Vinyl ester

Vinyl ester

Vinyl Ester, or Vinylester, is a resin produced by the esterification of an epoxy resin with an unsaturated monocarboxylic acid. The reaction product is then dissolved in a reactive solvent, such as styrene, to a 35 - 45 percent content by weight.

It can be used as an alternative to polyester and epoxy materials in matrix or composite materials, where its characteristics and strengths are superior to that of polyester, however inferior to epoxy. Vinyl ester has low resin viscosity(approx 200 cps), than polyester(approx 500cps) and epoxy(approx 900cps)

In homebuilt airplanes, the Glasair and Glastar kit planes made extensive use of vinylester-reinforced fiberglass structures. It is a common resin in the marine industry due to its increased corrosion resistance and ability to withstand water absorption.

Sources

* ResinNavigator.org's [http://www.resinnavigator.com/html/benefits.htm Epoxy-based vinyl esters benefits]

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