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以速生林泡桐木材为基体,次亚磷酸钠为还原剂,乙二酸四乙酸二钠(EDTA)为络合剂,利用水热法在木材基质内将醋酸铜原位还原得到金属铜木材复合材料。通过X-射线衍射仪(XRD)、光学显微镜和扫描电子显微镜(SEM)对木材复合材料的结构形貌进行表征,使用万能力学实验机测试改性木材的力学性能。XRD结果显示在2θ为43.22°和50.36°出现了金属铜的特征衍射峰;光学显微和SEM结果显示金属铜均匀分布在木纤维细胞壁上;力学性能测试结果表明:改性木材的弹性模量、抗压强度和比例极限较素材增强明显,最大较素材分别增加了41.60%、51.30%和42.71%。
With fast-growing Paulownia wood as the substrate, sodium hypophosphite as a reducing agent, disodium oxalate distearate (EDTA) as a complexing agent, the hydrothermal method is used to reduce the copper acetate in situ in the wood matrix to obtain the copper metal composite material. The morphology of the wood composites was characterized by X-ray diffraction (XRD), optical microscopy and scanning electron microscopy (SEM). The mechanical properties of the modified wood were tested by universal mechanical testing machine. The XRD results showed that the characteristic diffraction peaks of metallic copper appeared at 43.22 ° and 50.36 °, respectively. The optical and SEM results showed that the metallic copper was uniformly distributed on the cell wall of wood fiber. The mechanical property test results showed that the elastic modulus , The compressive strength and the proportion of the limit increased significantly compared with the material, the largest compared with the material increased by 41.60%, 51.30% and 42.71%.