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通过表面处理和氧化石墨烯夹层实现玻璃纤维-铝层压板的协同分层增韧

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf.

作者信息

Wu Xiaopeng, Ning Huiming, Liu Yaolu, Hu Ning, Liu Feng, Wang Shu, Huang Kaiyan, Jiao Yudu, Weng Shayuan, Liu Qiang, Wu Liangke

机构信息

College of Aerospace Engineering, Chongqing University, 174 Shazheng St., Shapingba District, Chongqing, 400044, People's Republic of China.

Chongqing Key Laboratory of Heterogeneous Material Mechanics, Chongqing, 400044, People's Republic of China.

出版信息

Nanoscale Res Lett. 2020 Apr 7;15(1):74. doi: 10.1186/s11671-020-03306-z.

DOI:10.1186/s11671-020-03306-z
PMID:32266671
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7138898/
Abstract

The synergistic effects of surface treatment and interleaf on the interlaminar mechanical properties of glass fiber-aluminum laminates were studied. Aluminum sheets were treated with alkaline etching. Meanwhile, a graphene oxide (GO) interleaf was introduced between the aluminum sheet and the glass fiber-reinforced epoxy composite. Double cantilever beam and end-notched flexure tests were employed to evaluate the interlaminar fracture toughness of the glass fiber-aluminum laminates. The obtained results show that the toughening efficiency of the interleaf is dependent on the aluminum surface characteristics as well as the GO loading. Further comparison reveals that the highest mode-I and mode-II fracture toughnesses are obtained in the specimens with alkali etching treatment and addition of GO interleaf with 0.5 wt% of GO loading, which are 510% and 381% higher in comparison to the plain specimen. Fracture surfaces were observed to further uncover the reinforcement mechanisms.

摘要

研究了表面处理和中间层对玻璃纤维-铝层压板层间力学性能的协同作用。铝板采用碱性蚀刻处理。同时，在铝板与玻璃纤维增强环氧复合材料之间引入了氧化石墨烯（GO）中间层。采用双悬臂梁和端部切口弯曲试验来评估玻璃纤维-铝层压板的层间断裂韧性。所得结果表明，中间层的增韧效率取决于铝表面特性以及GO含量。进一步比较发现，在经过碱蚀刻处理并添加0.5 wt% GO含量的GO中间层的试样中，获得了最高的I型和II型断裂韧性，与普通试样相比分别提高了510%和381%。观察断口表面以进一步揭示增强机理。

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