A review of vascular networks for self-healing applications

被引:51
作者
Shields, Yasmina [1 ]
De Belie, Nele [1 ]
Jefferson, Anthony [2 ]
Van Tittelboom, Kim [1 ]
机构
[1] Univ Ghent, Dept Struct Engn & Bldg Mat, Magnel Vandepitte Lab, Fac Engn & Architecture, Technol Pk Zwijnaarde 60, B-9052 Ghent, Belgium
[2] Cardiff Univ, Cardiff Sch Engn, Cardiff CF24 3AA, Wales
基金
欧盟地平线“2020”;
关键词
self-healing; vascular networks; biomimetic; FIBER-REINFORCED POLYMER; NANOFIBER-BASED COMPOSITES; CORE-SHELL NANOFIBERS; CEMENTITIOUS MATERIALS; POLYCAPROLACTONE SCAFFOLDS; HOLLOW FIBERS; TENSILE; DAMAGE; FABRICATION; ADHESIVE;
D O I
10.1088/1361-665X/abf41d
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Increasing awareness for sustainability has led to the development of smart self-healing materials, which can extend the service life and improve safety without human intervention. Vascular networks are observed in biological systems, such as leaf venation and blood vascular systems, and provide inspiration for self-healing mechanisms in engineered systems. Embedding a vascular network in a host material has the advantage of addressing varying magnitudes of damage and allowing for an indefinite replenishment of the healing agent, which are current limitations of intrinsic and capsule-based self-healing systems. These networks are demonstrated in polymer and composite materials, with fabrication methods including removal of sacrificial elements, electrospinning, and an array of additive manufacturing (AM) techniques. Advances in AM allow more complex network configurations to be realized that optimize fluid distribution and healing potential. This review intends to provide a comprehensive overview of the current progress and limitations of the design approaches, fabrication methods, healing mechanisms, and relevant applications of embedded vascular networks. Additionally, significant research gaps and future research directions for vascular self-healing materials are described.
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页数:22
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