Vinyl Ester Resin Chemical Resistance
Definition - What does Vinyl Ester Resin Chemical Resistance mean?
Vinyl ester resin chemical resistance is the ability of vinyl ester resins to deter chemical attack under normal or elevated temperatures. These resins feature an ester functional group (R-CO2-R’) with an unsaturated hydrocarbon side chain, such as a C=C double bond.
The combination of those properties yield stronger materials than polyesters and provide improved resistance to thermal shock and resistance to solvents, acids and specific oxidants. As such, some formulations of vinyl ester resins are resistant to chemically induced corrosion and therefore can make good corrosion resistant coatings.
Corrosionpedia explains Vinyl Ester Resin Chemical Resistance
Vinyl ester resins are produced from the attack of an epoxy resin with an unsaturated carboxylic acid. The specific choice of an appropriate epoxy resin and carboxylic acid will determine the chemical resistance properties of the resultant vinyl ester resin. Suppliers provide information about the specific benefits of each vinyl ester resin product so the correct resin can be selected for a particular application. Each chemical type is associated with a maximum temperature at which the resin remains resistant to the chemical. Many of these chemicals may also be able to corrode metals.
The notable chemical resistance advantages of vinyl ester resins include:
- High resistance to chlorinated solvents
- Resistance to acids
- Resistance to halogenated organic substances
- Resistance to various caustics
- Resistance to solvents
- Chemical resistance at high temperatures
The curing process of vinyl ester resins may require from one day to a week to gain maximum resistance properties.