柔性α-Al2O3纳米结构纤维的制备与表征  

Fabrication and Characterization of Flexible Nanostructured α-Al_2O_3 Fibers

作　　者：贾玉娜[1] 陈代荣[1] 焦秀玲[1] 

机构地区：[1]山东大学化学与化工学院,特种功能聚集体材料教育部重点实验室,济南250100

出　　处：《高等学校化学学报》2011年第3期601-604,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20671057);国家“九七三”计划项目(批准号:2010CB933504)资助

摘　　要：制备了致密柔性的α-Al2O3纳米结构纤维,并表征了纤维的微观结构和断裂强度及断裂伸长率等力学性质,讨论了影响纤维性能的因素,实验结果表明,纤维由厚度为30～50 nm的纳米片构成,没有孔洞和裂纹,具有良好的抗热震性,同商品α-Al2O3纤维相比具有较高的断裂强度及断裂伸长率.The dense flexible α-Al2O3 fibers with nanostructures were fabricated by sol-gel-electrospinning process.The microstructure of fibers and mechanical properties such as fracture strength and elongation were characterized.Moreover,the factors affecting the fiber properties were discussed.The α-Al2O3 fibers were composed with 30—50 nm nanoflakes,and no small holes or cracks were observed in those,which exhibted superior good thermal shock resistance and higher fracture strength and elongation compared with the commercial α-Al2O3 fibers.

关 键 词：Α-AL2O3 柔性纤维 纳米结构 静电纺丝 

分 类 号：O614[理学—无机化学]