Cyanoacrylate adhesives, also known as ‘‘superglues", are single component liquids that have fast cure, and excellent shear strength. Although very similar in curing characteristics to the anaerobic adhesives, cyanoacrylates are much more rigid and less resistant to moisture. This class of adhesives is available only as low-viscose liquids that cure in seconds at room temperature and bond well to many substrates.
Like many one-part urethanes, they require moisture to initiate polymerization and cure only in thin bondlines. Cyanoacrylates normally have poor heat and moisture resistance and have relative low peel and impact strengths, also newer developemnts resulted in adhesives that exibit some toughness. Cyanoacrylates are usually used where there is minimal environmental stress and fast setting times are required.
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