The formaldehyde-free tannin adhesive (AcBTanGlu) was synthesized by bark extractives of Acacia confusa and hexamethylenetetramine, and was further used for production of the oriented bamboo scrimber board (OBSB) in this study. When Acacia bark extract tannins are mixed with 2% hexamethylenetetramine, the OBSB pressed at a hot pressing temperature of 150 °C for 15 min can obtain the maximum mechanical strength. The tap tone velocity (V_t), ultrasonic-wave velocity (V_u), dynamic modulus of elasticity (DMOE_u), dynamic modulus of tap tone velocity (DMOE_t), screw holding strength (SHS), and dimensional stability of AcBTanGlu glued OBSB are significantly higher than those of UF and PF glued ones. AcBTanGlu glued OBSB also has higher modulus of elasticity (MOE)_(//) and modulus of rupture (MOR)_(//) values than the parallel structure laminated bamboo board (LBB) and laminated beams made with whole moso bamboo (Phyllostachys pubescens). The 12-week decay test with L. betulina and L. sulphureus showed no significant difference between OBSB glued by AcBTanGlu and UF (p > 0.05). The results of this study will help the bamboo processing industry to gain an understanding of the properties of AcBTanGlu glued OBSB.

无花丹宁胶（AcBTanGlu）是由金合欢和六亚甲基四胺的树皮提取物合成的，并在本研究中进一步用于定向竹板（OBSB）的生产。将相思树皮提取物单宁与2％六亚甲基四胺混合时，在150°C的热压温度下压制OBSB可获得15分钟的最大机械强度。敲击声速度（V _t），超声波速度（V _u），动态弹性模量（DMOE _u），敲击声速度的动态模量（DMOE _t），AcBTanGlu粘合的OBSB的螺钉固定强度（SHS）和尺寸稳定性显着高于UF和PF粘合的OBSB。AcBTanGlu胶合OBSB也具有弹性（MOE）的更高的模量_（//）和破裂（MOR）的模量_（//）的值比并行结构层压竹板（LBB），并用全毛竹制成层压梁（毛竹） 。用白桦乳杆菌和硫脲乳杆菌进行的为期12周的衰减测试表明，用AcBTanGlu和UF胶粘的OBSB之间没有显着差异（p  > 0.05）。这项研究的结果将有助于竹子加工业了解AcBTanGlu胶OBSB的特性。