<正>在不同温湿度条件下，对竹材增强单板层积材（LVL）进行处理，分析了经过处理后竹材增强LVL力学性能的变化。结果表明：经过高温高湿处理后，竹材增强LVL的力学性能均出现了明显的衰减。其中，弹性模量（MOE）平均衰减30.7%，静曲强度（MOR）平均衰减38.3%，冲击韧性平均衰减11.7%；经过低温处理后，竹材增强LVL的弹性模量和静曲强度都有微弱增长的趋势，弹性模量平均增长率为2.5%，静曲强度平均增长率为5.4%，冲击韧性平均衰减率为37.9%；在高低温交变处理过程中，竹材增强LVL的弹性模量和静曲强度处于上下波动的状态，弹性模量衰减率或增长率在5%以内，静曲强度衰减率或增长率在10%以内，冲击韧性呈衰减趋势，平均衰减率为18.7%。

The properties of four kinds of flexible epoxy resins C22 DGE,C22 TGE,C21 DGE, C36, DGE were compared with each other. By TG-DSC, the active energy and enthalpy of curing reaction of flexible epoxy resin were further researched. The relationship between heat-resistance and mechanical properties of cured products of flexible epoxy resins and their structures were studied. It was found that the curing reaction of flexible epoxy resins with anhydride was particularly complex and heat-generating, the enthalpy of C22 TGE/THPA, C22 DGE/THPA, C21 DGE/THPA, C36 DGE/THPA were 173.35,131.83,155.67,102.46 J/g and the active energy of curing systems were 79.4, 56.99,91.30,70.90 kJ/mol, respectively. The curing products of longchain epoxy resins with anhydride bad a superior impact-resistance and flexibility to bisphenol A epoxy resins,but junior heatresistance to bisphenol A epoxy resins. The flexible epoxy resins could be applied in the flexible conditions, but not including on the condition of high temperature.