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The superglue has been successfully made into beads by mixing the superglue with acid. Producing a shell coating on the beads by adding a base to the acid-superglue mix at which time the outer surface of the bead cures while the inner portion remains as liquid glue. At a too basic pH the entire bead cures, and at a too acidic pH no shell forms. The technology is uses ph to set up a shell of superglue and try to quench the reaction so the center of the bead remains liquid and reactive.
In "Self Repair of Concrete Bridges and Infrastructure" two chemicals were used due to different placements in bridges to repair different types of cracks- surface shrinkage and shear cracks, In "Airplane Wings and Fuselage, in Graphite" the composite has very different properties than the concrete bridges. In the graphite for airplane components the chemical also had to survive the high processing temperatures. In this composite the cracks were so definite and deep and thin that the repair chemical could flow easily and repair in all layers of the composite. In "Ceramic/Composite Demonstrating Self Repair" the self repair system not only repaired the broken ceramic but also rebounded the composite to the ceramic layer
Adhesive liquid core optical fibers for crack detection and repairs in polymer and concrete matrices
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