当前位置: 首页 > 文章 > 利用核磁共振技术研究热处理中密度纤维板的吸水性 安徽农业大学学报 2018,45 (4) 645-649
Position: Home > Articles > Water adsorption of heat-treatment medium density fiberboard studied by TD-NMR technique Journal of Anhui Agricultural University 2018,45 (4) 645-649

利用核磁共振技术研究热处理中密度纤维板的吸水性

作  者:
陶德亨;李新宇;刘文静;郎真
关键词:
中密度纤维板;吸水;时域核磁共振;横向弛豫时间
摘  要:
基于时域核磁共振技术,对3个热处理温度(120、170和220℃)下MDF(中密度纤维板)的吸水性进行了研究,并利用X射线衍射技术,辅助揭示不同样品吸水性差异的机理。结果表明,170℃处理MDF吸水过程中吸水率、自由水和结合水含量最低;220℃热处理MDF的纤维素结晶区被破坏,原有的空隙结构被改变,吸水率、自由水和结合水含量最高。
译  名:
Water adsorption of heat-treatment medium density fiberboard studied by TD-NMR technique
作  者:
TAO Deheng;LI Xinyu;LIU Wenjing;LANG Zhen;College of Material Science and Art Design, Inner Mongolia Agricultural University;
关键词:
MDF;;water adsorption;;TD-NMR;;T2
摘  要:
In this study, water absorption of MDF(medium density fiberboard) treated with high temperatures(120℃, 170℃ and 220℃) was studied using the time-domain nuclear magnetic resonance technique. The x-ray diffraction technique was used to reveal the effect mechanism of heat-treatment on the water absorption, and the results showed that the contents of free water and bound water of MDF treated at 170 ℃were the lowest, which meant 170 was the ideal heat℃-temperature in this experiment. In addition, the crystal and pore structures of MDF treated at 220 were changed, and their contents of free water and bound water were the highest.

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