The production process of flocculants mainly includes the following：

1. Hydrolysis method.

Compared with the copolymerization method, the water-soluble anti-dandruff factor (HD) of the products prepared by the general hydrolysis method is not high, less than 30%. In theory, the products with HD greater than 70% should be prepared by the copolymerization method, which has certain requirements for the hydrolysis temperature and events. , and macromolecular degradation easily occurs during the hydrolysis process. Ji Lanying of Tianjin University and others used the hydrolysis agents NaOH and Na2CO3 to study the hydrolysis method, and found that NaOH not only has the effect of accelerating the hydrolysis, but also deepening the hydrolysis. If you want a latex with a low degree of hydrolysis (<10%), NaOH can be used as a hydrolyzing agent. To prepare a latex with a medium degree of hydrolysis (more than 10%), it is best to use NaOH and Na2CO3 to co-hydrolyze, so that it can be achieved in a relatively short time. High hydrolysis value. In recent years, high molecular weight, especially ultra-high molecular weight acrylic acid and acrylamide polymers have played an undisputed role in tertiary oil recovery. Compared with the hydrolysis method, the AA/AM copolymer prepared by the copolymerization method generally has a low molecular weight and poor water solubility. Therefore, the ultra-high molecular weight AA/AM copolymer is usually prepared by the hydrolysis method.

2. Aqueous solution polymerization

3. Inverse emulsion polymerization

Before inverse emulsion polymerization and inverse suspension polymerization, it is necessary to prepare an inverse colloidal dispersion system, that is, the monomer aqueous solution is dispersed by stirring or in the oil phase of the emulsifier to form a water/oil (W/0) heterogeneous dispersion system, and then Add initiator for free radical polymerization.