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Cationic Polyacrylamide Powder (CPAM for paper-making)
CAS No.:
9003-05-8
Molecular Formula:
(C3H5NO)n
Structural Formula:
Properties:
Cationic polyacrylamide molecules carry cationic groups. It effectively neutralizes the large number of negatively charged fibers, fillers, and colloidal particles in pulp, thereby achieving efficient flocculation. Cationic polyacrylamide typically has a molecular weight ranging from 7 to 13 million. Products with low, medium, or high molecular weights can be selected based on application requirements. CPAM is completely soluble in cold water, with a dissolution time ≤60 minutes. This property facilitates in-line dilution and continuous addition. CPAM remains stable across a pH range of 3 to 10, making it suitable for the fluctuating acidic and alkaline conditions in the paper mill wet end. Qualified products contain residual acrylamide monomer ≤0.1%, meeting requirements for food-grade paper and environmental protection.
Specification:
| Products | Product Name | Degree of Hydrolysis | Molecular Weight | Application |
|---|---|---|---|---|
| Cationic PAM Powder | IROFLOC802 | Super Low | Medium | Paper wastewater
treatment |
| Cationic PAM Powder | IROFLOC805 | Low | Medium | |
| Cationic PAM Powder | IROFLOC801 | Low | High | |
| Cationic PAM Powder | IROFLOC815 | Low | High | |
| Cationic PAM Powder | IROFLOC802 | Medium Low | High | |
| Cationic PAM Powder | IROFLOC803 | Medium | High | Municipal and industrial
sludge dewatering |
| Cationic PAM Powder | IROFLOC804 | Medium | High | |
| Cationic PAM Powder | IROFLOC845 | Medium | High | |
| Cationic PAM Powder | IROFLOC805 | High | High | |
| Cationic PAM Powder | IROFLOC806 | High | Super high | |
| Cationic PAM Powder | IROFLOC865 | High | Super High | Municipal and industrial
sludge dewatering with high organic content |
| Cationic PAM Powder | IROFLOC807 | High | Super high | |
| Cationic PAM Powder | IROFLOC808 | High | Super high | |
| Cationic PAM Powder | IROFLOC885 | High | Super high | |
| Cationic PAM Powder | IROFLOC809 | High | Super high | |
| Cationic PAM Powder | IROFLOC502 | High | Super High | Retention and Drainage
agentfor Paper-making |
| Cationic PAM Powder | IROFLOC602 | High | Super High | |
| Cationic PAM Powder | IROFLOC802 | High | Super High | |
| Cationic PAM Powder | IROFLOC803 | High | Super High |
Applications:
1. Retention and Filtration Aid
Through a “patching/bridging” mechanism, it forms larger flocs by binding fine fibers and fillers (CaCO3, TiO2, kaolin) with long fibers. This enhances wire retention (by 3~8 percentage points), reduces white water solids content, and minimizes raw material loss.
Improves wire drainage performance, increases paper machine speed by 5~15%, and reduces drying steam consumption.
2. Dry Strength Agent
Forms hydrogen and ionic bonds with fibers, increasing paper strength properties (tensile, ring crush, burst) by 10~25%. Can partially replace starch, reducing pulp consumption.
3. White Water and Sludge Treatment
Flocculates and clarifies white water to recover fibers and fillers, reducing clean water consumption. Dewatering paper sludge reduces cake moisture content to 55~65%, decreasing sludge volume by over 20%.
4. Green Environmental Synergy
Reduces consumption of inorganic salts like alum and PAC by 30~50%, lowering salt load and corrosion. Minimizes chemicals required for subsequent wastewater treatment, supporting corporate carbon reduction efforts.
Usage:
Retention aid and filter aid: 0.03~0.15% (based on absolute dry pulp). Use the upper limit when operating at high speeds, with high filler ratios, or under high white water containment conditions.
Dry strength enhancement: 0.2~0.6% (relative to absolute dry pulp), depending on strength targets and whether starch is blended.
Clear water: 0.5~2 mg/L (circulating clear water volume), adjusted based on turbidity and circulation rate.
Sludge dewatering: 1~4 kg/t of dry sludge. Requires cup test optimization based on filter press type.
Attention:
The dissolution concentration should be 0.1~0.3%. First disperse in cold water for 30~40 minutes, followed by 30 minutes of maturation. Avoid high-speed shear to prevent molecular chain breakage. Regarding addition points, retention and filtration aids are typically added after the pressure screen or before the slurry pump. Dry strength agents can be added to the slurry tank or conditioning tank. For sludge dewatering, mixing occurs in the pipeline before entering the filter press. Regarding compatibility, separate addition from anionic aids (e.g., CMC, ASA emulsion) is required to prevent charge neutralization failure. They can also be blended with nonionic PAM and starch.
Package and Storage:
25Kg/bag(Powder), 25Kg/bag(Colloid), inner bag is PVC film, outer weaved plastic bags. Keep dry.
Synonyms:
Cationic polyacrylamide; CPAM; C-PAM; Polyacrylamide; PHPA Coagulant; Cationic flocculant; Cationic polyelectrolyte; Cationic polymer; Cationic PAM; Cationic acrylamide copolymer; Cationic polymeric coagulant; Cationic polyelectrolytic flocculant; Cationic water-soluble polymer; Cationic emulsion polymer; Cationic synthetic polymer; Positively charged polyacrylamide.