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Henghua Jin, Chris L. Mangun, Anthony S. Griffin, Jeffrey S. Moore, Nancy R. Sottos and Scott R. White Thermally Stable Autonomic Healing in Epoxy using a Dual-Microcapsule System Advanced Materials 26

Article first published online: 18 SEP 2013 | DOI: 10.1002/adma.201303179

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Self-healing is achieved with a dual-microcapsule system utilizing epoxy-amine chemistry in a high temperature cured thermosetting epoxy polymer. One capsule contains a modified aliphatic polyamine prepared by vacuum infiltration of polyoxypropylenetriamine into hollow polymeric microcapsules. The second capsule contains a difunctional epoxide and reactive diluent. Healing efficiency is accessed through recovery of fracture toughness and excellent long-term stability at ambient conditions is demonstrated.

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