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PAM (Polyacrylamide) called PAM, commonly known as flocculants or coagulant, is a linear polymer, the molecular weight between 300-2500 million, solid product is white powder appearance of teeth, a colorless viscous liquid gel-like, soluble in water, almost insoluble in organic solvents. Application should dissolve at room temperature, when the temperature exceeds 150 ℃ easy to decompose. Non-dangerous goods, non-toxic, non-corrosive. Solid PAM has moisture absorption, flocculation, adhesion, reducing resistive, thickening, and good stability.
The product molecules and suspended particles dispersed in solution bridging adsorption, with strong flocculation. Polyacrylamide products the company divided into: Anionic, cationic, nonionic, zwitterionic-type molecular weight of different ions with different degrees of the four products. Widely used in water treatment and metallurgy, paper, petroleum, chemical, textile, sugar, medicine, coal washing, dressing and other fields.
Use characteristics
1) Flocculation: PAM can call in and through the suspended material, bridging adsorption, flocculation effect.
2) adhesion: through mechanical, physical, chemical effect, from the bonding effect.
3) reduction in resistance of: PAM can reduce the fluid friction, water resistance to trace PAM will be able to drop 50-80%.
4) thickening: PAM in both neutral and acid conditions, increasing viscosity, when the PH value of more than 10 PAM easy hydrolysis. The half-mesh structure, thickening more clearly.
Introduction on the role of PAM
1) flocculation theory: PAM for flocculating, and surface properties were floc types, especially moving potential, viscosity, turbidity and the PH value of the suspension, the dynamic potential of the particle surface, is the reason for particle inhibitor to join the opposite surface charge PAM, can reduce the cohesion potentiodynamic.
2) adsorption bridging: PAM chains fixed in the different particle surface, the formation of polymer bridges between particles, the particles aggregate to form the settlement.
3) Surface: PAM molecules on a variety of polar groups adsorbed particles.
4) enhancement: PAM chain and scattered through a variety of mechanical, physical, chemical and other effects, the dispersed phase involved together to form a network to enhance the role play.
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Water Treatment Chemicals, Poly Aluminium Chloride, Polyacryamide, PolyDADMAC, Biocides, Fixatives, Surface Size Agent