The use of polyacrylamide

- Sep 04, 2018-

For papermaking: Polyacrylamide in papermaking industry is mainly used in two aspects: first, improve the retention rate of fillers, pigments, to reduce the loss of raw materials and environmental pollution; The second is to improve the strength of the paper (including dry strength and wet strength).

In addition, the use of polyacrylamide can also improve the tear resistance and porosity of paper to improve the visual and printing performance.

Pharmaceutical industry: One of the characteristics of Pam Hydrogel is that at a certain critical temperature, its swelling in the water with a small change in temperature occurs drastic mutation, volume changes can be up to dozens of to hundreds of times times. This property can be used in aqueous solution extraction process, to avoid high temperature, which is valuable for some organic or biological substances extracted.

Pam Water Sol can also be used to control the release of drugs and enzyme embedding, protein electrophoresis, artificial organ materials, contact lenses and so on.

Metallurgical industry: In the mining process, a large amount of water is usually used, and the useful solids in the water are often recycled, and the wastewater is purified and reused. The application of polyacrylamide Flocculation can promote the sinking of aggregates, the clarification of liquids and the dehydration of mud cakes, which can improve production efficiency, reduce the loss of tailings and water, reduce equipment investment and processing costs, and avoid environmental pollution.

Uranium extraction is one of the earliest important application fields of polyacrylamide, when leaching uranium ore with acid or sulfonate solution, it is very effective to add polyacrylamide treatment in the concentration and filtration of the leaching material.

Printing and dyeing industry: Polyacrylamide is used as sizing agent and finishing agent for fabric treatment, as well as a protective layer which can produce soft, wrinkle-proof and mildew-proofing bacteria. It can reduce the elongation of spun yarn by using its strong hygroscopic characteristics. Polyacrylamide as a post-treatment agent can prevent the fabric of electrostatic and flame retardant.

As dyeing auxiliaries, polyacrylamide can make the product adhesion fastness, high brightness, but also as a bleaching non-silicone polymer stabilizer

Other applications: Water Sensitivity Gel: the swelling of polyacrylamide hydrogel in water has a sharp mutation in a critical temperature with a slight change in humidity, with a volume change of up to dozens of to hundreds of times times. This property can be applied to the extraction of some aqueous solution, and exemption from the use of high temperature, some organic matter or biological substances extract is quite valuable. Food processing: polyacrylamide can be used in the sugar industry chemical additives, in addition, can be used for a variety of meat, fruits and vegetables cleaning water purification and wine and beer clarification, the use of high molecular weight polyacrylamide (hydrolysis degree 25%-30%), as a flocculant can be used for syrup clarification treatment, can be removed as much as possible non-sugar, to improve quality. Electroplating industry: In electroplating solution, the addition of polyacrylamide can make the metal precipitation uniformity, so that the coating more bright. Absorbent resin: superabsorbent resins have been widely used in industry, agriculture and daily life, such polymer gels have a high strength, water absorption of up to hundreds of times times the weight, or even more than thousand.

The demand for polyacrylamide has also increased rapidly due to the increase in the need for high water-absorbent resins for the production of wet urine and sanitary napkins. Widely used in petrochemical, metallurgy, coal, mineral processing and textile and other industrial sectors, used as sedimentation flocculant, oilfield water thickening agent, drilling mud treatment agent, textile slurry, paper enhancer, fiber modifier, soil conditioner, earth stabilizer, fiber paste, resin processing agent, synthetic resin coatings, adhesives, dispersants and so on.