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    • 7. 发明公开
    • HIGH EFFICIENCY PRODUCTION OF NANOFIBRILLATED CELLULOSE
    • HOCHEFFIZIENTE HERSTELLUNG VON NANOFIBRILLIERTER纤维素
    • EP3140454A1
    • 2017-03-15
    • EP15789871.9
    • 2015-05-06
    • University of Maine System Board of Trustees
    • BILODEAU, Michael A.PARADIS, Mark A.
    • D21D1/30
    • A scalable, energy efficient process for preparing cellulose nanofibers employs treating the cellulosic material with a first mechanical refiner with plates having a configuration of blades separated by grooves, and subsequently treating the material with a second mechanical refiner with plates having a configuration of blades separated by grooves different than the first refiner. The plate configurations and treatment operations are selected such that the first refiner produces a first specific edge loading (SEL) that is greater than the SEL of the second refiner, by as much as 2-50 fold. An exemplary high first SEL may be in the range of 1.5 to 8 J/m. Paper products made with about 2% to about 30% cellulose nanofibers having a length from about 0.2 mm to about 0.5 mm, preferably from 0.2 mm to about 0.4 mm have improved properties.
    • 公开了一种用于制备纤维素纳米纤维的可伸缩的节能方法。 该方法采用第一机械磨浆机处理纤维素材料,其中板材具有由槽分隔的叶片的构型,随后用具有不同于第一精磨机的槽分隔的叶片构型的第二机械精磨机处理该材料。 选择板的配置和处理操作使得第一精磨机产生大于第二精磨机的SEL的第一SEL高达2-50倍。 示例性的高第一SEL可以在1.5至8J / m的范围内。 用大约2%至大约30%的长度为约0.2mm至约0.5mm,优选为0.2mm至约0.4mm的纤维素纳米纤维制成的纸制品具有改进的性能。