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How do papermaking polyacrylamide chemicals improve water retention in pulp?
The main reasons why papermaking polyacrylamide chemicals can improve the water retention of pulp are as follows:
Excellent dispersing effect: Polyacrylamide has an excellent dispersing effect, which can evenly disperse fibers, fillers, and impurities in the pulp, preventing them from clumps. This helps to increase the contact surface area between the pulp and water, improve the dispersion and permeability of water in the pulp, and thus improve the water retention performance of the pulp.
Hydrophilic groups: Polyacrylamide molecules have hydrophilic groups, which can be adsorbed on the surface of pulp particles, reduce surface tension, and enhance the interaction force between water and pulp particles. This helps water to be better absorbed and retained by the pulp, improving the water retention of the pulp.
Stable dispersion system: Polyacrylamide can form a stable dispersion system in the pulp, preventing the precipitation and stratification of fibers and fillers. This helps to maintain the uniformity and stability of the pulp, prevent water from clumps in the pulp, and thus improve the water retention of the pulp.
Extended water retention time: The combination of polyacrylamide molecules with the surface of pulp particles can prevent water from being absorbed and fixed by the pulp particles, thereby extending the residence time of water in the pulp. This helps to improve the stability of the pulp and optimize the paper forming and drying process, further improving the water retention of the pulp.
Conclusion:
papermaking polyacrylamide chemicals can effectively improve the water retention of pulp, thereby improving the efficiency and stability of the papermaking process, and optimizing the forming and performance of paper.
