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Nonwood pulp constituents Part Ⅱ - Combined use of Bauer-McNett apparatus and optical analyser

机译:非木材纸浆成分第二部分-Bauer-McNett仪器与光学分析仪的组合使用

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摘要

Fibre dimension analysis is vital for paper quality optimisation. Due to the heterogeneous nature of nonwood pulp, fibre dimensions are difficult to analyse. The applicability of two different fibre length analysis methods for nonwood fibre were compared: an optical fibre length analyser (FiberLab) and Bauer-McNett apparatus. According to the experiments, fines evaluation is a challenge: the optical analyser does not give mass-based values whereas the Bauer-McNett analysis underestimates the fines amount. Due to the limitation of both methods, the parallel utilisation of an optical method and Bauer-McNett classification is considered advantageous. The standard fractionation time recommended in the SCAN test method was considered too short and so a longer fractionation time is suggested.
机译:纤维尺寸分析对于优化纸张质量至关重要。由于非木浆的异质性,纤维尺寸很难分析。比较了两种不同的纤维长度分析方法对非木纤维的适用性:光纤长度分析仪(FiberLab)和Bauer-McNett仪器。根据实验,细粉的评估是一个挑战:光学分析仪不提供基于质量的值,而Bauer-McNett分析低估了细粉的量。由于两种方法的局限性,光学方法和Bauer-McNett分类的并行利用被认为是有利的。认为SCAN测试方法中建议的标准分馏时间太短,因此建议使用更长的分馏时间。

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