布吕蒂亚松硫酸盐浆、聚苯乙烯浆、蒽醌硫酸盐浆和硼氢化钠硫酸盐浆的比较。
A comparison of kraft, PS, kraft-AQ and kraft-NaBH4 pulps of Brutia pine.
作者信息
Copur Y, Tozluoglu A
机构信息
Faculty of Forestry, Department of Forest Products Engineering, Duzce University, Duzce, Turkey.
出版信息
Bioresour Technol. 2008 Mar;99(5):909-13. doi: 10.1016/j.biortech.2007.04.015. Epub 2007 May 24.
The aim of this work was to study the effect of adding PS, AQ and NaBH(4) into kraft pulping with special attention given to NaBH(4). Kraft, kraft-AQ, PS, and kraft-NaBH(4) pulps were produced under the same cooking conditions and the pulps produced were compared in terms of pulp and paper properties. Kraft method was modified by adding 0.1% AQ, 4% PS and 2% and 4% NaBH(4) and the resultant pulps displayed an increase in pulp yield and reduction in both kappa number and screening rejects. On the other hand, there observed an increase in both pulp yield and kappa number when the kraft was modified to PS method. The benefits of NaBH(4) addition into kraft pulping was a significant reduction in kappa number and screening rejects and a significant increase in pulp yield. The most notable outcome of NaBH(4) was 66.6% increase in pulp brightness when 4% NaBH(4) was added into kraft pulping. Of unrefined pulps, unrefined kraft pulp displayed the highest strength of pulp, which is described as tear index at a constant tensile index. Of refined pulps, kraft-AQ showed the highest pulp strength when refined to 6000 and 12,000 revs in PFI mill.
这项工作的目的是研究在硫酸盐法制浆中添加聚苯乙烯（PS）、蒽醌（AQ）和硼氢化钠（NaBH₄）的效果，尤其关注硼氢化钠。在相同的蒸煮条件下制备了硫酸盐法、硫酸盐 - AQ法、PS法和硫酸盐 - NaBH₄法的纸浆，并对所制备的纸浆的纸浆和纸张性能进行了比较。通过添加0.1%的AQ、4%的PS以及2%和4%的NaBH₄对硫酸盐法进行了改进，所得纸浆的纸浆得率提高，卡伯值和筛选废渣均减少。另一方面，当将硫酸盐法改进为PS法时，纸浆得率和卡伯值均有所增加。在硫酸盐法制浆中添加NaBH₄的好处是卡伯值和筛选废渣显著降低，纸浆得率显著提高。当在硫酸盐法制浆中添加4%的NaBH₄时，最显著的结果是纸浆亮度提高了66.6%。在未精制的纸浆中，未精制的硫酸盐法纸浆表现出最高的纸浆强度，在恒定拉伸指数下以撕裂指数来描述。在精制纸浆中，当在PFI磨中精制至6000转和12000转时，硫酸盐 - AQ法纸浆表现出最高的纸浆强度。
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