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造纸工业常常使用非木材浆料取代木材浆料来生产不同类型的纸张。脱水问题是使用非木材浆料最大的限制因素,助留剂的加入可以在一定程度上解决这一问题,其中微粒助留体系的应用前景十分广阔。该研究的主要目的是表征微粒助留体系如何影响非木材浆料的留着、脱水和匀度,以及非木材浆料和木材浆料产生不同敏感度的作用和机理的区别所在。实验使用动态纸页成形器观察参照浆料和有机溶剂法麦草浆料在加入几种常用的助留剂后的不同敏感度。实验的重点是提高滤水性能。当使用膨润土-阳离子聚丙烯酰胺(CPAM)体系时,非木材浆料的滤水改善效果达到最佳,增值约为5%,不过仍然低于参照浆料的滤水性能。
The paper industry often uses non-wood pulp instead of wood pulp to produce different types of paper. Dehydration is the use of non-wood pulp the biggest limiting factor, the addition of retention aid to a certain extent, to solve this problem, of which particle retention system has a very broad application prospects. The main purpose of this study is to characterize how the particle retention system affects the retention, dehydration and formation of non-wood pulp and the differences in the roles and mechanisms that produce different sensitivities for non-wood pulp and wood pulp. The experiments used a dynamic sheet former to observe the different sensitivities of the reference and organic solvent method wheat straw slurries after the addition of several commonly used retention aids. The focus of the experiment is to improve the drainage performance. When using bentonite-cationic polyacrylamide (CPAM) systems, non-wood slurries achieve the best drainage improvement with an added value of approximately 5%, but still lower than that of the reference slurry.