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1、聚丙烯酰胺_河南兴隆Polyacrylamide classification:Polyacrylamide (PAM) is a water soluble polymer, insoluble in most organic solvents, has good flocculation sex, can reduce the friction resistance between liquid, by ion characteristic can be divided into nonionic, anionic, cationic and amphoteric four types.A
2、pplication range:1, as a retention aid and reinforcing agent in the process of making paper.2. As coagulant, flocculant and sludge dehydrating agent in water treatment.3, oil drilling as precipitation agent, oil displacement agent.4, PAM is also widely used in thickening, stabilizing colloid, reduci
3、ng resistance and bonding, forming films, biomedical materials and so on.Methods of use and precautions:1, through the small test, determine the best model, and the best dosage of the product.2, the product is prepared into 0.1% (refers to solid content) of the concentration of water solution, witho
4、ut salt neutral water is appropriate.3, dissolved water, the product evenly into the mixing water, appropriate Garwin (60 DEG C) can accelerate the solution.4. Solid products are packed in polypropylene woven bags lined with plastic bags of 25kg each, and the gum bodies are packed in plastic drums l
5、ined with plastic bags of 50kg or 200kg per barrel.5, this product has moisture absorption, should be sealed in a cool and dry place, the temperature should be below 35 degrees centigrade.6, solid products to avoid spreading on the ground, in order to prevent moisture absorption products to make the
6、 ground slippery.7, the preparation of PAM water solution, should be in enamel, zinc, aluminum or plastic barrels, not in the iron container preparation and storage8, when dissolved, should pay attention to the product evenly dissolver slowly added with stirring and heating measures, should avoid so
7、lid solution at appropriate temperature preparation, and should avoid mechanical shear long time series. 60 - 200 suggestions blender turn /min, otherwise it will cause the polymer degradation, influence effect.9, PAM water solution should be used at present, and when the solution is placed for a lo
8、ng time, its performance will be based on water quality and gradually reduced10, after the suspension of Tim flocculant aqueous solution, if long time strongly mixing it, it will destroy the formed flocs of anionic polyacrylamide (APAM) Product Description: anionic polyacrylamide (APAM) for the appe
9、arance of white powder, 2500 water soluble molecular weight from 6 million to, can dissolve in any proportion in water and soluble in organic solvents. The pH range of 7 to 14, the characteristics of the high polymer electrolyte in alkaline medium, and salt electrolyte sensitive and high metal ions
10、can form insoluble crosslinked gel.Polyacrylamide product characteristics:Polyacrylamide (Polyacrylamide) or PAM, commonly known as flocculant and coagulant, is the linear polymer, the molecular weight of 300-2500 million, the appearance of a solid product is white powder, liquid is colorless viscou
11、s colloid, soluble in water, insoluble in organic solvents. Application should be dissolved at room temperature, the temperature is more than 150 degrees easily decomposed. Non hazardous products, non-toxic and non corrosive. Solid PAM has hygroscopicity, flocculation, adhesion, resistance reduction
12、, thickening, and good stability. The molecular energy of the product can be bridged and adsorbed by suspension particles dispersed in the solution, and has a strong flocculation function. The company polyacrylamide products are divided into: anionic, cationic, non-ionic, zwitterionic, different mol
13、ecular weight, different degrees of ion of the four series of products. Widely used in water treatment, metallurgy, paper making, petroleum, chemical, textile, sugar refining, medicine, coal washing, mineral processing and other fields.Polyacrylamide products details:PAM is water soluble polymers, i
14、nsoluble in most organic solvents, has good flocculation sex, can reduce the friction resistance between liquid, by ion characteristic can be divided into nonionic, anionic, cationic and amphoteric four types.Polyacrylamide application range: (PAM application is very strong)1, as a retention aid and
15、 reinforcing agent in the process of making paper.2. As coagulant, flocculant and sludge dehydrating agent in water treatment.3, oil drilling as precipitation agent, oil displacement agent.4, PAM is also widely used in thickening, stabilizing colloid, reducing resistance and bonding, forming films,
16、biomedical materials and so on.Polyacrylamide use method and notice:1, through the small test, determine the best model, and the best dosage of the product.2, the product is prepared into 0.1% (refers to solid content) of the concentration of water solution, without salt neutral water is appropriate
17、.3, dissolved water, the product evenly into the mixing water, appropriate Garwin (60 DEG C) can accelerate the solution.4. Solid products are packed in polypropylene woven bags lined with plastic bags of 25kg each, and the gum bodies are packed in plastic drums lined with plastic bags of 50kg or 20
18、0kg per barrel.5, this product has moisture absorption, should be sealed in a cool and dry place, the temperature should be below 35 degrees centigrade.6, solid products to avoid spreading on the ground, in order to prevent moisture absorption products to make the ground slippery.7, the preparation
19、of PAM water solution, should be in enamel, zinc, aluminum or plastic barrels, not in the iron container preparation and storage8, when dissolved, should pay attention to the product evenly dissolver slowly added with stirring and heating measures, should avoid solid solution at appropriate temperat
20、ure preparation, and should avoid mechanical shear long time series. 60 - 200 suggestions blender turn /min, otherwise it will cause the polymer degradation, influence effect.9, PAM water solution should be used at present, and when the solution is placed for a long time, its performance will be bas
21、ed on water quality and gradually reduced10, after the suspension of Tim flocculant aqueous solution, if long time strongly mixing it, it will destroy the formed flocs.Physicochemical properties:1, namePolyacrylamide colorless or light yellow thick colloid, odorless, neutral, soluble in water, insol
22、uble in ethanol and acetone, the temperature is more than 120 degrees, easy to decompose, flocculation, sedimentation, reinforcement and so onNonionic polyacrylamide is free of ionic groups on macromolecular chains, but amide groups can produce hydrogen bonds with many substances, such as clay and c
23、ellulose, which are flocculated by adsorption bridgingCationic polyacrylamide aqueous solution is a polymer electrolyte with a positive charge (active group). The suspension of organic colloids and organic compounds can be effectively condensed, and can strengthen the solid-liquid separation process
24、Anionic polyacrylamide polymer electrolyte is characterized in neutral and alkaline medium, sensitive to electrolyte salts. And metal ion can form insoluble gel2, technical indicatorspolyacrylamideAppearance: solid polyacrylamide is white or yellowish particles or powder; colloidal polyacrylamide is
25、 colorless or yellowish transparent colloid.Molecular weight: according to user requirements, and the relative deviation of the nominal value is not greater than 10%.Degree of hydrolysis: the relative difference is not more than 2% with the nominal value, or according to user requirements; non ionic
26、 products, hydrolysis degree is not greater than 5%.Water treatment agent: polyacrylamide should also meet the requirements of the following table.Status item, anionic type, cation type, non-ionic typeA liquid appearance; a transparent colloid; a transparent form; a colloid; a transparent colloidThe
27、 solid content of 815 / 815 815Iondegree: 1050 (adjustable) 530 700 100400 100Free monomers are 0.5, 0.5, 0.5Solid appearance white powder, white powder, white powderSolid content /% = 90 = 90 = 90Iondegree: 10100 (adjustable) 530 700 200500 100Free monomers are 0.5, 0.5, 0.5Use characteristics1) fl
28、occulation: PAM can make suspended substances through electricity neutralization, bridging adsorption, flocculation.2) adhesive: capable of mechanical, physical, chemical, or mechanical action,Adhesion.3) resistance reduction: PAM can effectively reduce the friction of fluid, adding trace amount of
29、PAM in water can reduce resistance 50 - 80%.4) thickening: PAM in neutral and acid conditions are thickening effect, when the pH value is above 10, PAM hydrolysis easily. Thickening is more pronounced when half meshed.Brief introduction to the principle of polyacrylamide PAM1) flocculation principle
30、: PAM for flocculation, floc type and surface properties, especially the zeta potential, viscosity, turbidity and pH value of slurry, the zeta potential of the surface of the particle, is adding particle polymerization of surface charge instead of PAM, can make the dynamic potential reduced and cond
31、ensed. 2) adsorption bridging: PAM molecular chains are fixed on different particle surfaces, and the particles form a bridge between the particles, so that the particles form aggregates and settle. 3) surface adsorption: the adsorption of polar group particles on PAM molecules. 4) enhancement effect: PAM molecular chains and dispersed phases, through various mechanical, physical, chemical and other functions, will be dispersed together, forming a network, and thus play an enhanced role.