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Knowledge of polyacrylamide in oil field additive manufacturers

Polyacrylamide is a linear water-soluble polymer, water-soluble polymer is one of the most widely used varieties. It is polymerized from monomers such as acrylamide, and therefore has a large amount of pendant-amide groups on the main chain of its molecule. Amide groups are highly active and react with a wide variety of compounds to produce many polyacrylamide derivatives. In this way, polyacrylamide not only has a series of derivatives, but also has a variety of valuable properties, such as: flocculation, thickening (thick), surface activity.
Polyacrylamide is a broad range of products. Due to the different molecular weight, different electrical and there are many varieties, coupled with the molecular basis of the functional response derived from more varieties, these products have their own unique performance, so the corresponding use of the object. Generally can be divided into several categories.
From the relative molecular mass classification, can be divided into low molecular weight polyacrylamide (relative molecular mass of 1 million or less), the relative molecular mass of polyacrylamide (relative molecular mass of 1 million to 10 million), high molecular weight poly Acrylamide (relative molecular mass of 10 million to 15 million), ultra-high molecular weight polyacrylamide (relative molecular weight of more than 17 million).
Polyacrylamide products according to the ionic properties can be divided into the following categories: non-ionic, anionic, cationic and amphoteric polyacrylamide. These polymers may be homopolymers or copolymers.
Polyacrylamide soluble in cold water, the temperature exceeds 50 ℃ when the degradation of P prone to affect the use of the effect. The aqueous solution has a good tolerance to the electrolyte, can be resistant to enzyme erosion. High-priced salts will precipitate polyacrylamide with a degree of hydrolysis greater than 45%. Therefore, containers for polyacrylamide solutions should be dissolved and stored in stainless steel, plastic, fiberglass or other antiseptic containers.
Polyacrylamide has a long molecular chain, which allows it to bridge between particles and pull them together and settle rapidly; polyacrylamide can significantly reduce the energy required for the fluid to pass through the pipeline. Polyacrylamide is therefore widely used in a wide range of applications. China's polyacrylamide use of the top four are the oil industry, water treatment, mineral processing and coal washing, paper making.

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