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    • 16. 发明申请
    • CELLULOSE FIBERS FOR CEMENT REINFORCEMENT
    • 用于水泥加固的纤维素纤维
    • WO1984003275A1
    • 1984-08-30
    • PCT/GB1984000053
    • 1984-02-22
    • COURTAULDS PLCBLACKIE, Merrick, StuartPOYNTON, David, John
    • COURTAULDS PLC
    • C04B31/36
    • C04B18/28Y02W30/97Y10T428/2971
    • Cellulose fibers such as wood pulp are made more suitable for reinforcement of cement products by a treatment which reduces their swelling in aqueous and alkaline mediums. The fibers are dispersed in water, allowed to swell, and impregnated with a solution of a titanium and/or zirconium chelate compound. After drying, the fibers are heated to react the chelate compound(s) with the hydroxyl on the cellulose fibers, preferably to produce cross-linking between hydroxyl group residues. The treated fibers are more stable in cement media, and, despite their increased hydrophobicity, are dispersible in cement slurries to give good web formation in the manufacture of cement products such as sheet. They impart improved flexural strength and modulus to cement products compared with untreated cellulose reinforcing fibers.
    • 纤维素纤维如木浆制成更适于通过减少其在水性和碱性介质中的溶胀的处理来增强水泥制品。 将纤维分散在水中,使其溶胀,并用钛和/或锆螯合物的溶液浸渍。 干燥后,加热纤维使螯合化合物与纤维素纤维上的羟基反应,优选在羟基残基之间产生交联。 经处理的纤维在水泥介质中更稳定,并且尽管它们的疏水性增加,但是可以在水泥浆中分散,以在水泥制品例如片材的制造中形成良好的纤维网。 与未处理的纤维素增强纤维相比,它们赋予水泥产品改善的弯曲强度和模量。