Epoxy Vs Vinyl Ester Resin

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

Epoxy vs vinyl ester resin.

These resins form durable laminates and coatings when fully cured cross linked. The vinylester resins are only about 1 3rd as strong as the epoxy. In addition they do not adhere well to either the carbon fiber or kevlar materials. Regarding costs vinyl ester resin is more expensive than polyester resin but cheaper than epoxy resin.

Structurally epoxy and vinylester are close in properties. Vinyl esters also use peroxides e g. Vinylester is essentially a styrene modified epoxy resin. Polyester resins published on june 5 2018 june 5 2018 13 likes 0 comments.

They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins. In homebuilt airplanes the glasair and glastar kit planes made extensive use of vinylester fiberglass reinforced structures. Vinylester is most often used with fiberglass but is also applied to carbon fiber as an outer cosmetic coating. Choosing the appropriate resin epoxy vs.

Ve resin is a tougher resin because of its longer molecular chains. Vinylester resins utilize a polyester resin type of cross linking molecules in the bonding process. Epoxy adheres to wood much better than polyester does. Epoxy however is much easier to work with and is much more forgiving.

However they are primarily used as an aesthetic application to these products. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. It adds excellent strength rigidity adhesion water and chemical resistance. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid.

It can withstand repeated bending better than both polyester and epoxy resin. Vinylester resins are stronger than polyester resins and cheaper than epoxy resins. In conclusion both epoxy and vinylester are much preferred to polyester. It is water resistant.

Epoxy resin is an ideal resin for high performance and light weight parts. Vinyl ester resin cures with a tack. 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.

The hardener catalyst for vinyl ester resin and polyester resins is mekp. To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz.