Is epoxy an ester?

Epoxy plasticisers are esters containing an epoxy group such as epoxidised soybean oil (ESBO) or epoxidised linseed oil (ELO). They are formed by the epoxidation of an olefinic double bond to an oxirane structure.

What is the difference between polyester and vinyl ester resin?

The key difference between vinyl ester and polyester resin is that vinyl ester resins have a low resin viscosity, whereas polyester resin has a high resin viscosity. There are many important applications of vinyl ester resins and polyester resins.

Is vinyl ester a polyester resin?

Vinyl ester resins are produced by the reaction (‘esterification’) between an epoxy resin and an unsaturated monocarboxylic acid. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. Vinyl esters also use peroxides (e.g. MEKP) for hardening.

Is vinyl ester and epoxy?

Vinyl ester resin, or often just vinyl ester, is a resin produced by the esterification of an epoxy resin with acrylic or methacrylic acids. The “vinyl” groups refer to these ester substituents, which are prone to polymerize and thus an inhibitor is usually added.

Is epoxy a plasticizer?

Epoxidized oils generally have good resistance to extrusion and migration and low volatility, but they cannot be used as sole plasticizers in unfilled vinyl compounds and hence are not considered to be primary plasticizers.

What is the difference between epoxy resin and vinyl ester resin?

Vinylesters are more expensive than Polyesters. CRD Epoxy resins are much more suited to extremely strenuous tasks such as enduring vibrational loads, are more water resistant and environmentally stable than either Vinylester or Polyester resins, whilst providing higher tensile strength and thermal stability.

What is vinyl ester resin used for?

Vinyl ester resins are used for demanding applications, including corrosion-resistant industrial tanks & pipes and pultruded profiles. Additionally, vinyl esters are often used in critical components for automotive and marine vehicles.

Which resin is best for boat building?

Polyester resin
Polyester resin is excellent for fiberglass lay-up — building a boat, for example. Polyester laminating resin doesn’t fully cure while exposed to air, so when it is used for lay-up, every application joins to the previous one on a molecular level.