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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (3): 23-28.doi: 10.3969/j.issn.0253-2417.2016.03.004

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Effects of Penetrating Agent on Properties of Eucalyptus Woodchips Chemi-mechanical Pulping

DENG Yong-jun1,2,1, FANG Gui-gan1, HAN Shan-ming1, JIAO Jian1, LI Hong-bin1, LIANG Fang-min1, LIN Yan1   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2015-05-26 Online:2016-06-25 Published:2016-07-07

Abstract: The effects of penetrating agent on the properties of eucalyptus woodchips chemi-mechanical pulping were studied. The results showed that the performances of different type of penetrants were quite different in the eucalyptus woodchips chemi-mechanical pulping properties. Among these, sodium diethylhexyl sulfosuccinate penetrant exhibited the best performance on improving the impregnation of eucalyptus woodchips. With the dosage of penetrant of 0.4%, the chemical liquor absorption amount and NaOH absorption rate of wood chips respectively increased by 7.34% and 9.97% respectively, if they were compared with the blank groups. At the Canadian standard freeness (CSF) level of 300 mL, with the addition of 0.4% sodium diethylhexyl sulfosuccinate at the impregnation stage, the refining energy consumption and shives content in pulp were reduced by over 9% and 46%, respectively, if they were compared to the control pulp sample. And the tensile strength, burst strength and tear strength were increased by 11.4%, 14.3% and 15.6%, respectively, without losing brightness.

Key words: penetrant, eucalyptus woodchip, pulping properties, chemi-mechanical pulping

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