Repeated self-healing of microvascular carbon fibre reinforced polymer composites

被引：34

作者：

Coope, T. S. ^{[1
]}

Wass, D. F. ^{[2
]}

Trask, R. S. ^{[1
]}

Bond, I. P. ^{[1
]}

机构：

[1] Univ Bristol, Dept Aerosp Engn, Adv Composites Ctr Innovat & Sci, Bristol BS8 1TR, Avon, England

[2] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

来源：

SMART MATERIALS AND STRUCTURES | 2014年 / 23卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

self-healing; fibre-reinforced; bio-inspired; triflate; repeated healing; DAMAGE; EMAA;

D O I：

10.1088/0964-1726/23/11/115002

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A self-healing, high performance, carbon fibre reinforced polymer (CFRP) composite is demonstrated by embedding a Lewis-acid catalytic curing agent within a laminate, manufactured using out of autoclave (OOA) composite manufacturing methods. Two configurations of healing agent delivery, pre-mixed and autonomous mixing, are investigated via injection of a healing agent through bio-inspired microvascular channels exposed on Mode I fractured crack planes. Healing is effected when an epoxy resin-solvent healing agent mixture reaches the boundary of embedded solid-state scandium(III) triflate (Sc(OTf)(3)) catalyst, located on the crack plane, to initiate the ring-opening polymerisation (ROP) of epoxides. Tailored self-healing agents confer high healing efficiency values after multiple healing cycles (69-108%) to successfully mitigate against crack propagation within the composite microstructure.

引用

页数：16

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