| 高亚萍,周霞.阻燃与未阻燃装饰装修木材在不同氧浓度下的热分析[J].火灾科学,2007,16(4):214-219. |
| 阻燃与未阻燃装饰装修木材在不同氧浓度下的热分析 |
| Thermal Analysis of Flame-Retardant and Non-Flame-Retardant Decorative Woods under Different Oxygen Concentration |
| 投稿时间：2007-08-20 修订日期：2007-10-15 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目: |
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| 中文关键词: 木材 TGA 热解 动力学 |
| 英文关键词:wood TGA pyrolysis kinetics |
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| 中文摘要: |
| 利用热重分析仪对常见木质装饰装修材料白杨、白桦、红松以及这三种材料的阻燃品,在不同氧浓度条件下进行了热重分析(TGA)实验,通过对失重(TG)曲线、失重速率(DTG)曲线的分析,深入探讨了氧气体积分数对样品热解过程的影响。结果表明:对三种天然木材样品而言,氧浓度增大,样品的TG曲线左移。氧浓度对阻燃样品热解失重曲线的影响较小。热解过程用简单的动力学模型进行了模拟,确定了热解主反应段的动力学参数、表观活化能和频率因子,得到了各阶段的动力学方程。 |
| 英文摘要: |
| The characteristics of combustion and pyrolysis for decorative woods(poplar,birch,redpine and their flame retardant samples) is studied by thermogravimetric analysis technology under different oxygen concentration.By means of TG-DTG analysis,the effect of oxygen concentration on the thermal analysis is researched deeply.The results show that the TG curve moves left with the increase of oxygen concentration to the three kinds of natural wood samples.There are no obvious regulations for the pyrolysis of retardant samples with increase of oxygen concentration.Simple kinetic model is adopted to simulate the whole course of pyrolysis.Kinetic parameters(apparent activation energy,pre-exponential factor) and specific kinetic equation of two stages are calculated. |
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