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探讨聚乙烯亚胺(PEI)和聚合氯化铝(PAC)两种阴离子垃圾捕集剂对APMP浆阳离子需求量的影响,并研究APMP浆配抄文化用纸过程中,两种阴离子垃圾捕集剂与成纸施胶度、抗张指数、撕裂指数、耐破指数和内聚力等物理性能之间的关系。结果表明:PEI和PAC是两种有效的ATC,可有效中和阴离子垃圾的负电荷,但也有一部分被带负电的纤维所吸附。相对而言,PEI的使用效果明显优于PAC,PEI的用量以0.1%～0.2%为宜。PEI和PAC的使用可显著提高AKD的施胶效果,同时在一定程度上改善了纸张的抗张指数、耐破指数、撕裂指数和内聚力。其中,PEI对纸张施胶度和内聚力的改善效果要明显优于PAC,在其他三个强度指标上优势不明显。
The effects of polyethyleneimine (PEI) and polyaluminum chloride (PAC) on anionic cations demand of APMP were investigated. In addition, two anionic trash catches The relationship between the agent and the physical properties of the paper such as sizing degree, tensile index, tear index, burst index and cohesion. The results showed that PEI and PAC were two effective ATCs, which could effectively neutralize the negative charges of anionic trash, but some of them were also adsorbed by negatively charged fibers. Relatively speaking, the effect of using PEI is obviously superior to that of PAC. The amount of PEI is preferably 0.1% ~ 0.2%. The use of PEI and PAC can significantly improve the sizing effect of AKD and at the same time improve the paper tensile index, burst index, tear index and cohesion to a certain extent. Among them, the improvement effect of PEI on sizing and cohesion of paper is obviously better than that of PAC, and there is no obvious advantage in the other three strength indexes.