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该文通过检测有聚合絮凝剂(CPAM)存在的条件下,沉淀碳酸钙(PCC)和研磨碳酸钙(GCC)在桉木浆一级细小纤维、二级细小纤维和长纤维组分表面的吸附量研究了填料在化学浆细小纤维表面的留着情况。结果表明:(1)无论絮凝剂存在与否,PCC和GCC更多地被吸附在一级和二级细小组分表面而不是长纤维组分表面;(2)絮凝剂不存在时,PCC在纤维组分和细小纤维组分上的吸附符合Langmuir吸附动力学,这表明吸附过程是随着填料的吸附与脱吸以动态平衡的形式进行的,并且填料的最大可能吸附量是在纤维上形成一层单分子层微粒覆盖;(3)在絮凝剂用量较低的情况下,细小纤维组分比纤维组分能够吸附更多的填料。研究结果揭示了化学浆不同细小纤维是如何影响碳酸钙填料留着的。
In this paper, the adsorption of precipitated calcium carbonate (PCC) and ground calcium carbonate (GCC) on the surface of eucalyptus pulp primary fines, secondary fines and long fiber components was investigated by detecting the presence of polymeric flocculant (CPAM) The amount of filler on the surface of the chemical fiber fines retained. The results show that: (1) PCC and GCC are more adsorbed on the surface of the primary and secondary fine components than on the surface of the long fiber, irrespective of the flocculant; (2) In the absence of flocculants, The adsorption on the fiber component and the finer fiber component is in accordance with the Langmuir adsorption kinetics, indicating that the adsorption process is carried out in a dynamically balanced manner with the adsorption and desorption of the filler, and that the maximum possible adsorption amount of the filler is formed on the fiber A layer of monolayer particles covered; (3) in the case of lower flocculant, the finer fiber component than the fiber component can absorb more filler. The results of the study reveal how different fines in the chemical pulp affect the retention of the calcium carbonate filler.