Molecular weight is an important indicator to measure polyacrylamide, the type is also from 3 million to 30 million, where is the difference between high molecular weight and low molecular weight, why to distinguish is a lot of people do not know, read the following you will understand:
The difference between high and low molecular weight
6-12 million molecular weight is a low molecular weight, mainly used as a dispersant, can be uniform dissolution and sedimentation condensation.
12-18 million molecular weight belongs to neutral molecular weight, mainly used as dry strength agent, usually used in paper mills;
18-30 million molecular weight belongs to high molecular weight, mainly used as thickening agent, mainly used in oil fields, incense making, gum making and other industries, the most widely used.
The distinction of solubility
The higher the molecular weight, the lower the solubility, the greater the viscosity, according to different water quality using high, low and different molecular weight.
The higher the molecular weight, the more expensive the price, more than 25 million molecular weight basic need to import to buy, but a lot of sewage is not used, unless some special sewage, so generally do not use import, waste resources do not say, but also a waste of money.
On the market, the general molecular weight of polyacrylamide is the most widely used, followed by low molecular weight, and finally high quality, why? The above price distinction has indicated the reason, no more to say.
Polyacrylamide (PAM) is a linear polymer, chemical formula is (C3H5NO) N. It is a hard glassy solid at room temperature. The products are liquid glue, latex and white powder particles, translucent beads and flakes. Good thermal stability. Can be dissolved in water in any proportion, aqueous solution is uniform transparent liquid. After long-term storage, the solution viscosity will decrease due to slow degradation of polymer, especially when the storage conditions are poor.  Polyacrylamide, as lubricant, suspension agent, clay stabilizer, oil displacement agent, water loss reducer and thickener, has been widely used in drilling, acidification, fracturing, water plugging, cementing and secondary oil recovery, tertiary oil recovery. It is a very important oil field chemical.Learn more
Polyferric sulfate is a kind of inorganic polymer coagulant with superior performance. It is a light yellow amorphous powdery solid and easily soluble in water. 10% (mass) aqueous solution is red-brown transparent solution and hygroscopic. Polyferric sulfate is widely used in drinking water, industrial water, all kinds of industrial waste water, municipal sewage, sludge dewatering purification treatment.Learn more