Self-healing mterials are synthetically created substances that have the ability to repair themselves and recover functionality after degradation, damage and failure. Today, these materials are used in many fields such as civil engineering, automotive industry, aviation,... However, it is also well known, that through their application, they are experiencing changes in mechanical properties, which have a huge impact on the life-time of the product. In the present work were investigating, how the surface mechanical properties of these materials are changing with the healing cycles. Moreover, the influence of the component of which these materials are made of, was studied too. We were measuring elastic modulus and hardness of nine samples, through three cycles of healing process. One cycle included nanoindentation measurement and data analysis, microscopy and optical imaging and heating. The result shown a decrease of elastic modulus and increase of hardness over the cycles of healing. Moreover, the change of elastic modulus was higher for the samples with less DielsAlder components, while the changes in hardness were higher for the samples with higher amount of Diels-Alder components.
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