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Interfacial failure mechanism of glass fiber reinforced composites
by
Huali Hao
School of Civil Engineering, Wuhan University, Wuhan, P.R.China. 430072
Email: haohuali@whu.edu.cn

ABSTRACT
The weak interfacial adhesion has significantly affected the durability, long-term reliability, and performance of glass fiber-reinforced (GFR) epoxy composites. The surface of glass fiber can be modified by grafting different functional groups or coating different materials. Experimental results have shown these modification techniques have a positive effect on the strength, toughness, and thermal insulation performance of GFR composites. However, as the strengthening mechanism has not been fully explored, the trial-and-error approach is still the primary method for surface modification technique. In this presentation, the effect of grafted functional groups and coating on the interfacial properties between glass fiber and epoxy matrix has been investigated and compared. The interfacial failure mechanism of different surface-modified GFR epoxy has been discussed. This work provides a theoretical guideline to optimize the interface adhesion of GFR and lays a foundation for the accurate control of interfacial properties for GFR composites by surface modification
 

ABOUT THE SPEAKER
Huali Hao, Associate Professor at Wuhan University. She received bachelor's degree from Wuhan University (2010), master's degree from Institute of Metal Research, Chinese Academic of Science (2013), and doctoral degree from City University of Hong Kong (2019), followed by postdoctoral fellow. She has worked at Wuhan University since 2020. Her research focuses on Interfacial Behavior, including interfacial failure, modification, and interfacial reactions. Her research interests include heterogeneous materials, bio-inspired materials, and green concrete materials. Up to now, she has published more than 20 academic papers indexed by SCI and holds 5 Chinese patents and 1 USA patent. She was awarded HKPFS during her doctoral study and “Excellent Young Talents of Wuhan Yingcai” in 2021.