Explanation

polymerization in which monomer dissolved with initiator is dispersed into small droplets in water as a medium. Features: ① The system is relatively simple, and the product is particularly suitable for preparing transparent products with pure purity; ② Due to the large specific surface of the droplets and the large specific heat [capacity of water, the heat transfer and temperature control are better than those of bulk polymerization, and the properties of the products obtained are also improved. After polymerization, the product becomes bead like, so it is also called bead like or pearl aggregation. polymerization is generally carried out in polymerization kettle with stirring. This method can only be used where the glass transition temperature of the product is higher than the polymerization temperature. In addition, monomer or copolymerized monomer should be insoluble in water, so that the product can maintain a regular shape and certain composition, and make the product performance stable.

Classification