Polyacrylamide is abbreviated as PAM. It is a linear polymer and one of the most widely used water-soluble polymer compounds. Polyacrylamide and its derivatives are used as effective flocculants, thickeners, paper Strengthening agent and liquid drag reducing agent, etc., are widely used in water treatment, papermaking, petroleum, coal, mining and metallurgy, geology, textile, construction and other industrial sectors. It has good flocculation, can reduce the frictional resistance between liquids, and can be divided into anions, cations and non-ions according to ionic properties.