cianoacrilat

Cyanoacrylate is a family of strong, fast-acting adhesives commonly known by brand names such as Super Glue or Loctite. These adhesives work by an anionic polymerization process that is initiated by weak bases, such as moisture present on the surfaces being bonded. When a thin layer of cyanoacrylate is applied between two surfaces, the moisture on those surfaces initiates the rapid hardening of the liquid monomer into a solid polymer. This polymerization occurs very quickly, often within seconds, leading to the characteristic fast bonding time of these glues.

Cyanoacrylates are typically clear liquids with a relatively low viscosity, allowing them to penetrate small gaps and cracks. They form strong bonds with a wide variety of materials, including plastics, rubber, metals, ceramics, and wood. However, they can bond skin very rapidly, which is why caution is advised during application. Special removers are available to dissolve the polymerized cyanoacrylate if accidental bonding occurs. The chemical structure of cyanoacrylate features a vinyl group and a cyano group attached to the same carbon atom, which is key to its rapid polymerization. Different formulations exist, varying in viscosity, cure speed, and flexibility of the final bond, catering to specific industrial and consumer applications.