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>Effect of fines, fiber morphology and network structure on the ring crush strength and creep of eucalypt NSSC pulp hand sheets
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Effect of fines, fiber morphology and network structure on the ring crush strength and creep of eucalypt NSSC pulp hand sheets
This paper investigates a previous finding, that the removal of fines from an unbeaten E. nitens NSSC sheet reduced ring crush strength but with E. regnans NSSC it increased strength. This work did not reproduce these results with ring crush strength of both E. nitens and E. regnans NSSC fibers increasing as NSSC fines were added. The increase in both ring crush strength and density were greater for E. nitens than for E. regnans although the rate of, increase in ring crush strength with density was greater for E. regnans. There appeared to be small differences in the effect of E. regnan and E. nitens fines on ring crush strength. Differences in the E. nitens and E. regnans fibres were used to explain these results. The minimum secondary creep rate in cyclic humidity conditions was also established for each of the samples using the same creep load in all cases. Variability was too high to detect any differences between the sheets containing E. regnans fines and those containing E. nitens. Creep rate decreased with the addition of fines, although in this case the change was greatest for E. regnans fibres.
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机译：本文研究了先前的发现，从不败的E. nienNSSC片材中除去芬汁含量降低的环挤压强度，但用E. Regnans NSSC增加强度。这项工作没有再现这些结果，随着添加NSSC细粉的NINENAN和E.Regnans NINAS纤维，RegNans NINASSSC纤维的肾致抗强度。对于E. Regnans，Repens的抗振强度和密度的增加较大，尽管E. Regnans的速率较大，但是对于E. RegNans的速率较大，因此RegNans的速率较大。 E. Regnan和E.抗环挤压强度的效果似乎存在较小的差异。 E. NITens和E.Regnans纤维的差异用于解释这些结果。在所有情况下，也为每个样品建立了循环湿度条件下的最小二次蠕变率。可变性太高，无法检测含有E. Regnans含量的片材与含有E. niens的片材之间的任何差异。蠕变率随着罚款的增加而降低，但在这种情况下，E. Regnans纤维最大的变化最大。
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