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Curing accelerator refers to a substance that can accelerate the curing reaction or reduce the curing temperature. In the curing process of synthesizing polymer materials such as epoxy and adhesives, there are often problems such as slow curing rate, low curing degree, or difficulty in heating and curing due to the limitations of curing conditions. In many cases, in order to shorten the curing reaction time or reduce the curing reaction temperature, it is necessary to add appropriate curing accelerators. The addition of accelerators can play a catalytic role, and their decomposition products can reduce the activation energy of the curing agent, thereby lowering the reaction temperature and shortening the reaction time. In addition, curing accelerators can also improve the heat resistance, flame retardancy, and water resistance of cured products.

There are many types of curing accelerators, and theoretically, substances with surface activity can be used as curing accelerators. Common curing accelerators include tertiary amines and their derivatives, quaternary ammonium salts, quaternary phosphonium salts, crown ethers, imidazole and its derivatives, etc. Among them, quaternary ammonium salts and quaternary phosphonium salts are very effective curing accelerators for epoxy and anhydride systems, such as tetrabutyl ammonium bromide and tetraethyl ammonium bromide, which can be effectively applied in the production process of polyester resin and epoxy resin powder coatings. Crown ethers have comprehensive good surface activity, reaction inertness, and transfer rate, which can accelerate the absorption of water in the air by the solution of cyanoacrylate adhesives, thereby promoting monomer polymerization and curing. In the current synthesis process of polymer materials, curing accelerators are widely used.

Ahsuperchem has specialized in manufacturing Quaternary ammonium compounds for many years, any interests, please feel free to contact us.