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采用PFI磨对高得率浆进行打浆,分析了打浆对高得率浆的强度性能、光学性能和纤维形态的影响。结果表明,针叶木浆的强度性能随着游离度的降低先变大后变小,在CSF310mL时达到最大值,而阔叶木浆则一直呈增大趋势;打浆使白度和不透明度下降;纤维的长度随着打浆的进行而变短,扭结指数呈下降趋势,平均宽度、纤维形态参数和细小纤维都呈增加趋势;打浆后针叶木浆纤维0.2～0.5mm和0.5～1.5mm占主要地位,而阔叶木浆则以0.2～0.5mm和细小纤维为主。打浆后高得率浆纤维的结晶度都是随着游离度的下降先增大后减小。
The PFI mill was used to pulverize the high-yield pulp, and the effect of beating on the strength, optical properties and fiber morphology of the high-yield pulp was analyzed. The results showed that the strength properties of softwood pulp first increased and then decreased with the decrease of freeness, reaching the maximum value when the CSF310mL reached, while the hardwood pulp had a tendency of increasing; the beating reduced the whiteness and opacity; the fiber The kink index decreased, the average width, fiber morphology parameters and fine fibers tended to increase. After beating, the softwood fibers of 0.2-0.5 mm and 0.5-1.5 mm accounted for the dominant position, The hardwood pulp is 0.2 ~ 0.5mm and fine fibers. After beating, the crystallinity of high-yield pulp fibers increases and then decreases with the decrease of freeness.