polyacrylamide (PAM) is a kind of water-soluble polymer, insoluble in most organic solvents, it has good flocculability and can reduce the friction resistance between liquid. APAM can be divided into four types by ion characteristic points, non-ionic and anionic, cationic and amphoteric.
Polyacrylamide application method and attention:
1, Take a the test to decide the optimum model, and the best dosage of the product. 2, Make product 0.1% mixture (solids) concentration of aqueous solution, with the neutral water of salt-free advisable.
3, Put this product evenly into the mixing water, heating (< 60 ℃) can accelerate into solution properly.
4, Solid products are packed in polypropylene woven bags, lined with plastic bags, each bag is 25 kg, packed in plastic drum, colloidal body lined with plastic bags, 50 kg or 200 kg a barrel. 5, this product has hygroscopicity and should be sealed in a cool and dry place, the temperature is lower than 35 ℃.
6, Solid products should be avoided to scattered on the ground, in case the product to make the floor become slippery after moisture absorption.
7, Preparation of PAM aqueous solution, should be in enamel, zinc, aluminum or plastic, preparation and store in iron container.
8, While dissolved APAM, should pay attention to the product evenly slowly stir in belt and heating measures dissolver, solid and should be avoided, the solution prepared under optimum temperature, the mechanical shear and should avoid long time play. Suggest agitator 60-200 r/min, otherwise it will lead to polymer degradation, affect the use effect.
9, PAM aqueous solution should be active now, when dissolved liquid placed for a long time, its performance will be according to the condition of water quality and reduce gradually.
10, After the house of suspension add flocculant solution, if have vigorously stir, long time will damage has been formed the floc of anionic polyacrylamide.
Anionic polyacrylamide (APAM) appearance is white powder, molecular weight from 6 million to 25 million water solubility is good, can be dissolved in any proportion and insoluble in organic solvents. Effective PH range of 7 to 14, in a neutral alkaline medium shows the characteristics of high polymer electrolyte, and salts electrolyte sensitive, and high metal ions can stitch insoluble gel. Mixed nonionic polyacrylamide and other chemical additives, plugging agent used in oilfield. Below is the ion polyacrylamide quality standards and application scope.