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PAM/cpam/apam/polyacrylamide/cationic polyacryamide/anionic polyacrylamide
anionic polyacrylamide
Polyacrylamide
Polyacrylamide is called PAM for short.There are four types of PAM, anionic polyacrylamide(APAM),
cationic(CPAM), nonionic (NPAM),and zwitterionic .Polyacrylamide is a polymer formed from acryla
mide subunits,and it is highly water-absorbent.Polyacrylamide and its derivatives can be used as
a flocculant, thickener, paper intensifier and liquid drag reduction agent.
Specification
Item | Anionic | Cationic | Nonionic | Zwitterion |
appearance | white granular | White granular | white granular | white granular |
solid content > | 90% | 90% | 90% | 90% |
Molecular Weight | 3-20million | 3-15million | 3-15million | 3-15million |
Ionic degree(%) | 20-30 | 5-60 | 0-3 | any proportion |
water-insoble content | <0.1% | <0.1% | <0.1% | <0.1% |
Dissolution time(min) | <40 | <90 | <60 | <90 |
Applications
Flocculant:
The polarity gene adsorbs the solid particles dispersed in water, bridges between the particles and formats the large aggregates, sedimentation and separates of water, flocculates detritus and clay in drilling fluid.
Dispersant:
In the drilling mud treatment, this product can improve the lubricity and stability of the mud to reduce the water loss, prevent sticking effectively, increase drilling efficiency.
Blocking Agent:
The product can generate cross linking under the effect of Al3+, Fe 3+, Ca2+ and other ions, a part of high molecular compound is changed from linear shape into body shapes. The product is not watersoluble, and can be adsorbed on the borehole to block ground layer gaps and topreven the leakage of drilling fluid.
Lubricant:
The product can be absorbed on the surface of metal or clay particles to form liquid film to change friction on the solid surface into liquid frication, thereby lubricating drill bits and drills, lowering the mud cake frication coefficient, and reducing u
Properties
1. flocculation: PAM allows suspended substance take the effect of flocculation by charge
neutralization, bridge absorption.
2. Adhesion: have the effect of adhesion by machinery, physical, chemical.
3. reduction of resistance: PAM can effectively reduce the friction resistance of the liquid,
a little PAM can reduce 50—80% resistance.
4 . thickening: PAM in neutral and acid conditions are thickening, PAM can be easy hydrolysis
when the PH value is above 10. thicken will be more clearly when it becomes the station of
half-mesh structure.
pam/cpam/apam/polyacrylamide/cationic polyacryamide/anionic polyacrylamide
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