Vinyl Ester Resin Properties

Vinyl ester resin or often just vinyl ester is a resin produced by the esterification of an epoxy resin with acrylic or methacrylic acids.

Vinyl ester resin properties. Vinyl esters also use peroxides e g. The shrinkage of vinyl ester resins during cure was calculated according to density measurements to be 4 10 depending on styrene content. Ve resins are a combination of both polyester resin and epoxy resins best properties. The diester product is then dissolved in a reactive solvent such as styrene to approximately 35 45 percent content by weight.

Vinyl esters are halfway between polyesters and epoxies as far as typical properties and toughness and they are a step up on a cost basis. Their longer double bonded vinyl groups that link the ester groups together contribute a flexible nature to the resin. Vinyl esters have enhanced mechanical properties compared to polyesters with physical strength better impact and thermal shock resistance. Vinyl ester resins are the binary resin systems containing a dimethacrylate monomer from which the cured material gains most of its properties and a reactive monomer such as styrene which acts as a reactive diluent and also takes part in the cross linking reaction.

Bisphenol a based epoxy vinyl ester resins provide high chemical resistance and mechanical strength. While they have high mechanical strength values similar to epoxy resins they are easy to apply similar to unsaturated polyester resins. The majority of commercial vinyl polyester resins are derived from bisphenol a diglycidyl ether dgeba as the epoxy component and acrylic or methacrylic acid as the vinyl monomer in the polymer. Many other epoxies and vinyl acids or esters can be used to taylor the properties of unsaturated polyesters.

For vinyl ester resins with longer lengths mn 1000 g mol crosslinked networks have higher. Vinyl ester or vinylester is a resin produced by the esterification of epoxy resin with unsaturated monocarboxylic acid. Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. The vinyl groups refer to these ester substituents which are prone to polymerize.

Vinyl ester resin is considered to be a hybrid of polyester and epoxy resins meaning its handling characteristics properties and even price generally fall just between the two. Vinyl ester resins are produced by the reaction esterification between an epoxy resin and an unsaturated monocarboxylic acid. Vinyl ester is formulated for maximum corrosion resistance to most fuels vapors and chemicals. It was found that the chain length of vinyl ester oligomers strongly affects the properties of the networks.

It s heat resistant and blended for durability.