mechanism of chain structure of the resin molecule was proposed. SEM (scanning electron microscopy), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were used to analyze the microstructure and degradation mechanism of the fiber and the interface between fiber and matrix. The degradation mechanism of the composite system, including the resin, the fiber and the interface, was obtained, and it was found that the deterioration of the matrix resin caused by the hygrothermal environment was the main factor leading to the decline in composites performance.

摘要

为了研究两种纤维增强复合材料的耐久性，获取其在湿热环境下的降解机理和失效模型，选用E玻璃纤维增强复合材料、玻璃纤维增强环氧乙烯基酯和玻璃纤维增强不饱和聚酯（分别命名为GF/VE和GF/UP）进行严苛的湿热老化试验。在老化过程中监测它们的力学性能以评估其耐久性。对复合材料劣化的原因进行了综合分析。基于衰减全反射傅里叶变换红外光谱（ATR-FTIR）、热重分析（TGA）和动态力学分析（DMA）的分析结果，提出了树脂分子链结构的变化机理。利用扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和X射线衍射（XRD）分析纤维及其与基体界面的微观结构和降解机理。得到了包括树脂、纤维和界面在内的复合体系的降解机理，发现湿热环境导致的基体树脂劣化是导致复合材料性能下降的主要因素。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/cbbba940e8b4/polymers-16-00632-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/6e6af5ed3949/polymers-16-00632-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/73af17ad7f67/polymers-16-00632-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/f3034c76b8e9/polymers-16-00632-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/54a6755da4cb/polymers-16-00632-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/e27622ca1517/polymers-16-00632-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/eff4d7cdde5c/polymers-16-00632-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/7f31d131826e/polymers-16-00632-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/7fa39acae269/polymers-16-00632-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/8c6e29c10f14/polymers-16-00632-g019.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5b5/10934077/1b6c39a9e1f7/polymers-16-00632-g020.jpg

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