Special polyacrylamide physical properties for sewage treatment

Physical properties of polyacrylamide for sewage treatment

PAM is a linear polymer, it is soluble in water, almost insoluble in benzene, ethylbenzene, esters, and other general organic solvents, its aqueous solution is nearly transparent viscous liquid, is a non-hazardous, non-toxic, non-corrosive, solid PAM hygroscopicity, hygroscopicity with the increase in ionicity increases, the PAM is thermally stable; heated to 100 ° C stability is good, but above 150 ° C easy to decompose! Generate nitrogen, in the intermolecular imidization and insoluble in water, density (g) ml 23 ° C 1.302. glass transition temperature 153 ° C, PAM shows non-Newtonian mobility under stress.

What are the characteristics of polyacrylamide use:

1.  Flocculation: PAM can make the suspended material through the electric neutralization, bridging adsorption, flocculation.

2.  Adhesion: through mechanical, physical and chemical effects, the role of adhesion. Reducing resistance: PAM can effectively reduce the friction resistance of the fluid, adding trace PAM in water can reduce resistance by 50-80%.

3. Thickening: PAM in neutral and acidic conditions have thickening effect, when the PH value of more than 10 ° C PAM is easy to hydrolyze, semi-network structure, thickening will be more obvious.

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