Polyacrylamide emulsion is prepared by dispersion or inverse emulsion polymerization, which is a form
of polyacrylamide liquid present. Besides the characteristics of solid polyacrylamide flocculants, through
the molecular chain of polar groups to adsorb suspended solids in the water particles, the emulsion
could formats the large flocs through bridge between the particles or electricity.

Polyacrylamide emulsion is divided into two types, water-in-oil, and water-in-water. Unlike
polyacrylamide powder, the drying process is not required in the emulsion type polyacrylamide
manufacturing process. Therefore, the polyacrylamide emulsions molecular weight and water solubility
than the same powder polyacrylamide molecular weight is higher. Water-in-oil emulsions are usually
water-insoluble. Therefore, in the emulsion-type polyacrylamide manufacturing process, or in the use of
emulsion before the dissolution of the dilution process, the need to add a hydrophilic surfactant, so that
when the emulsion type of water reverse phase, so that the emulsion can be dissolved in the water. But
the water-in-water emulsion is very easy to dissolve, and also the synthesis process is more advanced.
Dissolve the emulsion with water to use high-speed shear when the way, so that the emulsion of
polyacrylamide hydrogel in full contact with water and quickly dispersed in water. If the emulsion and
water can fully contact with the dispersion, its dissolution time is generally only 3-15 minutes. The
storage temperature of the emulsion is preferably between 0 and 30 ° C, and the average emulsion is
stored for 6 months. The temperature of the emulsion freezing is lower than that of the water. Frozen
emulsion can continue to use after melting, its performance will not be significantly changed. Granular
polyacrylamide is made by the AM (acrylamide) monomer polymerization colloid, crushing and drying
and then obtained. There are too many disadvantages for polyacrylamide powder, such as the
production of too much dust, crushing damage molecular chain, drying, the use of stirring to be
dissolved (waste a lot of time and energy consumption), but the largest particle polyacrylamide is easy to
transport and storage.

In addition to the advantages of solid polyacrylamide, the emulsion flocculants also have own
advantages like a large charge density options, dissolution speed, low energy consumption, storage and
easy to use and so on. Compared with the traditional cationic polyacrylamide products, polyacrylamide
emulsion for a wider range of PH value, higher charge stability, flocculation effect is better, less dosage
and a series of advantages. Also suitable for construction sites that do not have a large dissolution
device installed.

Polyacrylamide emulsion is widely used in a variety of domestic sewage, chemical wastewater, oil field
sewage, sludge dewatering, paper and other fields. Polyacrylamide water-in-oil emulsion is also widely
used in urban sewage treatment, brewery, starch factory, food Processing plants and other sewage
treatment. Disposal of flocculation of organic suspended solids in acidic or acidic effluents is particularly
applicable. In the paper industry, it could be used as a retention aid filter, papermaking sewage
treatment. Oil industry can be used as drilling emulsion coating agent or degreasing agent.