Polyacrylamide is a widely used polymer flocculant in the domestic water purification market, and is often used as a coagulant aid. Polyacrylamide raw material is made from polypropylene nitrile, which can be hydrolyzed into acrylamide under certain conditions. Later, polyacrylamide is formed by suspension polymerization. Therefore, polyacrylamide is called water-soluble resin, which is divided into two types: solid and liquid. When present as a liquid, it has a certain viscosity.
Anionic polyacrylamide has amide groups that can attach to the surface of sediment particles through hydrogen bonding. Anionic polyacrylamide has long molecular chains and is characterized by a large number of long chains on the surface of the groups. Thus achieving excellent flocculation effect, utilizing molecular chains to directly bridge and link each other, forming * flocculants, thus achieving water purification effect.
Anionic polyacrylamide molecular weight: When used as an industrial wastewater treatment agent with a molecular weight between 6 million and 18 million, we need to understand the misconception that the higher the molecular weight, the better the wastewater treatment effect. When used as a water treatment agent, the molecular weight is between 4 million and 18 million, and when used as a thickener, the molecular weight is between 18 million and 25 million. Specific types of polyacrylamide need to be selected based on various indicators of different types of wastewater.
Another very important indicator of anionic polyacrylamide is its degree of hydrolysis. At present, the market can be divided into four specifications based on hydrolysis degree: medium hydrolysis degree anionic polyacrylamide, hydrolysis degree: 23% -27%, medium low hydrolysis anionic polyacrylamide, hydrolysis degree: 17% -19%; Low hydrolysis anionic polyacrylamide, hydrolysis degree: 12% -15%; Highly hydrolyzed anionic polyacrylamide, hydrolysis degree: about 37%.
