Vinyl Ester Or Epoxy

Epoxy vinyl ester resins ver are an important class of high performance thermoset molding resins.

Vinyl ester or epoxy.

Vinylester is essentially a styrene modified epoxy resin. The vinyl groups refer to these ester substituents which are prone to polymerize. Resins are bisphenol a diglycidyl ether dgeba and epoxy phenol novolac epn. Vinyl ester resin or often just vinyl ester is a resin produced by the esterification of an epoxy resin with acrylic or methacrylic acids.

The hardener catalyst for vinyl ester resin and polyester resins is mekp. They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins. These resins form durable laminates and coatings. Epoxies polyesters and vinylesters represent two resin families.

Jimslade sep 7 2005 3 joined. Vinyl ester resins are typically formulated from styrene and a condensation product of methacrylic acid with an epoxy. To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz. Cloth and polyester resin.

The curing process is radical initiated. These coatings typically exceed both polyester and epoxy in corrosion resistance temperature resistance and elongation toughness. Epoxy adheres to wood much better than polyester does. You can put epoxy over polyester but not the other way.

Vinyl ester resins are a cross between polyester resins and epoxy resins. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid. It adds excellent strength rigidity adhesion water and chemical resistance. Vinyl ester can be used for concrete and steel tank linings or as a concrete floor topping.

Vinyl esters also use peroxides e g. Epoxy s base is amine which is a different family altogether. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. Polyester will not stick to epoxy but vinylester will.

Polyester is small chain carbon whereas vinylester is long chain carbon which makes it more flexible. Vinyl is similar to polyester.