可纺性锆溶胶的制备与应用研究Ⅱ——ZrO_2/PVP杂化连续纤维的制备  

Preparation and Application of Spinnable Zirconium Sol Part Ⅱ:Preparation of Continuous ZrO_2/PVP Hybrid Fiber

作　　者：翟林峰[1] 史铁钧[1] 于少明[1] 

机构地区：[1]合肥工业大学化工学院,合肥230009

出　　处：《应用化学》2009年第1期55-58,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目(50373010)

摘　　要：将具有可纺性的锆溶胶与质量分数为10%的PVP溶液共混,采用干法纺丝制备出ZrO2/PVP杂化连续纤维。运用FT-IR、TG、SEM、XRD等测试技术对杂化纤维形貌、组成以及杂化程度对热处理后ZrO2纤维形态的影响进行研究。结果表明,杂化纤维的长度可达数十米,直径为10～25μm;PVP与锆溶胶分子间主要通过锆氧配位键形成杂化;热处理后的ZrO2纤维保持了原杂化纤维的形状,但直径明显减小,且随着ZrO2含量的减小,ZrO2纤维的收缩程度增加,甚至开裂;热处理后的ZrO2纤维晶粒尺寸随着ZrO2含量的减小而减小;同一ZrO2含量下,ZrO2晶粒随焙烧温度的增加而增大。ZrO2/PVP hybrid fibers were successfully prepared from the blend of spinnable zirconium sol and 10%PVP solution by dry spinning. FT-IR, TG, SEM and XRD were applied to study the chemical structure and microstructure of the hybrid fibers as well as influence of hybrid degree on the sintered ZrO2 fibers. The results show that ZrO2/PVP hybrid fibers with a diameter of 10 - 25 μm can be more than tens meters in length. The hybrid between PVP and zirconium sol is formed by Zr-O coordinate linkage. The fibers retained cracked when the ZrO2 content in the hybrid fibers decreased. The lower the ZrO2 content, the smaller the crystal grains of ZrO2 in the sintered fibers. At the same ZrO2content, the crystal grains of ZrO2 increased with the sintering temperature increase.

关 键 词：锆溶胶 杂化纤维 可纺性 制备 

分 类 号：O611[理学—无机化学] O631[理学—化学]