In the paper industry, the papermaking auxiliaries polyacrylamide plays a three-fold role: dispersion (dispersant), reinforcement (enhancer), flocculation (flocculant), flocculation is used to treat wastewater, this is understood This time, I mainly talked about how the papermaking auxiliary polyacrylamide is used as a dispersing agent.

Dissolution process of polyacrylamide as dispersant: Polyacrylamide is also a water-soluble linear branched organic polymer with high dissolution rate, complete dissolution and high viscosity.
The papermaking auxiliary polyacrylamide is used in the production of paper products, which can increase the viscosity of the pulp and effectively disperse the fibers and fillers. Therefore, the paper which is copied is even and smooth and flexible without holes. Adding the product can also stabilize the papermaking performance. It is not easy to break the paper and powder when the paper is used.

At the same time, it can also improve the tensile strength and dry and wet strength of paper products and save pulp. The paper discharge rate is increased by 15%, and the speed of the paper is greatly improved. The paper dispersant is suitable for all kinds of papers and is widely used in toilet paper.

The mechanism of action of polyacrylamide as a dispersing agent: the surfactant can fully wet and uniformly disperse the solid dispersed particles in the suspension, and minimize the separation and aggregation of the system and the sedimentation speed of the solid particles. In order to maintain the maximum dynamic stability of the suspension.

Since the polyacrylamide molecular chain contains a carboxyl group, it has a surface tension reducing effect and contributes to the wetting of the solid by water, which is particularly advantageous for the dispersion of fillers, fibers and the like in water.
When the papermaking auxiliary polyacrylamide is added to the slurry, the surface of the filler and the fiber can be formed into a bimolecular structure, and the extreme of the outer dispersant has a strong affinity with water, and the solid particles such as fillers and fibers are wetted by water. degree. The solid particles such as fibers and fillers are separated by electrostatic repulsion, thereby achieving a good dispersion effect..