渗透剂对桉木化学机械法制浆性能的影响

研究了不同渗透剂对桉木化学机械法制浆性能的影响,结果表明:不同类型的渗透剂对桉木浸渍性能的影响差异较大,其中磺化琥珀酸二辛酯钠盐类渗透剂S4对桉木浸渍性能改善程度最高,渗透剂用量为0.4%时,可以使木片的吸液量和Na OH吸收率分别比对照样提高7.34%和9.97%。渗透剂对桉木化学机械浆的性能影响如下:浸渍段添加0.4%渗透剂S4,制取加拿大游离度(CSF)为300 m L的纸浆,可以使磨浆电耗降低10%以上,浆中的细小组分减少9个百分点以上,纤维束减少46%;纸浆的抗张强度、耐破强度及撕裂强度均有不同程度的提高,可分别提高11.4%、14.3%和15.6%,但对纸浆的白度无明显影响。

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

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.