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    • 2. 发明申请
    • HIGH ASPECT RATIO CELLULOSE NANOFILAMENTS AND METHOD FOR THEIR PRODUCTION
    • 高比例纤维素纳米纤维及其生产方法
    • WO2012097446A1
    • 2012-07-26
    • PCT/CA2012/000060
    • 2012-01-19
    • FPINNOVATIONSHUA, XujunLALEG, MakhloufMILES, KeithAMIRI, RezaETTALEB, LahoucineDORRIS, Gilles
    • HUA, XujunLALEG, MakhloufMILES, KeithAMIRI, RezaETTALEB, LahoucineDORRIS, Gilles
    • D21D1/30D01B9/00D21B1/38D21H11/16
    • D21D1/30D21D1/20D21H11/16D21H11/18Y10T428/298
    • A novel method is disclosed to produce on a commercial scale, high aspect ratio cellulose nanofilaments (CNF) from natural lignocellulosic fibers. The method consists of a multi-pass high consistency refining (HCR) of chemical or mechanical fibers using specific combinations of refining intensity and specific energy. The CNF produced by this invention represents a mixture of fine filaments with widths in the submicron and lengths from tens of micrometers to few millimeters. The resultant product is made of a population of free filaments and filaments bound to the fiber core from which they were produced. The proportion of free and bound filaments is governed in large part by total specific energy applied to the pulp in the refiner. These CNF products differ from other cellulose fibrillar materials by their higher aspect ratio and the preserved degree of polymerization (DP) of cellulose. The CNF products made by this invention are excellent additives for the reinforcement of paper, tissue, paperboard and packaging products, plastic composite materials and coating formulations. They display exceptional strengthening power for never-dried paper webs.
    • 公开了一种以商业规模生产来自天然木质纤维素纤维的高纵横比纤维素纳米丝(CNF)的新方法。 该方法由使用精炼强度和比能量的特定组合的化学或机械纤维的多遍高浓度精炼(HCR)组成。 本发明生产的CNF表示亚微米宽度为几十微米至几毫米的细丝的混合物。 所得产物由自由长丝和长丝的群体制成,纤维芯与其生成纤维核。 游离和结合长丝的比例在很大程度上由施加在精炼机中的纸浆的总比能来决定。 这些CNF产品与其它纤维素纤维材料的高宽比和纤维素的保留聚合度(DP)不同。 本发明制备的CNF产品是增强纸张,纸巾,纸板和包装产品,塑料复合材料和涂料配方的优良添加剂。 它们显示出非常干燥的纸幅的强化力。