桉木和相思木硫酸盐浆在轻ECF漂白中性能的研究

摘要

对桉木和相思木硫酸盐浆在轻ECF漂序中对比实验，其中对漂白前后纸张的物理性能、纤维长度、结晶度及纸浆基本性能进行检测。实验得出：在相同的漂白工艺下，相思木硫酸盐浆的选择性较好；相同漂白流程下，相思木硫酸盐浆可漂性高；在相同的盘磨转数下，桉木浆经过盘磨之后抗张强度和耐破强度都优于相思木浆；相思木和桉木浆经过漂白之后，纤维素的结晶度不同程度的降低，相思木硫酸盐浆无论原浆还是经过漂白的纸浆结晶度都高于桉木硫酸盐浆。%Comparison experiments of eucalyptus and acacia kraft pulp was carried out in light ECT bleaching sequence, in which the physical properties of paper, fiber length, degree of crystallinity and pulp basic performance were tested before and after bleaching. The results show that the acacia kraft pulp has the better selectivity, the bleachability of the aca-cia kraft pulp is higher than eucalyptus under the same bleaching process;the tensile strength and bursting strength of eucalyptus pulp are better than acacia wood pulp at the same revolution of refiner; the crystallinity degree of cellulose of both acacia and eucalyptus are reduced to some extent after bleaching, but the crystallinity of acacia kraft pulp, whether unbleached or bleached, is higher than eucalyptus kraft pulp.