Epoxy Vs Vinyl Ester Resin
These resins form durable laminates and coatings when fully cured cross linked.
Epoxy vs vinyl ester resin. Epoxy resin is an ideal resin for high performance and light weight parts. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. The two main types of epoxy resins are bisphenol a diglycidyl ether dgeba and epoxy phenol novolac epn. They are produced by the addition of α β unsaturated carboxylic acids to epoxy resins.
The hardener catalyst for vinyl ester resin and polyester resins is mekp. In addition they do not adhere well to either the carbon fiber or kevlar materials. Epoxy vinyl ester resins ver are an important class of high performance thermoset molding resins. 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. Vinyl esters also use peroxides e g. Vinylester resins utilize a polyester resin type of cross linking molecules in the bonding process. In conclusion both epoxy and vinylester are much preferred to polyester.
Vinyl ester has lower resin viscosity approx 200 cps than polyester approx 500cps and epoxy approx 900cps. Epoxy adheres to wood much better than polyester does. Polyester resins published on june 5 2018 june 5 2018 13 likes 0 comments. Vinylester resins utilize a polyester resin type of cross linking molecules in the bonding process.
Ve resin is a tougher resin because of its longer molecular chains. To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz. Vinyl ester resin cures with a tack. Vinylester is most often used with fiberglass but is also applied to carbon fiber as an outer cosmetic coating.
Regarding costs vinyl ester resin is more expensive than polyester resin but cheaper than epoxy resin. It adds excellent strength rigidity adhesion water and chemical resistance. It can withstand repeated bending better than both polyester and epoxy resin. Epoxy however is much easier to work with and is much more forgiving.
Vinylester resins are stronger than polyester resins and cheaper than epoxy resins. Choosing the appropriate resin epoxy vs. Cloth and polyester resin. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid.
It is water resistant. Epoxy does not emit vocs.