Epoxy resins were first introduced to the world in 1946 at the Swiss Industries Fair The importance of these materials and their widespread use today is due in large part to their excellent adhesive and thermal-mechanical properties, as well as their ease of processing. Once
fully cured, epoxies form highly crosslinked, three-dimensional networks The densely crosslinked nature of the material is what enables many of its superior properties. It is therefore no surprise that the mechanical properties of an epoxy are often linked directly to its crosslink density As such, changes in crosslink density invariably lead to changes in ultimate properties