Vinyl Ester Or Epoxy

Epoxy s base is amine which is a different family altogether.

Vinyl ester or epoxy.

Jimslade sep 7 2005 3 joined. These coatings typically exceed both polyester and epoxy in corrosion resistance temperature resistance and elongation toughness. The vinyl groups refer to these ester substituents which are prone to polymerize. This condensation product acts as a crosslinking agent and to improve adhesion to glass fibers.

Epoxies belong to a family of resins which are epoxy functional which means they can be cured with amine curing agents at room temperatures to form excellent adhesives and composite resins. Vinyl is similar to polyester. Regarding costs vinyl ester resin is more expensive than polyester resin but cheaper than epoxy resin. Epoxy adheres to wood much better than polyester does.

Vinyl ester can be used for concrete and steel tank linings or as a concrete floor topping. These resins form durable laminates and coatings. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. The hardener catalyst for vinyl ester resin and polyester resins is mekp.

The curing process is radical initiated. Polyester is small chain carbon whereas vinylester is long chain carbon which makes it more flexible. Vinylester is essentially a styrene modified epoxy resin. Resins are bisphenol a diglycidyl ether dgeba and epoxy phenol novolac epn.

Epoxies polyesters and vinylesters represent two resin families. Vinyl ester resins are typically formulated from styrene and a condensation product of methacrylic acid with an epoxy. It adds excellent strength rigidity adhesion water and chemical resistance. Vinyl esters also use peroxides e g.

You can put epoxy over polyester but not the other way. They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins. 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.

To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz. Epoxy vinyl ester resins ver are an important class of high performance thermoset molding resins.