Detail

A self-introduction from vinyl ester resin

Time：2022-08-31source：Taizhou Longyu Chemical Co., Ltd

Vinyl ester resin is prepared by the chemical reaction of epoxy resin and methacrylic acid through ring-opening addition. It retains the basic segment of epoxy resin, and has the good process performance of unsaturated polyester resin. After curing under suitable conditions, it shows some special excellent properties. Therefore, since the 1960s, it has developed rapidly. The Epocrgl brand was first launched by Shell Chemical in the United States, and then the Derakane brand was launched by Dow Chemical in the United States in 1966, followed by the Hetron brand of Ashland Chemical. , as well as the Ripoxy brand of Japan's Showa High Polymer Co., Ltd., other foreign brands or manufacturers include AOC, Interplastics, etc., and China also develops its own vinyl ester resins, such as Huachang MFE, SWANCOR, etc. With the development of vinyl resin, there are more and more enterprises producing vinyl ester resin, so there are various brands and types in the domestic and foreign markets. 3. Product types Due to the different resin synthesis processes and methods, the structure, performance and application of vinyl resins will be slightly different. 3.1. Standard bisphenol A epoxy vinyl ester resin Standard bisphenol A epoxy vinyl resin is a vinyl resin synthesized by the reaction of methacrylic acid and bisphenol A epoxy resin, and is easily soluble in styrene solution. This type of resin has the following characteristics: The double bonds at both ends of the molecular chain are extremely active, so that the vinyl resin can be cured quickly, and the strength of use can be obtained quickly, resulting in a polymer with high corrosion resistance; it is synthesized by methacrylic acid, and the ester bond edge is Methyl can play a protective role and improve hydrolysis resistance; the resin contains less ester bonds, and each mole is 35-50% less than chemical-resistant polyester (bisphenol A-fumaric acid UPR), which improves alkali resistance; Multiple secondary hydroxyl groups can improve the wettability and adhesion of glass fibers, and improve the mechanical strength of laminates; since only cross-linking at both ends of the molecule, the molecular chain can be elongated under the action of stress to absorb external force or Thermal shock, exhibits resistance to microcracking or cracking.