Full recovery of fracture toughness using a nontoxic solvent-based self-healing system

被引：222

作者：

Caruso, Mary M. ^{[1
,2
]}

Blaiszik, Benjamin J. ^{[2
,3
]}

White, Scott R. ^{[2
,4
]}

Sottos, Nancy R. ^{[2
,5
]}

Moore, Jeffrey S. ^{[1
,2
]}

机构：

[1] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

[2] Univ Illinois, Beckman Inst, Urbana, IL 61801 USA

[3] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA

[4] Univ Illinois, Dept Aerosp Engn, Urbana, IL 61801 USA

[5] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2008年 / 18卷 / 13期

关键词：

D O I：

10.1002/adfm.200800300

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two significant advances are reported for solvent-based self-healing of epoxy materials. First, an autonomic system yielding complete recovery of fracture toughness after crack propagation was achieved by embedding microcapsules containing a mixture of epoxy monomer and solvent into an epoxy matrix. Healing with epoxy-solvent microcapsules is superior to capsules that contain solvent alone, and multiple healing events are reported for this system. Second, efficient healing is reported for new solvents, including aromatic esters, which are significantly less toxic than the previously employed solvent, chlorobenzene. Preliminary aging studies using either chlorobenzene or ethyl phenylacetate as the solvent demonstrate the stability of the epoxy-solvent system under ambient conditions for at least one month.

引用

页码：1898 / 1904

页数：7

共 31 条

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