人造板吸水过程的 TD-NMR 动态研究

周云洁; 张明辉*; 李新宇; 邵朱伟

doi:10.11938/cjmr20150411

波谱学杂志 >

2015 , Vol. 32 >Issue 4: 661 - 669

DOI: https://doi.org/10.11938/cjmr20150411

低场磁共振技术与应用专栏

人造板吸水过程的 TD-NMR 动态研究

周云洁 ,
张明辉* ,
李新宇 ,
邵朱伟

展开

内蒙古农业大学材料科学与艺术设计学院，内蒙古呼和浩特 010018

周云洁(1989-)，女，黑龙江抚远人，硕士研究生，材料加工工程专业． *通讯联系人：张明辉，电话： 15849376426， E-mail： zhangmh_email@aliyun.com.

收稿日期: 2014-12-24

修回日期: 2015-10-23

网络出版日期: 2015-12-05

基金资助

国家自然科学基金资助项目(30800866, 31160141)

收起

Water Absorption in Wood-Based Panel Observed by Dynamic Time-Domain Nuclear Magnetic Resonance Spectroscopy

ZHOU Yun-jie ,
ZHANG Ming-hui* ,
LI Xin-yu ,
SHAO Zhu-wei

Expand

College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China

*Corresponding author： ZHANG Ming-hui, Tel: +86-15849376426, E-mail: zhangmh_email@aliyun.com

Received date: 2014-12-24

Revised date: 2015-10-23

Online published: 2015-12-05

Supported by

国家自然科学基金资助项目(30800866, 31160141)

Fold

摘要

利用时域核磁共振(TD-NMR)技术，为研究人造板和水分的关系提供新方法．该文通过研究胶合板(Plywood)、刨花板(Particle board)、中密度纤维板(Medium Density Fiberboard) 3 种常用人造板吸水过程中水分的自由感应衰减(FID)信号的变化，得出传统称重法得到的吸水率与吸水过程中测得的 FID 信号高度线性相关， 24 h 吸水率由大到小依次为胶合板>刨花板>中密度纤维板．通过 3 种人造板 24 h 吸水过程中自旋-自旋弛豫时间(T₂)大小及分布的实验数据，分析了吸水过程中人造板中水分的状态．实验结果证实了TD-NMR 是研究人造板与水分的关系的一个有效手段．

关键词： 时域核磁共振(TD-NMR); 吸水率; 自由感应衰减; 自旋-自旋弛豫时间; 人造板

本文引用格式

周云洁 , 张明辉* , 李新宇 , 邵朱伟 . 人造板吸水过程的 TD-NMR 动态研究
[J]. 波谱学杂志, 2015 , 32(4) : 661 -669 . DOI: 10.11938/cjmr20150411

Abstract

Time-domain nuclear magnetic resonance (TD-NMR) technology may provide a new method to study water absorption in wood-based panels. We measured changes of free induction decay (FID) signal of water in plywood, particle board and medium density fiberboard after a 24-hour soaking process, and the results were correlated to water contents calculated with the traditional weighing method. The amount of water absorption was plywood > particleboard > medium density fiberboard. The state of water in the panels was analyzed by spin-spin relaxation time (T₂) measurements. The result suggested that NMR is an effective tool to study the relationship between wood-based panels and water.

Key words： time-domain nuclear magnetic resonance; water absorption; free induction decay; spin-spin relaxation time; wood-based panel

参考文献

[1] Geng Zhu-feng(耿珠峰), Ouyang Jie(欧阳捷), Deng Zhi-wei(邓志威), et al. NMR application in selective separation for natural products and their structural investigation(NMR在天然产物选择性分离与结构研究中应用)[J]. Chinese J Magn Reson(波谱学杂志), 2009, 26(3): 424－436.

[2] Wang Zhi-zhan(王志战), Xu Xiao-qiong(许小琼). Quantitative evaluation of reservoir separation with MR-ML technology (利用核磁共振录井技术定量评价储层的分选性)[J]. Chinese J Magn Reson(波谱学杂志), 2010, 27(2): 214－220.

[3] Araujo C D, Mackay A L, Hailey J R T, et al. Proton magnetic resonance techniques for characterization of water in wood: application to white spruce[J]. Wood Sci Technol. 1992, 26(2): 101－113.

[4] Merela M, Oven P, Sersa I, et al. A single point NMR method for an instantaneous determination of the moisture content of wood[J]. Holzforschung, 2009, 63(3): 348－351.

[5] Sharp A R, Riggin M T, Kaiser R, et al. Determination of moisture content of wood by pulsed nuclear magnetic resonance[J]. Wood Fiber, 1978, 10(2): 74－81.

[6] Nanassy A J. Use of wide line NMR for measurement of moisture content in wood[J]. Wood Sci, 1973, 5(3): 187－193.

[7] Han Jian(韩健), Wang Chuan-yao(王传耀), Yang Qing(杨庆). Surface Finishing Technology of Wood-Based Panal(人造板表面装饰工艺学)[M]. Beijing(北京): China Forestry Publishing House(中国林业出版社), 2014.

[8] Yang Xu-dong(杨旭东), Li Jun-kui (李俊魁). Consideration and suggestion on solving timber shortage problems in China (解决中国木材短缺问题的思考和建议)[J]. Journal of Beijing Bores try University(北京林业大学学报), 2009, 8(3): 105－108.

[9] Yu De-xin(余德新), Fan Hao-zai(范毜仔). Water absorption and hygroscopicity study of fibreboard(纤维板吸水性和吸湿性的研究)[J]. Building Artificial Boards(建筑人造板), 1990, 1: 26－29.

[10] Yu De-xin(余德新), Song Yi-ran(宋一然), Fan Hao-zai(范毜仔), et al. Effect of water absorption and hygroscopicity of particleboard on mechanical properties(刨花板吸水和吸湿特征及其对力学性能的影响)[J]. Journal of central south forestry college(中南林学院学报), 1992, 12(2): 178－183.

[11] Cai L P, Shang D K. Modelling of the moisture transfer process in particleboards[J]. Holz Als Roh-Und Werkstoff, 1992, 50(10): 395－399.

[12] Cai L P, Wang F H. Steady and unsteady state moisture movement in particleboards[J]. Holz Als Roh-Und Werkstoff, 1994, 52(5): 304－305.

[13] National Technical Committee on Wood-based Panels Standardization of China(全国人造板标准化技术委员会). Test Methods of Evaluating the Properties of Wood-Based Panels and Surface Decorated Wood-Based Panels(人造板及饰面人造板理化性能试验方法): GB/T 17657-1999[S]. Beijing(北京): (中国标准出版社), 1999.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献