Difference Between Polyester And Vinylester Resin

Because of their chemical structure vinyl esters and epoxies offer higher mechanical strength adhesion and heat resistance over polyester resins.

Difference between polyester and vinylester resin.

See all epoxy resin products. Ortho polyester isothalic polyester and vinylester resins are compatible they all have styrene commonly known as the fiberglass smell and chemically bond to one another. Key differences between epoxies and resins. Polyester resins are standard resin for composite construction.

But there are several key differences between epoxies and resins. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. Our 300 21 and 400 21 epoxy resins have a flexural strength of 17 500 psi. Here s a quick breakdown on the differences between epoxy resin and polyester resin.

Differences between resins there are three main types of resins used for composite materials. Epoxy is known for its higher bonding capabilities overall. When higher strength bond and water resistance is required such as keel rudder repair or out board transom replacement use lbi s 302 isothalic polyester resin. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid.

Vinyl esters also use peroxides e g. An epoxy s relative strength can hold up to 2 000 lbs.