静电纺丝模板法制备γ-Al_2O_3纤维  

Synthesis of γ-Al_2O_3 Fibers by Electrospinning Template Method

作　　者：李慧 魏恒勇 王鹏 王合洋 卜景龙 杨金萍 

机构地区：[1]华北理工大学材料科学与工程学院河北省无机非金属材料重点实验室,河北唐山063009

出　　处：《合成纤维》2015年第9期40-43,共4页Synthetic Fiber in China

基　　金：国家自然科学基金项目(51302064和51472072)

摘　　要：以静电纺丝法制备的聚乙烯吡咯烷酮(PVP)纤维为模板,以非水解溶胶-凝胶法制备的Al2O3溶胶为浸渍液,利用模板浸渍技术制备出Al2O3凝胶-PVP复合纤维,再经1 000℃煅烧制备出γ-Al2O3纤维。借助X射线衍射和扫描电镜研究了浸渍溶胶浓度、浸渍时间及浸渍次数对γ-Al2O3纤维物相组成及形貌的影响。结果表明:当Al2O3溶胶中铝离子浓度为0.1 mol/L、浸渍时间为30 s、浸渍1次时,合成的γ-Al2O3纤维表面平滑,连续性好,纤维直径达到0.22μm。Polyvinyl pyrrolidone（PVP） fibers were prepared by electrospinning and used as templates. Al2O3 sol was prepared by non-hydrolytic sol-gel method, the Al2O3gel-PVP composite fibers were prepared viathe impregnation of PVP template fibers into Al2O3 sol. After the composite fibers were calcined at 1 000 ℃,γ-Al2O3 fibers formed. The influences on the γ-Al2O3 fibers formation of different processing parameterssuch as dipping concentration of Al2O3 sol, immersion time and dipping times were studied by XRD andSEM. The results showed that when the concentration of Al3＋was 0.1 mol/L, impregnation time was 30 s, andonly once dipping, the surface of γ-Al2O3 fiber was smooth, the fiber diameter was 0.22 μm.

关 键 词：氧化铝纤维 静电纺丝模板法 非水解溶胶-凝胶法 浸渍法 

分 类 号：TQ343.5[化学工程—化纤工业]