Self-healing composites are advanced materials that can autonomously repair damage such as cracks and fissures to extend their service life without human intervention.
Traditional composites and materials require maintenance or replacement after damage occurs, leading to increased costs and downtime. Self-healing composites reduce these issues by extending service life and minimizing repair needs.
These composites contain microcapsules or vascular networks filled with a healing agent. Upon crack formation, the capsules rupture, releasing the agent into the crack where it reacts to form a new material, effectively sealing the damage. Alternatively, reversible bonds within the composite can re-form when heated, closing the gap.
Manufacturing self-healing composites involves embedding microcapsules or vascular networks into the polymer matrix during fabrication. This can be done through various techniques such as in-situ polymerization, coating, or impregnation.
The process typically starts with selecting a suitable base material and then incorporating healing agents or structures. The materials are then processed using standard manufacturing methods like molding, extrusion, or lamination.
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