Effect of Chemical Structure of Epoxy Resin on Mechanical Properties of Cured Resin and its Composite

Epoxy resins are widely used in fiber reinforced composites. These reins have different chemical structures such as aliphatic, aromatic and cycloaliphatic. Since the chemical structure of epoxy resin is one of the most important factors on mechanical properties of resin and its composite, in this paper two kind of epoxy matrices including MPD/DICY/EPONE ۸۲۸ and MPD/DICY/TDE-۸۵ were used and the effect of aromatic (EPONE ۸۲۸) and cycloaliphatic (TDE-۸۵) chemical structure of resin on cured epoxy mechanical properties and Inter laminar shear strength (ILSS) of fiberglass /epoxy composite was investigated. The mechanical properties were studied by tensile and ILSS test and the result showed that the chemical structure of epoxy resin has a significant influence on mechanical properties. Inter laminar shear strength for EPONE ۸۲۸ and TDE-۸۵ was ۷۷.۴۲ and ۵۸.۵۶ Mpa respectively, which represents ۲۴% increase in inter laminar shear strength.

کلیدواژه ها:

epoxy composite ، chemical structure ، mechanical properties ، Inter laminar shear strength