Development of manufacturing technique for bamboo board with good living condition

本研究生产了一种新型建筑板材。竹子和竹炭是一种未使用的生物质。用4M-NaOH溶胶和水玻璃粉代替有机胶粘剂作为无机胶粘剂。通过表观密度、吸水厚度、膨胀率、抗弯强度、表面硬度、显微观察等方法检测板材的力学性能。综合实验结果如下：以50%竹炭为原料，在220℃、20MPa条件下生产板材时，获得了最大表观密度（0.6）、抗弯强度（30kg/cm2）、吸水厚度膨胀率（5.2）、表面硬度（1000N）。由于这些值通过了JIS对中密度纤维板的要求，因此得出结论，本研究获得的板在不久的将来可用于商业板。

A new construction board was produced in this study. The bamboo, and bamboo charcoal an unused biomass used as the material.The 4M-NaOH soln. and sodium silicate powder were used as the inorganic adhesives in place of organic one.The measurements of apparent density, water absorption thickness expansion rate, bending strength, surface hardness, and microscopy observation were performed to check mechanical properties of the boards. The following comprehensive result was provided by the experiments. When the board was produced at 220degree C and 20MPa with 50% bamboo charcoal, the maximum value of apparent density (0.6), the bending strength (30kg/cm2), the water absorption thickness expansion rate(5.2), and surface hardness (1000N) were obtained.Because these values were passed JIS for MDF board, it concluded that the board obtained in this study is available the commercial boards in the near future.