Epoxy Vs Vinyl Ester Resin

They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins.

Epoxy vs vinyl ester resin.

Vinyl ester resin cures with a tack. Vinylester resins utilize a polyester resin type of cross linking molecules in the bonding process. Epoxy adheres to wood much better than polyester does. Polyester resins published on june 5 2018 june 5 2018 13 likes 0 comments.

In addition they do not adhere well to either the carbon fiber or kevlar materials. It adds excellent strength rigidity adhesion water and chemical resistance. Vinylester is essentially a styrene modified epoxy resin. In homebuilt airplanes the glasair and glastar kit planes made extensive use of vinylester fiberglass reinforced structures.

Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid. It is water resistant. Vinyl esters also use peroxides e g. Choosing the appropriate resin epoxy vs.

Epoxy resin is an ideal resin for high performance and light weight parts. To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz. Epoxy does not emit vocs. It can withstand repeated bending better than both polyester and epoxy resin.

Vinylester is most often used with fiberglass but is also applied to carbon fiber as an outer cosmetic coating. Vinylester resins are stronger than polyester resins and cheaper than epoxy resins. Vinylester resins utilize a polyester resin type of cross linking molecules in the bonding process. Vinyl ester has lower resin viscosity approx 200 cps than polyester approx 500cps and epoxy approx 900cps.

These resins form durable laminates and coatings when fully cured cross linked. Epoxy vinyl ester resins ver are an important class of high performance thermoset molding resins. The two main types of epoxy resins are bisphenol a diglycidyl ether dgeba and epoxy phenol novolac epn. However they are primarily used as an aesthetic application to these products.

The vinylester resins are only about 1 3rd as strong as the epoxy. Epoxy however is much easier to work with and is much more forgiving. Regarding costs vinyl ester resin is more expensive than polyester resin but cheaper than epoxy resin. Ve resin is a tougher resin because of its longer molecular chains.

In conclusion both epoxy and vinylester are much preferred to polyester. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain.