根据菲克第二定律，建立了马尾松锯材在热压干燥过程中传质数学模O型将长×宽×厚为3 0 0 mm X 100 mm x22 mm 的马尾松锯材在温度为100 ce 飞相对湿度约为100% 的条件下汽蒸处理3 h ， 再在温度180 ce 飞压力0 . 2 MPa 飞呼吸间隔60 s 的工艺条件下进行热压干燥验证试验。结果表明: 所建传质模型除含水率在纤维饱和点以上时，马尾松锯材的某些测试点实测含水率与模型计算值偏差稍大外，其他情况都能较好地反应热压干燥过程中水分移动规律。
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