Vinyl Ester Resin Vs Epoxy

Polyester resins published on june 5 2018 june 5 2018 13 likes 0 comments.

Vinyl ester resin vs epoxy.

This is oversimplified but it does help convey the qualities of the resin. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid. Epoxy adheres to wood much better than polyester does. Vinyl esters also use peroxides e g.

It adds excellent strength rigidity adhesion water and chemical resistance. Vinyl ester resins are often considered a cross between polyester resins and epoxy resins. The hardener catalyst for vinyl ester resin and polyester resins is mekp. Epoxy resin is known in the marine industry for its incredible toughness and bonding strength.

For vinylester resins and even less for polyesters. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. Like polyester resins they require mekp as a catalyst to cure or harden. Cloth and polyester resin.

Vinylester is essentially a styrene modified epoxy resin. Choosing the appropriate resin epoxy vs. Quality epoxy resins stick to other materials with 2 000 p s i. Vinyl ester falls between polyester and epoxy on price most physical properties and handling qualities.

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. To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz. However they are primarily used as an aesthetic application to these products.

Specifically proper cure of vinyl ester resins and a 15 year study of the effective use of permeation barriers in marine composites to prevent corrosion and blistering. Polyesters and vinylesters belong to another family of resins containing an unsaturated polyester or hybridized vinylester backbone which is catalyzed with. Vinylester is most often used with fiberglass but is also applied to carbon fiber as an outer cosmetic coating. Using epoxy you can improve the laminate properties with a post cure almost always.