Home > News > Content
Polyacrylamide Industry Application
Oct 11, 2017

Classification of polyacrylamide polyacrylamide products introduction: 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 points can be divided into non-ionic and anionic, cationic and amphoteric four types. (note: polyacrylamide is different from acrylamide)

The physical and chemical properties

PAM PAM consists of acrylamide (AM) monomers by free radical polymerization of water soluble linear polymers, has good flocculation sex, can reduce the friction resistance between liquid, by ion characteristic points can be divided into non-ionic and anionic, cationic and amphoteric four types. Polyacrylamide (PAM) does not dissolve in most organic solvents, such as methanol, ethanol, acetone, ethyl ether, fatty hydrocarbon and aromatic hydrocarbon, except a few polar organic solvents, such as acetic acid, acrylic acid, chloroacetic acid, ethylene glycol, oil, melting urea and formamide. But these organic solvents have limited solubility and often need to be heated, otherwise there is no application value.

At the appropriate low concentration, polyacrylamide solution can be regarded as the network structure, and the entanglement and hydrogen bonding of the interchain machinery form a network node. When the concentration is high, the solution is gelatinous because the solution contains many chain contact points. PAM aqueous solution with a lot of energy and water mutually soluble organic matter has good compatibility, has good compatibility to the electrolyte, the ammonium chloride, calcium sulfate, copper sulfate, potassium hydroxide, sodium carbonate, sodium borate, sodium nitrate, sodium phosphate, sodium sulfate, zinc chloride and boric acid, and phosphoric acid substances such as insensitive. [1]

Polyacrylamide mesh: the mesh refers to the granularity of the material or thickness, item number is the number of squares on the per unit area. General definition refers to the 1 inch by 1 inch area has how many mesh count, the number of mesh screen. Such as 600 mesh is 600 per square inch square mesh, mesh of polyacrylamide 20 mesh to 80 mesh, which is between 0.85 mm to 0.2 mm, this is granular polyacrylamide mesh size, powdered polyacrylamide mesh size can be controlled at about 100 mesh, mesh of polyacrylamide is more easily dissolved, the greater the polyacrylamide mesh size alone is unable to measure the quality of the product!

Polyacrylamide is white powder or granules, density of 1.32 g/cm3 (23 degrees), glass transition temperature is 188 degrees, the softening temperature to 210 degrees, a general method contains a small amount of water when dry, dries quickly again suck up moisture from the environment, with the separation of freeze drying homopolymer is white fluffy non-crystalline solid, but when after precipitated from the solution and dry is vitreous partially transparent solid, completely dry PAM PAM is brittle solid white, dry goods polyacrylamide is usually under the condition of moderate dry, average moisture content is 5% ~ 15%, casting preparation of polymer film on glass plate, is transparent, hard, brittle solid

Industry application

1. It is used for paper industry and one is to improve the retention rate of filler and pigment. To reduce the loss of raw materials and environmental pollution; 2 it is increasing the intensity of paper (including dry strength and wet strength), in addition, the use of PAM can also improve paper tear resistance and porosity, and to improve vision and printing performance, also used in food and tea wrapping paper.

2. Used for oil industry, oil production, drilling mud, waste mud treatment, prevention of water channelling, reducing friction, improving recovery rate, and three oil recovery.

3. For textile sizing agent, slurry performance stability, low slurry, low end rate of fabric, and smooth surface.

4. PAM is also widely used in thickening, stabilizing gel, drag reduction, bonding, film forming, biomedicine materials and so on.

5. Other industries, food industry, used in sugarcane sugar, sugar beet sugar production, sugar cane juice clarification and syrup phosphorus float extraction. Enzyme preparation fermented liquid flocculation clarifying industry, also used in feed protein recovery, stable quality, good performance, recovery of protein powder to chickens and raising the survival rate of weight gain, no adverse effects of egg production, synthetic resin coating, civil water plugging grouting materials, building materials industry, improve the quality of cement, construction adhesive, caulking repair and plugging agent, soil improvement, electroplating industry, printing and dyeing, etc.

Gas flotation polyacrylamide

First know which industries are commonly used to air bearing industry, air flotation gas was mainly used for sewage oxidation and gas float is mainly aim at the depth of the secondary biological treatment process, is by far the most common industry for additional processing after the oily sewage drain. The air float method can be used to concentrate the activated sludge effectively. Removal of suspended impurities in sewage. Air flotation with anionic polyacrylamide effect is better, especially the part of the gas reflux dissolved air flotation, with total reflux, total dissolved air flotation technology advantages, compared with cloth air flotation sewage quantity is big, has the characteristics of high treatment effect; Compared with the advantages of low energy saving and running cost, it is suitable for modern enterprises to save energy, protect environment, reduce consumption and increase efficiency.