Epoxy overview and basic classification
All resins containing two or more epoxy groups in the molecular structure are collectively referred to as epoxy resins. Epoxy groups are rings composed of one oxygen atom and two carbon atoms and are highly active. Epoxy resins are linear or branched low-molecular polymers with epoxy groups at both ends of the molecule and aryl, alkyl, hydroxyl, and ether linkages in the main chain of the molecule. Epoxy groups and hydroxyl groups can react with functional groups and can provide good connectivity. The ether bond can provide good chemical resistance, the aryl group can provide good high temperature resistance and rigidity, and the methyl group can provide good flexibility. Epoxy resins can be cured with aliphatic polyamines or polyamides at room temperature. It can be cured with acid anhydrides, hydroxy carboxyls, aromatic amines, phenolic resins or amino resins at high temperatures. Cured epoxy resin has good physical and chemical properties, because it is widely used in coatings, inks, adhesives, casting, impregnation, laminates and other industries. What are the types of epoxy resin? Generally, we classify by chemical composition and can be divided into glycidols and non-glycidols. Glycidol can be divided into glycidyl ether, glycidyl ester and glycidylamine. Non-glycidyls include olefinic epoxy resins and cycloolefin epoxy resins. According to the types of coatings formulated, they can be divided into solvent-based epoxy resins, waterborne epoxy resins, and epoxy resins for powder coatings. The commonly used epoxy materials are mainly divided into: bisphenol A epoxy resin, bisphenol F epoxy resin, novolac epoxy resin, elemental modified epoxy resin, epoxy ester resin, polyol epoxy resin , Cycloaliphatic epoxy resin, polyolefin epoxy resin, etc., various specifications of epoxy resin can be used to meet the various needs of different users. Want to learn more about buttons: accessible For more details, please pay attention to WeChat public number: NANTONG MASTERPIECE TRADE CO.,LTD , https://www.yuaccessory.com