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林业科学 ›› 1996, Vol. 32 ›› Issue (4): 361-365.

• 论文及研究报告 • 上一篇    下一篇

刚果12号桉的木材性质及制浆试验

蔡则谟   

  1. 中国林业科学研究院热带林业研究所 广州 510520
  • 收稿日期:1995-06-05 出版日期:1996-07-25 发布日期:1996-07-25

WOOD PROPERTIES AND PULPING EXPERIMENT OF EUCALYPTUS ABL NO.12

Zemo Cai   

  1. Institute of Tropical Forestry, CAF Guangzhou 510520
  • Received:1995-06-05 Online:1996-07-25 Published:1996-07-25

摘要:

进行了5龄刚果12号桉的木材性质和制浆试验。以胸高圆盘加权平均数为单元, 平均导管直径90μm, 管孔数16N/mm2; 射线数15N/mm; 纤维长度0.868mm, 壁厚2.9μm; 组织比量(%):导管14.0, 薄壁组织29.8, 纤维56.2;基本比重0.577。研究了这些性质的径向变异性。木材强度中等。综纤维素含量77.62%, 木素含量25.09%。烧碱-蒽醌法制浆试验表明, 容易成浆, 粗浆得率46.92%, 漂浆白度73.8%, 纸片成型性良好, 耐破指数4.58kPa·m2/g, 撕裂指数7.53mN·m2/g。

关键词: 刚果12号桉, 木材性质, 制浆试验

Abstract:

The tests of wood properties and pulping experiment were carries out with the 5-year-old Eucalyptus ABL No.12 grown in Guangdong province. With the weighted mean of the BH disc as the unit, the average values of the following properties were: 90μm of tangential diameter of vessels, 16N/mm2 of pores number, 15N/mm of rays number, 0.868mm of fibre length, 2.9 μm of fibre wall thickness, 14.0 of vessels percentage, 29.8 of parenchyma percentage, 56.2 of fibre percentage, and 0.577 of basic specific gravity. The radial variation of these properties was investigated. The wood belonged to a medium class of strength, and contained 77.62% of holocellulose and 25.09% of lignin. A pulping experiment of alkali-AQ process showed that it was easy to pulp, with 46.92% of yield of coarse pulp and 73.8% of bleaching degree, and the sheet formation was good, with 4.58kPa. m2/g of burst index and 7.53mN. m2/g of tear index.

Key words: Eucalyptus ABL No.12, Wood property, Pulping experiment