林产化学与工业2019，Vol.39Issue(1)：95-100,6.DOI:10.3969/j.issn.0253-2417.2019.01.014
微波预处理对桉木化机浆性能的影响
Effect of Microwave Pretreatment on Properties of Eucalyptus Chemical Mechanical Pulp
摘要
Abstract
The effects of microwave on the permeability of eucalyptus were studied by comparing the liquid absorption of wood chips under microwave with that under water bath. Under the same immersion conditions (NaOH 4％ and mass fraction of wood chips 20％) , the absorbed liquid quality of the microwave treated wood chips was significantly higher than that of the water bath. Microwave treatment for 5 minutes could reach the same absorbed liquid quality of 45 minutes in the water bath treatment, greatly improving the impregnation efficiency of wood chips. Then, microwave was used in the pre-impregnation of chemical mechanical pulping. The whiteness of the second stage bleaching pulp obtained by microwave impregnation could reach up to 68.9％ (ISO) , which was 3-6 percentage points higher than that of samples obtained by steaming impregnation. When the freeness of Canada was 305 mL, the tensile strength index could reach 19 N·m/g, the tear index could reach 2.15 mN·m2/g, and the bursting index could reach 0.8 kPa·m2/g. Furthermore, the tensile strength index was increased by 3 N·m/g on average, and the tear index was increased by about 0.2 mN·m2/g, while the bursting index was increased by about 0.1 kPa·m2/g.关键词
微波/桉木/化学机械浆/浸渍Key words
microwave/eucalyptus/chemical mechanical pulp/impregnation分类
化学化工引用本文复制引用
魏录录,邓拥军,韩善明,李红斌,梁龙,房桂干..微波预处理对桉木化机浆性能的影响[J].林产化学与工业,2019,39(1):95-100,6.基金项目
国家重点研发计划项目资助(2017YFD0601005) （2017YFD0601005）
