中文摘要：

介绍木材微米加工技术新产品MFLB的微观构成机理,指出孔穴是MFLB的重要微观结构特征;并引入孔穴压缩变化率（η）参数,通过设置一系列热压压力以产生不同水平的孔穴压缩变化率,采用显微镜分析MFLB板材横断面图像,选取均匀部位进行孔穴压缩变化率对板材性能影响的分析。结果表明：热压压力采用1.6-2.2MPa,均能压制出符合标准的密度为0.3g·cm^-3的MFLB板材,η≤0,在-0.0487--0.0680之间,热压压力与孔穴压缩变化率η呈非线性关系;获得密度为0.3g·cm^-3MFLB性能下降的孔穴压缩变化率临界值;分析比较不同孔穴含量、孔穴压缩变化率下孔穴的分布、尺寸和形状;讨论对于某一密度、一定纤维化的木纤维原料,孔穴含量、孔穴压缩变化率对MFLB板材的弹性模量和静曲强度的影响。

英文摘要：

In this paper, the structure mechanism of MFLB was introduced, and the void was pointed to be an important structure character of MFLB. Another parameter named hole compressibility（η） was introduced in studying MFLB, a set of hot pressure were applied to produce various hole compressibility, some uniform sections on cross-section of MFLB were selected by microscopic analysis to discuss the effects of hole compressibility on the MOE ＆ MOR of MFLB. The results showed that MFLB （0.3 g· cm^-3 in density ） pressed at various hot presses（ from 1.6 to 2.2 MPa ） all met with JISA 5908 Japanese Particleboard Standard, η≤ 0, ranged from- 0.048 7 - -0.068 0, the critical value of hole compressibility at which the strength began to decrease was also obtained, and the void distribution, size and shape at different void content ＆ hole compressibility were compared, then the effects of hole compressibility on MOE and MOR of MFLB was discussed.