摘要
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%。
Copper-wood composites were prepared through hydrotherrnal synthesis while Cu（Ac）2 as Cu source, so- dium hypophosphite（NaH2 PO2 ） as reductant, EDTA as complexing agent. The structure and morphology of the composites were characterized by optical microscope, X-ray diffraction（XRD） and scanning electron microscope（SEM）. The mechanical properties were measured using universal mechanics experimental machine. XRD results indicated that the characteristic peaks of copper were found at 43.22° and 50. 36°. Optical microscope and SEM results showed that copper distributed uni- formly inside the wood cell walls. The results of mechanics performance testing showed, comparing with untreated wood, the limit of proportion, strength of compression and modulus of elasticity of the composites were increased obviously, the value was increased by 41.60% ,51.30% and 42.71% than original wood at the most.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第7期139-141,144,共4页
New Chemical Materials
基金
中国博士后科学基金(2011M501375)
安徽省博士后科研资助项目(11003833)资助
关键词
木材
水热法
金属铜
复合材料
力学性能
wood, hydrothermal synthesis, copper, composite, mechanical property.
