ROMP Healing Agent Development for Self-Healing Materials

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Presentation transcript:

ROMP Healing Agent Development for Self-Healing Materials Michael Kessler Department of Materials Science and Engineering Iowa State University 2220 Hoover Hall Ames, IA 50011, USA Self-healing polymers incorporate liquid healing agent-filled microcapsules and catalyst particles into a polymer matrix. Upon material fracture, microcapsules rupture, followed by flow of the liquid healing agent into the crack volume. When the healing agent contacts the catalyst particles it polymerizes and adheres the crack faces together. Early work in the field of self-healing has only utilized a few healing agent/catalyst combinations with minimal optimization. We have expanded on this initial work by developing new healing agents, which were tested using a modified rheokinetic technique designed to mimic the self-healing mechanism (below left). Healing agents with a variety of different healing kinetics and thermomechanical properties were discovered (below right).