Development of High-Performance Panel Products Laminated Bamboo Material

高性能板材产品竹材层压材料的开发

基本信息

批准号：
01560186
负责人：
KAWAI Shuichi
金额：
$ 1.41万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01560186/
关键词：
Bamboo Material Laminated Product Particleboard Zephyr 積層ボ-ド

项目摘要

Various elements such as sliced veneer, zephyr, particle, and fiber made from bamboo were used as raw materials for developing high-performance panel products, and the physical and mechanical properties of these boards were examined. The results showed that bamboo sliced veneer or zephyr overlaid particleboards were high-performance panel products in relatively light-weight, and great mechanical strength and rigidity. However, sheer failure was often observed in the specimens when tested in bending. The fracture due to the bending moment or the sheer stress, therefore, depend on the ratio of fce/core thickness, board density, span of bending test, and so on.The stress distribution in such sandwich panels was analyzed by the methods of computer simulation, using laminated beam theory and finite element method. The results of the simulation agreed well with the experimental results, and showed that the failure due to the bending moment or the sheer stress can be predicted by some parameters such as the ratio of face/core thickness, the ratio of board thickness to the span, and the ratio of face/core Young's moduli. It was predicted that under the appropriate conditions, the bamboo overlaid particleboards have Young's moduli similar to that of plywood and bending strength twice as great as that of plywood.Physical and chemical pretreatments were examined in order to improve the bondability of outer and inner layers of bamboo. A method of sand-blasting showed an excellent effect on improving the bondability of bamboo. This method is rather simple and fast in treatment, and is possible in automatic control. It is applicable as well to treat a curved surface of bamboo. This method can therefore be expected to have a wide application as a pretreatment for improving the bondability of bamboo materials.

通过竹子制成的各种元素，例如单板，Zephyr，颗粒和纤维，用作开发高性能面板产品的原材料，并检查了这些板的物理和机械性能。结果表明，切成薄片的贴面或Zephyr覆盖的颗粒板是相对轻巧的高性能面板产品，并且机械强度和刚性很大。但是，在弯曲测试时，通常在样品中观察到纯粹的失败。因此，由于弯矩或纯粹的应力引起的断裂，取决于FCE/核心厚度，板密度，弯曲测试的跨度等等。通过使用层压束理论和有限元方法，通过计算机模拟方法分析了此类夹心面板中的应力分布。模拟的结果与实验结果非常吻合，并表明由于弯曲力矩或纯粹的应力而导致的故障可以通过某些参数（例如面部/核心厚度之比，板厚度与跨度的比率）以及面部/核心Young的模量的比率来预测。据预测，在适当的条件下，竹制颗粒的模量与胶合板的模量相似，并且弯曲强度是胶合板的两倍。实质性和化学预处理是为了提高竹子外层和内部层的结合能力。一种砂光的方法对提高竹子的键合有出色的作用。该方法在治疗方面非常简单且快速，并且可以自动控制。它也适用于处理竹子的弯曲表面。因此，可以预期该方法具有广泛的应用，作为改善竹材料的键合的预处理。