| 高温高压过热蒸汽处理木材的热稳定性 |
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| 引用本文： | 齐华春,刘一星,程万里. 高温高压过热蒸汽处理木材的热稳定性[J]. 东北林业大学学报, 2009, 37(9) |
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| 作者姓名： | 齐华春 刘一星 程万里 |
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| 作者单位： | 生物质材料科学与技术教育部重点实验室(东北林业大学)哈尔滨,150040 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 以日本柳杉(Cryptomeria japonica D. Don)为试材,采用差热分析仪(附带DSC测试配置)对经温度为80、120、160、180℃,相对湿度分别为0、40%、60%、100%(80℃时最大相对湿度为80%)过热蒸汽处理后的试件进行了测试,探讨不同温度、不同相对湿度条件对木材热稳定性的影响.结果表明:高温高压过热蒸汽处理后的木材与未处理材的热分解机理基本相同;处理木材的温度越高,木材热分解所需温度也随之增高;高温高压过热蒸汽处理材的热稳定性好于未处理材,并随处理温度的升高而提高;相同温度条件下,相对湿度较低时处理的木材,其热稳定性好于相对湿度较高时处理的木材;相同相对湿度条件下,高温处理的木材,其热稳定性好于低温处理的木材.
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| 关 键 词： | 高温高压 过热蒸汽 木材干燥 热稳定性 |
Thermal Stability of Superheated Steam-treated Wood under High Temperature and Pressure |
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| Qi Huachun,Liu Yixing,Cheng Wanli. Thermal Stability of Superheated Steam-treated Wood under High Temperature and Pressure[J]. Journal of Northeast Forestry University, 2009, 37(9) |
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| Authors: | Qi Huachun Liu Yixing Cheng Wanli |
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| Affiliation: | Qi Huachun,Liu Yixing,Cheng Wanli(Key Laboratory of Bio-based Material Science , Technology,Ministry of Education(Northeast Forestry University),Harbin 150040,P.R.China) |
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| Abstract: | Specimens from Japanese sugi(Cryptomeria japonica D.Don)wood were treated with superheated steam at temperatures of 80,120,160,180 degrees C and relative humidity of 0,40 percent,60 percent,100 percent(the highest relative humidity at 80 degrees C was 80 percent).The effects of temperature and relative humidity on the thermal stability of wood were examined by differential scanning calorimetry.Results showed that the thermal decomposition mechanism of wood treated with superheated steam under high temperatu... |
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| Keywords: | High temperature and pressure Superheated steam Wood drying Thermal stability |
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