Vinyl Ester Chemistry

Vinyl ester oligomers diluted with styrene are important matrix resins for thermosetting polymer composites.

Vinyl ester chemistry. 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 esters also use peroxides e g. An industrially important example is vinyl chloride precursor to pvc a plastic. The lining is formulated from novolac vinyl ester resin inerts fillers and fibreglass reinforcement it is a chemical resistant lining for most dilute inorganic acids and come concentrated.

Essentially they comprise a base of polyester resin strengthened with epoxy molecules in the backbone of the molecular chain. Ceilcote 652 lining is a trowel applied heavy duty lining that protects steel and concrete in immersion service from strong chemicals. The vinyl groups refer to these ester substituents which are prone to polymerize. In chemistry vinyl or ethenyl abbreviated as vi is the functional group with the formula c h ch 2 it is the ethylene iupac ethene molecule h 2 c ch 2 with one fewer hydrogen atom.

It has a measured glass transition temperature t g of 110 c hence allowing the clamp to withstand up to a maximum service temperature of 80 c. Vinyl ester resin is selected due to its well known performance in marine conditions and good chemical resistance to a wide range of chemicals including sour crude up to 100 c. A major objective of this work has been to study the chemistry and kinetics of the cure reactions of vinyl ester resins at elevated curing temperatures which are consistent with typical composite processing conditions.