南京林业大学学报(自然科学版) ›› 2014, Vol. 38 ›› Issue (02): 31-35.doi: 10.3969/j.issn.1000-2006.2014.02.007

• 研究论文 • 上一篇    下一篇

热处理对东非黑黄檀物理力学性能的影响

范 敏,倪欧琪*,俞珍权,张凯铭,吕兆坤   

  1. 南京理工大学化工学院,江苏 南京 210094
  • 出版日期:2014-03-10 发布日期:2014-03-10
  • 基金资助:
    收稿日期:2013-03-04 修回日期:2013-09-03
    第一作者:范敏,硕士生。*通信作者:倪欧琪,研究员。E-mail: niouqimmm@163.com。
    引文格式:范敏,倪欧琪,俞珍权,等. 热处理对东非黑黄檀物理力学性能的影响[J]. 南京林业大学学报:自然科学版,2014,38(2):31-35.

Effect of thermal treatment on the physical and mechanics properties of Dalbergia melanoxylon wood

FAN Min, NI Ouqi*, YU Zhenquan, ZHANG Kaiming, LYU Zhaokun   

  1. School of Chemical Engineering,Nanjing University of Science and Technology, Nanjing 210094, China
  • Online:2014-03-10 Published:2014-03-10

摘要: 以甲基硅油为热处理介质对东非黑黄檀进行热处理,研究了热处理前后红木的吸水率、体积膨胀率、抗压强度和物质结构的变化。实验结果表明:热处理可显著降低红木的吸湿性及体积膨胀率,提高尺寸稳定性和抗压强度。随着热处理温度的升高,吸水率呈先下降后上升的趋势,体积膨胀率呈先降低后升高的趋势; 且随着热处理时间的延长,热处理材的体积膨胀率先降低后升高。当热处理温度为160 ℃,热处理时间4 h时,红木的物理力学性能显著提高,吸水率降低82.0%,体积膨胀率降低92.2%,抗压强度提高44.1%。

Abstract: In this paper, methyl silicone oil was employed as the thermal treatment medium to commit corresponding thermal treatment for the Dalbergia melanoxylon wood. Variations of moisture absorption rate, volume swelling rate, compressive strength and structure of the rose wood were then studied before and after the thermal treatment. In this research, with the temperature of thermal increasing, the moisture absorption rate displayed a tendency of reduction first and then the value increased instead. Similarly, with the time of thermal treatment extended, the volume expansion rate enjoyed a gradual increase after some degree of reduction at first. The results indicated that thermal treatment could significantly reduce the moisture absorption and volume swelling rate, and at the same time enhance dimensional stability and compressive strength in our experiment. Upon optimization, physical and mechanics qualities of the rosewood enjoy the greatest improvements when the thermal treatment temperature was set at 160 ℃ for 4 hours. Besides, the compressive strength increased by 44.1%, the moisture absorption rate and the volume swelling rate decreased by 82.0% and 92.2%, respectively.

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