Vinyl Ester Or Epoxy

It adds excellent strength rigidity adhesion water and chemical resistance.

Vinyl ester or epoxy.

Regarding costs vinyl ester resin is more expensive than polyester resin but cheaper than epoxy resin. Vinylester is essentially a styrene modified epoxy resin. They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins. Epoxy vinyl ester resins ver are an important class of high performance thermoset molding resins.

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. Epoxies polyesters and vinylesters represent two resin families. 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. Polyester is small chain carbon whereas vinylester is long chain carbon which makes it more flexible. These coatings typically exceed both polyester and epoxy in corrosion resistance temperature resistance and elongation toughness. Vinyl ester resins are typically formulated from styrene and a condensation product of methacrylic acid with an epoxy.

These resins form durable laminates and coatings. 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. The vinyl groups refer to these ester substituents which are prone to polymerize.

The curing process is radical initiated. Epoxy adheres to wood much better than polyester does. 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.

You can put epoxy over polyester but not the other way. Vinyl ester can be used for concrete and steel tank linings or as a concrete floor topping. The hardener catalyst for vinyl ester resin and polyester resins is mekp. Vinyl esters also use peroxides e g.

Vinyl is similar to polyester. Polyester will not stick to epoxy but vinylester will.