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纳米粒子作为助留助滤剂被广泛用于造纸行业,通常与像阳离子淀粉这样的高阳离子电荷密度的聚合物共同使用。尽管如此,人们对其在湿部系统中的作用发挥及作用机理知之甚少。该研究通过一些过程参数(滤水、留着以及整个系统的静电作用)来表征纳米二氧化硅在造纸湿部系统中的作用。结果表明,纳米二氧化硅的性能可通过其与湿部系统中的复杂环境相互作用表现出来。这种相互作用机理似乎依赖于纳米粒子进入阳离子淀粉-细小组分-纤维形成的网络结构中,纤维网络在成形网上形成一种多孔结构的湿纸幅,这些均与浆料滤水和留着关系密切。
Nanoparticles are widely used in the paper industry as retention and drainage aids, and are commonly used with high cationic charge density polymers such as cationic starch. In spite of this, little is known about the mechanisms by which they play their role in the wet end system. The study characterizes the role of nanosilica in the wet end system of papermaking through some process parameters (drainage, retention, and electrostatic effects of the entire system). The results show that the performance of nanosilica can be demonstrated by its interaction with the complex environment in the wet end system. This interaction mechanism seems to depend on the nanoparticles entering the network structure formed by the cationic starch-fines-fibers, which form a wet web of porous structure on the forming web, all of which are in contact with the slurry drainage and retention Close relationship.