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P-RC APMP pulpING OF THE TRIPLOID OF POPULUS TOMENTOSA

天津科技大学学报 2004年第S1期 36-41页

作者： fangong kong1,2, jiachuan chen2, huaiyu zhan1, guihua yang2,zhaocheng li21. state key laboratory of pulp & paper engineering, south china university of technology, guangzhou, 510640 2. Shandong Institute of light Industry, Jinan, 250100 3. Shandong Quanlin paper Co. Ltd, Gaotang, 252800

The technology parameters of P-RC APMP process of the triploid of populus tomentosa and the comparison of P-RC APMP with one and two stage of pretreatment were investigated in this paper. The results showed that in the chemical pretreatment the charge of NaOH and H2O2 were the main factors that affected the pulp qualities. The charge of NaOH, especially in the first stage of chemical pretreatment, was related to pulp strength. The charge of H2O2 contributed much to brightness of the resultant pulp. In addition, the ratio of NaOH to H2O2 and the distribution of chemicals in the first and second stage of impregnation also affected the pulp qualities. The comparison of one-stage P-RC APMP pulp and two-stage P-RC APMP pulp illustrated that the two-stage pulp had better brightness and breaking length, lower light scatting coefficient and opacity

关键词： APMP In P-RC APMP pulpING OF THE TRIPLOID OF POPULUS TOMENTOSA NaOH RC

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EFFECT OF NaOH CHARGE ON FIBER CHARACTERISTICS OF P-RC APMP pulp

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天津科技大学学报 2004年第S1期 31-35页

作者： fangong kong1,2,jiachuan chen2, guihua yang2,zhaocheng li2, huaiyu zhan1.1.state key Lab. Of pulp & paper engineering, south china university of technology, guangzhou, 510640 2.Shandong Institute of light Industry, Jinan, 250100

Fiber screen analysis, fiber quality analysis and SEM observation were used to investigate the effects of NaOH charge on fiber characteristics in Triploid Populus Tomentosa P-RC APMP pulping in this paper. The results showed that increasing NaOH charge in P-RC APMP process could reduce energy consumption and fines percent, increase the mean fiber length and long fiber percent and make the curl index and kink index of fiber ascend. The results from SEM observation illustrated that the fiber with high NaOH charge had higher softness degree, better cutting resistant ability and better inter-fiber bonding ability. With increasing of NaOH charge, the surface of handsheets became more and more smooth, and there were less and less gaps and holes on the paper surface.

关键词： NaOH APMP EFFECT OF NaOH CHARGE ON FIBER CHARACTERISTICS OF P-RC APMP pulp RC

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