【作者】 刘柏平； 程万里； 周建波； 高洁； 傅万四；

【Author】 LIU Bai-ping1, CHENG Wan-li1, ZHOU Jian-bo2, GAO Jie1, FU Wan-si2 (1.Material science and engineering college of Northeast Forestry University, Harbin, Heilongjiang,150040; 2.Beijing Forestry machinery research institute of National Forestry Bureau, Beijing,100029)

【机构】 哈尔滨市东北林业大学材料科学与工程学院； 国家林业局北京林业机械研究所；

【摘要】 本文就新型竹质工程材料-原态重组竹板材的制造工艺进行了初步探讨,考察了不同工艺条件对板材主要物理力学性能的影响,并与单板层积材、结构用竹木复合板、混凝土模板用竹材胶合板等同类板材的物理力学性能进行了比较。结果表明:当采用酚醛树脂胶黏剂双面涂胶,涂胶量250g/m2,热压工艺条件为单位压力2.0MPa,热压时间30s/mm,屏极电压4200V、屏极电流1.5A时板材物理力学性能最优;原态重组竹的静曲强度及弹性模量能达到上述三种结构材的强度要求。本文还提出了板材压制过程中存在的问题及改进建议。更多还原

【Abstract】 This study aimed at developing a new bamboo engineered panel, which was manufactured by laminating glued circumferential sections of bamboo using high-frequency press. The effects of adhesive types, resin loading levels, and pressing conditions on the physical and mechanical properties of the panel were investigated. The results were compared with the properties of laminated veneer lumber, bamboo-wood composite panel for structural use, and bamboo plywood for concrete shuttering. It was concluded that the bamboo engineered panel had satisfied properties when the loading level of phenol-formaldehyde (PF) resin was at 250g/m2. The optimum condition of high-frequency pressing was as follows: specific pressure of 2.0MPa, pressing time of 25s/mm, plate voltage of 4200V, and screen current of 1.5A. The results also showed that the MOR and MOE of the new bamboo engineered panel were comparable with the bending properties of the above mentioned bamboo structural materials. The remained problems in high-frequency pressing and their improvement approaches were also addressed in this paper.更多还原