作　　者： ; ; ; ;

机构地区： 陕西科技大学

出　　处： 《纸和造纸》 2011年第3期4-6,共3页

摘　　要： 以一段磨后杨木PRC-APMP浆为原料,采用ZSP-300磨浆机在25%和4.5%的浆浓下磨浆,探讨二段高浓磨浆和低浓磨浆对成纸性能的影响。结果表明:相比于二段高浓磨浆,二段低浓磨浆纤维的长度较短,细小组分含量较多,浆料中纤维束的含量较低。同时,对成纸松厚度与强度变化具有显著的不同步性。当游离度为480mL,相比于高浓磨浆,低浓磨浆成纸的松厚度下降4%,而成纸的抗张指数和内结合强度分别提高18%和12%。可见,采用二段低浓磨浆,可在略微降低成纸松厚度损失的同时,显著提高成纸的抗张强度和内结合强度,缓和化机浆应用时成纸松厚度与强度的矛盾。另一方面,二段低浓磨浆能较好地保留杨木PRC-APMP浆成纸的光学性能。 At the secondary stage refining, paper properties of high consistency （25%） and low consistency （4.5%） refining were studied with the raw material of aspen PRC-APMP obtained after the first stage refining.The results showed that at the secondary stage of low consistency refining, fiber length was shorter and the content of fines fraction was larger. At the same time, the content of shives was lower compared to the high consistency refining. In addition, the changes of paper bulk and strengths properties were asynchronous dramatically. At the freeness of 480mL, paper bulk decreased by 4% while the tensile index and internal bond strength were increased 18% and 12% respectively. erefore, the balance between paper bulk and strength was obtained by slightly reducing the loss of paper bulk and obviously improving the tensile index and internal bond strength at the secondary stage of low consistency refining. Meanwhile, optical properties of aspen paper were better kept by low consistency refining.

关 键 词： 杨木 低浓磨浆 高浓磨浆 强度 松厚度

领　　域： [轻工技术与工程]