Application of PAM Polyacrylamide in Paper Mills

PAM Polyacrylamide is widely used in the paper industry. In the paper industry, many small and medium-sized paper mills use grass fibers or other fibers as raw materials. In order to improve product quality and increase production, various chemical enhancers are often used. PAM Polyacrylamide is widely used as an additive in the papermaking industry.

Application of PAM Polyacrylamide Additives in the Paper Industry

As a traditional paper additive, the effect of starch is not as good as PAM polyacrylamide, and grafted PAM polyacrylamide makes up for the shortcomings of the former two. Since the PAM polyacrylamide branch is connected to the molecular skeleton of the starch molecule, the relative molecular weight is greatly increased, and the numerous amide groups on the graft chain form hydrogen bonds with the hydroxyl groups in the cellulose or semi-cellulose molecules in the pulp, having a strong adsorption effect. Therefore, using PAM polyacrylamide as a papermaking additive not only plays a role in retention and filtration, but also improves the strength of paper, reduces costs, and increases economic benefits.

PAM polyacrylamide specially used in paper mills is widely used as a retention aid, filter aid, leveling agent, and water treatment agent. Its function is to improve the quality of paper, the dehydration performance of pulp, the retention rate of fine fibers and fillers, reduce the consumption of raw materials and environmental pollution. The effect of papermaking depends on its average molecular weight, ion properties, ion strength, and the activity of other copolymers. Non-ionic polyacrylamide PAM is mainly used to improve the filtration of pulp, increase the dry strength of paper, and increase the retention rate of fibers and fillers; Anionic copolymers are mainly used as dry and wet strengthening agents and retention agents for paper; Polyacrylamide cationic copolymers are mainly used for papermaking wastewater treatment and filter aid, and also have a good effect on improving the retention rate of fillers. In addition, PAM polyacrylamide is also used for papermaking wastewater treatment and fiber recovery.

Specific uses of PAM polyacrylamide in the paper industry

PAM polyacrylamide improves the retention rate of raw materials

After adding PAM polyacrylamide to the flow tank or impeller pump in papermaking, pigments, fillers, and fibers are precipitated by the flocculation effect of polyacrylamide, reducing their loss in white water.

PAM polyacrylamide as a dispersant for long-fiber papermaking

In the past, long-fiber paper was made from plant mucilage, such as gunnera, geshi and maple leaf wax. The supply of this plant mucilage is greatly affected by the season and is not suitable for mechanized production in the paper industry. Moreover, it often cannot meet the needs due to its large consumption.

PAM polyacrylamide as a pulp stabilizer

PAM polyacrylamide is better than polyvinyl alcohol in stabilizing natural latex and is a good thickener for latex. When PAM polyacrylamide is added to a 60% latex for two weeks, the viscosity can be increased by 1.5-2.0 times.

PAM olyacrylamide improves the dry and wet strength of paper

PAM polyacrylamide can be used as a dry strength additive for paper and paperboard. When flocculant polyacrylamide PMA is added to paper, tensile strength, folding resistance, puncture resistance and other dry strength properties are improved. In addition, the use of PAM olyacrylamide can also improve tear resistance, porosity, and improve visual and printing properties.