Colince Leufouesangou, Qian Jun, Zhang Jian, Wu Chunbiao, Yu Liyuan
College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Lin'an District, Hangzhou 311300, China.
Materials (Basel). 2024 Apr 26;17(9):2042. doi: 10.3390/ma17092042.
To promote the development of the 'Bamboo as a Substitute for Steel' proposal, rotary cut bamboo veneers were applied to prepare a kind of high-strength laminated bamboo composite, which was achieved through the hot press molding method in this study. Orthogonal experiments of L9 (3) were performed, with hot-pressing temperature, pressure, and time considered as three influencing factors. Physical properties like density and moisture content, and mechanical properties like modulus of rupture (MOR), modulus of elasticity (MOE), shear strength, and compressive strength were tested for the samples. It can be obtained from the results of range analysis and ANOVA that higher density and lower moisture content were correlated with higher mechanical strength. Within the selected range of tested factors, a hot-pressing temperature and time of 150 °C and 10 min can contribute to higher density and lower moisture content, and the combination of 150 °C and 50 MPa can produce greater mechanical strength. In the thickness direction, the laminated bamboo composites displayed a notable compressed structure.
为推动“以竹代钢”方案的发展，本研究采用旋切竹单板，通过热压成型法制备了一种高强度竹层积复合材料。进行了L9(3)正交试验，将热压温度、压力和时间作为三个影响因素。对样品测试了密度和含水率等物理性能，以及抗弯强度(MOR)、弹性模量(MOE)、抗剪强度和抗压强度等力学性能。通过极差分析和方差分析结果可知，较高的密度和较低的含水率与较高的力学强度相关。在所选定的测试因素范围内，150℃和10min的热压温度和时间有助于获得较高的密度和较低的含水率，150℃和50MPa的组合可产生更大的力学强度。在厚度方向上，竹层积复合材料呈现出明显的压缩结构。
