What Is an Epoxy Adhesive? When considering the effectiveness of an epoxy adhesive, it is useful to analyze the general formulation of the compounds that constitute it. Epoxies are created by polymerizing a mixture of two starting compounds, the resin and the hardener.
Urea Formaldehyde glue; Polyurethane Adhesives. First, polyurethane, PU for short or sometimes PUR, is not a single material with a fixed composition. Rather it is a range of chemicals sharing similar chemistry. It is a polymer composed of units of organic chains joined by urethane or carbamate links.
Cyanoacrylate glue is the industrial name for what is commonly known as “Crazy Glue” or “Super Glue”. In fact, the term cyanoacrylate glue generally describes quick-bonding super glues. They can be used to combine anything from metal to plastic and even human skin.
Aliphatic resin emulsion, commonly referred to as "yellow glue" or "carpenter's glue", has a similar use profile and relative ultimate strength as PVA. The two glues differ in grip characteristics before initial set, with PVAs exhibiting more slip during assembly and yellow glue having more initial grip. Brands include Titebond and Lepage.