[1]徐信武,周定国,吴青林.洋麻芯刨花板的试制[J].南京林业大学学报(自然科学版),2005,29(01):015-19.[doi:10.3969/j.jssn.1000-2006.2005.01.004]
 XU Xin-wu,ZHOU Ding-guo,WU Qing-lin.A Laboratory Trial of Manufacturing Kenaf Core Particleboard[J].Journal of Nanjing Forestry University(Natural Science Edition),2005,29(01):015-19.[doi:10.3969/j.jssn.1000-2006.2005.01.004]
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洋麻芯刨花板的试制
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
29
期数:
2005年01期
页码:
015-19
栏目:
研究论文
出版日期:
2005-01-20

文章信息/Info

Title:
A Laboratory Trial of Manufacturing Kenaf Core Particleboard
文章编号:
1000-2006(2005)01-0015-05
作者:
徐信武1周定国1吴青林2
1. 南京林业大学木材工业学院, 江苏 南京 2l0037; 2. 路易斯安那州立大学农业研究中心, 巴吞鲁日 美国 70803
Author(s):
XU Xin-wu1 ZHOU Ding-guo1 WU Qing-lin2
1. College of Wood Science and Technology Nanjing Forestry University, Nanjing 210037, China; 2. Louisiana State University Agricultural Center, Baton Rouge, 70803 U. S. A
关键词:
洋麻 刨花板 异氰酸酯 酚醛树脂
Keywords:
Kenaf Particleboard MDI PF
分类号:
TS61
DOI:
10.3969/j.jssn.1000-2006.2005.01.004
文献标志码:
A
摘要:
<正>对用分维数表示的杨树冠层特征与生长量之间的关系进行研究。参试的28个杨树无性系4年生时的生长量存在显著的差异;用盒维数法表示的分维数(FD9.)在无性系间也存在显著的差异,而用双表面积法估算的树冠分维数(FDa、FDv)在无性系间差异未达显著水平。相关分析表明:胸径与树高之问相关显著;而除用盒维数法表示的树冠分维数(FDb99)与胸径生长相关达极显著水平外,其他情况树冠分维数与生长相关均未达显著性水平,表明并非叶面积越大生长量越大;树冠分维数与胸径生长相关明显大于与树高生长的相关。
Abstract:
Kenaf(Hibiscus cannabinus) is a warm weather and fast growing fiber crop, which is often used in paper making. In this study, single-and three-layer kenaf core particleboards (KPB) were made with polymeric methylene diphenyl diisocyanate (pMDI, 3%) and phenol formaldehyde (PF,6%) resins. Density levels were specified as 0. 25,0. 40,0. 55,0. 70 and 0. 85 g/cm3. Bending modulus (MOE), bending strength (MOR), internal bond (IB) strength, thickness swelling (TS), linear expansion (LE),and vertical density profile (VDP) were assessed. The data were compared with properties specified in ANSI/A 208. 1 for woodbased particleboard (WPB). It was shown that kenaf core could be made into standard-satisfied particleboards. Density and resin content were two primary factors deciding the performances of KPB. KPB denser than O. 70 g/cm3 and with 6% PF met the standard specifications. KPB with 3% pMDI failed to achieve the standard unless slightly higher resin content and/or density were used. TS and LE of single-layer KPB decreased but TS rate increased with increased density. Single-layer KPB had a dissymmetric structure in thickness direction. Threelayer construction improved MOE, MOR and IB strengths,and effectively avoided the unbalanced structure of sing-layer KPB in thickness direction. KPB with a 5 : 5 surface-to-core ratio had the best comprehensive performances.

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更新日期/Last Update: 2013-05-20