Interlaminar fracture toughness behaviour of a repairable glass-fibre-reinforced vitrimer for wind-energy applications

被引:4
作者
Amfilochiou, Virginia [1 ]
Debsharma, Tapas [2 ]
De Baere, Ives [2 ]
Du Prez, Filip [2 ]
Van Paepegem, Wim [1 ]
机构
[1] Univ Ghent, Dept Mat Text & Chem Engn, Mech Mat & Struct Grp, Technol Pk 46, B-9052 Zwijnaarde, Belgium
[2] Univ Ghent, Dept Organ & Macromol Chem, Polymer Chem Res Grp, CMaC, Krijgslaan 281 S4 Bis, B-9000 Ghent, Belgium
基金
欧洲研究理事会;
关键词
Vitrimer composites; Fracture toughness; Repairability; DELAMINATION RESISTANCE; WEAVE PATTERN; COMPOSITES; PERFORMANCE;
D O I
10.1016/j.compositesb.2024.112023
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
During the life of a composite part, the need of repair due to delamination may arise, especially since the reuse of composites is being promoted as a sustainable management solution for composite waste. For thermoset composite parts, which are commonly used for wind-energy blades' manufacturing, the repair process can be costly and long as the damaged area needs to be removed and replaced. In the present work, a siloxane-based-vitrimer composite that provides the advantage of healing by hot-pressing for only 40 min, was investigated as an alternative to conventional infusible thermoset composites. The quality of the optimised repair cycle was evaluated by optical microscopy and X-ray tomography. The mechanical performance of the vitrimer composite was investigated under Mode I and Mode II fracture by measuring the respective toughness prior and after repair in comparison to an industrial thermoset benchmark. The results demonstrated that the vitrimer composite exhibits fracture toughness values that are comparable to the benchmark, while reaching >89 % repair efficiency restoring its GIC and GIIC and making it a viable alternative to thermoset structural composites. The above results represent a breakthrough in the design of future sustainable composites based on epoxy and infusible systems for wind-energy applications.
引用
收藏
页数:14
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