Cationic Polyacrylamide (CPAM) | PAMCHEM
Cationic Polyacrylamide (CPAM) is a linear, water-soluble synthetic copolymer functionalized with quaternary ammonium groups. In municipal and industrial liquid-solid separation, CPAM neutralizes the negative surface charge of suspended colloids and forms shear-resistant flocs via polymer bridging.
PAMCHEM manufactures CPAM via controlled radical polymerization, maintaining low residual monomer levels and batch-to-batch structural uniformity across tailored molecular weight tiers.
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Product Grades & Configurations
Granular Powder (Solid Grade)
Active Content: ≥ 89% | Form: White free-flowing granules (20–80 mesh).
Infrastructure: Requires automated polymer dissolution and aging units.
Liquid Emulsion (Liquid Grade)
Active Content: 25%–40% | Form: Inverted water-in-oil dispersion.
Infrastructure: Rapid inversion (≤ 2 min) via inline static mixers or liquid dosing skids.
Charge Kinetics: Rapidly neutralizes negative zeta potentials in organic colloids and biological sludge.
Shear Resistance: Flocs withstand high mechanical stress in decanter centrifuges and screw presses.
PH Range: Operates effectively across aqueous streams from pH 4.0 to 8.5.
Dosage Efficiency: Low active consumption reduces total sludge disposal volume compared to inorganic coagulants.
Technical Specifications
Standard parameters. Custom molecular weight (8–18 Million) and ion degree (10%–70%) available.
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Technical Parameter |
Test Standard |
Specification Range |
|
Appearance |
Visual Inspection |
White Granular Powder / Milky Emulsion |
|
Molecular Weight |
Ubbelohde Viscometer |
8.0–15.0 Million Daltons |
|
Charge Density (Ion Degree) |
Colloid Titration |
10%–60% (Customizable) |
|
Dissolution Time (0.1% sol.) |
Laboratory Stirrer (25°C) |
≤ 60 min (Powder), ≤ 2 min (Emulsion) |
|
Residual Acrylamide Monomer |
HPLC |
< 0.05% |
|
Water Insolubles |
100-Mesh Sieve Residue |
< 0.5% |
|
pH Value (1% aqueous solution) |
pH Meter |
5.0–8.0 |
Applications
Municipal Sludge
Conditioning digested and secondary activated sludge before belt presses and centrifuges.
Paper & Pulp
Wet-end retention and drainage acceleration for fine fiber capture.
Industrial Effluent
Clarifying wastewater from chemical processing, textile dyeing, and food plants.
Mining
Thickening tailing slurries and accelerating coal washing sedimentation.
Grade Selection & Testing
Matrix Screening
Identify effluent type (biological sludge, mineral slurry, or pulp fibers).
Jar Testing
Evaluate candidate grades varying in ion degree (20%, 30%, 40%) at fixed dosage (2–5 ppm) to measure supernatant clarity and settling velocity.
Cake Validation
Measure pressed cake moisture to confirm the optimal molecular weight tier.
Sample Program
Request free laboratory test samples (500 g powder or 1 L emulsion) via pamchem.com for on-site trial.
Manufacturing & Quality Control
Polymerization
Conducted in closed stainless-steel reactors using thermal/redox initiators to prevent cross-linking.
Drying & Milling
Indirect steam tube drying and closed-circuit air classification milling ensure precise particle distribution.
Lot Testing
Every production batch undergoes intrinsic viscosity, colloid titration, HPLC residual monomer, and dissolution testing. COA records are archived for 5 years.
Packaging & Logistics
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Powder |
25 kg multi-wall Kraft paper bags with PE liners; 750–1000 kg FIBC Jumbo bags. Palletized for container shipping (16–18 MT per 20' GP). |
|
Emulsion |
25 kg / 200 kg HDPE drums and 1000 kg IBC totes. |
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Storage |
Non-hazardous classification. Store in dry, ventilated areas between 5°C and 30°C. Protect from moisture. |
Frequently Asked Questions
As one of the leading cationic polyacrylamide manufacturers and suppliers in China, we warmly welcome you to buy the best cationic polyacrylamide made in China here from our factory. For price consultation, contact us.
