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在实验室条件下,利用纤维质量分析仪(FQA)分析纤维长度、卷曲、扭结等参数及细小纤维含量的变化,并研究高浓磨浆对杨木APMP的纤维形态及成纸性能的影响。结果表明,经高浓打浆后的纤维随打浆程度的增加,纤维长度下降,扭结和卷曲指数先增加后下降,细小纤维含量增加。随游离度的降低,成纸内结合强度和抗张强度升高,白度和松厚度略微下降,撕裂指数先升高后下降。
Under laboratory conditions, fiber length, curling, kinking and other changes of fiber content were analyzed by fiber quality analyzer (FQA), and the effect of high consistency refining on fiber morphology and paper properties of poplar APMP was studied. The results showed that with the increase of beating degree, the fiber length decreased, the kink and curl index first increased then decreased, and the content of fine fiber increased. With the decrease of freeness, the bonding strength and tensile strength in the paper increased, the whiteness and bulk density decreased slightly, and the tear index increased first and then decreased.