PAM polyacrylamide is a water-soluble linear polymer polymerized by free radical initiation of acrylamide (AM) monomer. It has good flocculation properties and can reduce the frictional resistance between liquids. It can be divided according to its ionic properties. There are four types: nonionic, anionic, cationic and amphoteric.

1. Flocculation. PAM can neutralize suspended matter through electricity and play a flocculation effect.

2. Adhesion. Can play a bonding role through physical and chemical effects, etc.

3. Thickener. It has a thickening effect under neutral and acidic conditions. If the pH value is above 10, PAM is easily hydrolyzed.