| 中密度纤维板微波预热后板坯内水分和温度的分布 |
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| 引用本文： | 余妙春,饶久平,谢拥群.中密度纤维板微波预热后板坯内水分和温度的分布[J].东北林业大学学报,2011,39(6):47-48,64. |
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| 作者姓名： | 余妙春 饶久平 谢拥群 |
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| 作者单位： | 福建农林大学; |
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| 基金项目： | 国家自然科学基金(30871982) |
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| 摘 要： | 研究了微波预热对中密度纤维板板坯中水分和温度分布规律的影响.结果表明:微波预热处理使板坯形成表层含水率高,芯层含水率低的含水率梯度,减小预压高度、增加微波预热时间、适当调高板坯初含水率有利于在板坯中形成表层含水率略高于芯层的含水率梯度;微波预热处理使板坯形成芯层温度高,表层温度低的温度梯度,形成了驱动内部水分向表层渗透...
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| 关 键 词： | 中密度纤维板 微波预热 水分移动 温度梯度 |
Moisture and Temperature Distribution of MDF Mat After Microwave Preheating |
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| Yu Miaochun,Rao Jiuping,Xie Yongqun.Moisture and Temperature Distribution of MDF Mat After Microwave Preheating[J].Journal of Northeast Forestry University,2011,39(6):47-48,64. |
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| Authors: | Yu Miaochun Rao Jiuping Xie Yongqun |
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| Institution: | Yu Miaochun,Rao Jiuping,Xie Yongqun(College of Material Science and Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,P.R.China) |
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| Abstract: | An experiment was conducted to study the moisture and temperature distribution of medium-density fibreboard(MDF) mat after microwave preheating.Result showed that the microwave preheating made the mat form a moisture gradient with the high moisture of the edge layer and the low moisture of the central layer.And it could also reduce the preloading height,increase the microwave preheating time,and suitably raise the initial moisture content,which helped to form the moisture gradient.Moreover,the microwave pre... |
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| Keywords: | Medium-density fibreboard Microwave preheating Water movement Temperature gradients |
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