The hydroxyl value of epoxy floor paint refers to the amount of hydroxyl contained in 100g epoxy resin. The hydroxyl equivalent refers to the quality of epoxy resin containing hydroxyl groups. There are two methods for the determination of hydroxyl group: one is to directly determine the hydroxyl content in the epoxy resin, the other is to open the epoxy group to form the hydroxyl group, and to further determine the sum of hydroxyl content. The former method is based on the principle of fast and quantitative reaction of lithium aluminum hydride and hydrogen containing active hydrogen. The latter method with acetic anhydride and pyridine and concentrated sulfuric acid mixed after acetylation reagent and epoxy resin reaction, the formation of hydroxyl groups, then the determination of hydroxyl content of total, with epoxy two times reduction, then the determination of hydroxyl content of epoxy resin in the hydroxyl value. The content of hydroxyl and ester in epoxy floor paint
Epoxy floor paint esterification equivalent: esterification equivalent refers to the quality of epoxy resin. Hydroxyl groups and epoxy groups in epoxy resin can react with carboxylic acids. The ester equivalent can be used to express the total content of hydroxyl and epoxy groups in the resin. The content of hydroxyl and ester in epoxy floor paint
The content of hydroxyl and ester in epoxy floor paint