科研之友
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摘要
Self-healing is receiving increasing interest worldwide as a technology to autonomously address the effects of damage in composite materials. This article relates to a self-healing composite exhibiting high levels of healing efficiency under working conditions typical of aeronautic materials. The self-healing material is composed of a thermosetting epoxy matrix in which a catalyst of Ring Opening Metathesis Polymerization (ROMP) and nanocapsules are dispersed. The nanocapsules contain a monomer able to polymerize via ROMP. Dynamic mechanical analysis was used to determine mechanical parameters. The autorepair composite shows a high modulus in a wide temperature range, a glass transition temperature at about 110 degrees C and a self-healing efficiency of about 97%.
- 出版日期2013-9
