改良杂交尾细桉材性特征随树龄变化及APMP制浆性能分析  

Pulpwood Properties of Improved Hybrid Eucalyptus urophylla × E. tereticornis with Different Tree-age and Analysis of APMP Pulping Properties

作　　者：梁芳敏[1,2,3,4] 房桂干[1,2,3,4] 邓拥军[1,2,3,4] 韩善明[1,2,3,4] 焦健[1,2,3,4] 李红斌[1,2,3,4] 彭仕尧[5,6] 徐建民[5] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]中国林业科学研究院热带林业研究所,广东广州510520 [6]国营雷州林业局,广东遂溪524348

出　　处：《造纸科学与技术》2013年第5期1-6,42,共7页Paper Science & Technology

基　　金：国家林业公益性行业科研专项"桉树生态经营及产业升级关键技术研究"(201104003-07)

摘　　要：本文主要研究了人工改良杂交尾细桉LH1和天然杂交尾细桉U6的基本密度、化学组分、纤维形态随树龄的变化趋势及APMP制浆性能分析。结果表明，两种桉木的基本密度、综纤维素含量、纤维长度、纤维宽度及长宽比随树龄呈增加趋势，灰分含量、1％NaOH抽出物含量随树龄呈下降趋势。两种桉木纤维长度在0．6—0．8mm之间，长宽比在34．4～42．4之间，小于45，属于短纤维原料。改良后LH1的基本密度、综纤维素含量、长宽比高于天然杂交尾细桉U6，利于制浆造纸。经相同条件制浆漂白后，250mL游离度的纸浆，LH1的抗张指数提高42．3％，耐破指数提高87．5％，撕裂指数提高49．5％。With two kinds clones of eucalyptus as the experimental materials, artificial cross LH1 and free-pollina-tion U6, basic density, fiber morphology and chemical compositions were determined and analyzed to study the relatioship between wood properties and tree age. The results show that, with the increasing of tree age, basic den-sity, holocellulose content, fiber length, fiber wi＇dth and length-width ratio rise while ash and 1% NaOH extractives drop. The fiber length of U6 and LHlis about 0.6-0.8mm, Length-width ratio is about 34.4-42.4, lower than 45, which belong to short fiber raw material. Basic density, holocellulose content and length-width ratio of improved LH1 are higher than those of U6, which are better for pulping. Compared with U6, physical strength properties of improved LH1 are higher, tensile index by 42.3% , burst index by 87.5% , and tear index by 49.5% , when the comparison is made at a freeness value of 250mL, with the same refining conditions and bleaching conditions.

关 键 词：桉木 化学组分 纤维形态 APMP 制浆性能 

分 类 号：TS749.1[轻工技术与工程—制浆造纸工程]