Polyacrylamide, abbreviated as PAM, is a linear polymer which is one of the most widely used varieties of water-soluble polymer compounds. Polyacrylamide and its derivatives can be used as effective flocculants, thickeners, paper enhancers and liquid drag reducers, etc., widely used in water treatment, paper making, petroleum, coal, mining and metallurgy, geology, textile Industrial sectors such as construction. Insoluble in most mailing solvents, it has good flocculation and can reduce the frictional resistance between liquids. According to the ion characteristics, it can be divided into three types: cationic, anionic and nonionic.