Epoxy Vinyl Ester Resin Structure

The two main types of epoxy resins are bisphenol a diglycidyl ether dgeba and epoxy phenol novolac epn.

Epoxy vinyl ester resin structure.

The molecular structure of vinyl ester resins is similar to that of polyesters but differs primarily on the location of their reactive groups which are positioned only at the ends of the chains. Epoxy vinyl ester resins ver are an important class of high performance thermoset molding resins. While they have high mechanical strength values similar to epoxy resins they are easy to apply similar to unsaturated polyester resins. They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins.

The vinyl groups refer to these ester substituents which are prone to polymerize. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. These resins form durable laminates and. Vinyl ester resin or often just vinyl ester is a resin produced by the esterification of an epoxy resin with acrylic or methacrylic acids.

Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid. Vinyl ester ve resins are thermosetting polymers that combine the good chemical mechanical and thermal properties of epoxy resins with the rapid cure of unsaturated polyester resins ve resins have high chemical and hydrolytic resistances good toughness a high modulus and good thermal and electrical insulation properties. Bisphenol a based epoxy vinyl ester resins provide high chemical resistance and mechanical strength. Ve resins are a combination of both polyester resin and epoxy resins best properties.