Warer treatment Polyacrylamide

Polyacrylamide can be used as effective flocculants, thickener, paper intensifier and liquid drag reduction agent, etc
Introduce
Polyacrylamide referred to as PAM, is a linear polymer and one of the most widely used water-soluble polymer species, PAM and its derivatives can be used as effective flocculants, thickener, paper intensifier and liquid drag reduction agent, etc. It’s also widely used in water treatment, paper making, petroleum, coal, mining and metallurgy, geology, textile, construction and other industrial sectors.
Specifications and Technical data

Index

Anionic polyacrylamide

Non-ionic polyacrylamide

Cationic polyacrylamide

Appearance

White powder

Size, mm
≤ 2
%
Solids content
≥88
min
Dissolve time
≤1.5
%
Insoluble
≤2

Molecular weight
(ten thousand)
600-2000
800-1500
10-50%
Ion concentration
%
Hydrolyzing degree
13-30
5-15
5-50

Physical properties and Properties for use:

Physical properties:
Formula (CH
2
CHCONH
2
)
PAM is a kind of linear polymers, it is easily soluble in water, almost insoluble in benzene, ethylbenzene, esters, acetone and other general organic solvents, its solution is the almost transparent viscous liquid, is a non-dangerous goods, no toxic, non-corrosive. Solid PAM has hygroscopicity, moisture absorption increases with the increase of ionic degrees. PAM has a thermal stability, the stability also good when heated to 100 ° C, but easy to decomposes of nitrogen above 150 ° C. It would not soluble in water when the role of intermolecular imidization occurs, density (g) ml 23 ° C 1.302. Glass transition temperature is 153 ° C, PAM performance non-Newtonian liquidity under the stress.

Properties for use:
1) Flocculence: PAM allows suspended material through the electrical neutralization, has the effect of bridging adsorption and flocculation.
2) Adhesiveness: played the role of adhesion through mechanical, physical, chemical activity.
3) Drag reduction: PAM can effectively reduce the fluid friction resistance; add dram of PAM into water can be able to reduce 50-80%.
4) Thickening: PAM has the thickening effect in both neutral and acidic conditions; it’s easily for PAM hydrolyzes when the PH value in more than 10 ° C; the thickening effect will be more obvious when it shows half-mesh structure.