采用水和乙醇混合液为溶剂,八水合氧氯化锆、硼酸、柠檬酸、蔗糖为无机原料,通过溶解混合反应制得无机溶液.利用聚乙烯醇为助剂,通过混合浓缩制备了ZrB2前驱体溶液,并对其进行了流变性能研究与干法纺丝尝试.结果表明,溶液的粘度、储能模量和损耗模量均随温度升高先降低后增加;粘度随着剪切频率及剪切速率的升高而下降,并随着聚乙烯醇含量的升高而下降,说明该溶液为假塑性流体,并且无机成分的加入对其流变性能影响不大;损耗角正切随着温度的升高及剪切频率的增加呈现出先增加后降低的趋势;粘流活化能、非牛顿指数、结构粘度指数均随着聚乙烯醇含量的增加而下降,表明溶液可纺性能得到提升.聚乙烯醇占25％的前驱体溶液可以干纺得到很好的纤维,表明所制得的一系列比例的溶液都可以纺制较好的前驱体纤维,为下一步制备ZrB2陶瓷纤维打下基础.
参考文献
| [1] | Mnnteverde F .Advances in microstructure and mechanical properties of zirconium diboride based ceramics[J].Materials Science and Engineering,2003,346(1-2):310. |
| [2] | William G. Fahrenholtz;Gregory E. Hilmas;Inna G. Talmy;James A. Zaykoski .Refractory Diborides of Zirconium and Hafnium[J].Journal of the American Ceramic Society,2007(5):1347-1364. |
| [3] | Ruixing Li;Yun Zhang;Haijie Lou .Synthesis of ZrB2 nanoparticles by sol-gel method[J].Journal of Sol-Gel Science and Technology,2011(2):580-585. |
| [4] | Jia She;Yongzhong Zhan;Mingjun Pang .In situ synthesized (ZrB_2 + ZrC) hybrid short fibers reinforced Zr matrix composites for nuclear applications[J].International Journal of Refractory Metals & Hard Materials,2011(3):401-404. |
| [5] | Sun Z Y;Han K Q;Wang X F.Preparation of zirconium boride (ZrB2) ceramic nanofibers by electrospinning[A].上海,2011 |
| [6] | Laura Silvestroni;Diletta Sciti .Oxidation of ZrB_2 Ceramics Containing SiC as Particles, Whiskers, or Short Fibers[J].Journal of the American Ceramic Society,2011(9):2796-2799. |
| [7] | Li-Juan YANG,Shi-Zhen ZHU,Qiang XU,Zhen-Yu YAN,Ling LIU.Synthesis of ultrafine ZrB2 powders by sol-gel process[J].中国高等学校学术文摘·材料科学,2010(03):285-290. |
| [8] | Yongjie Yan;Zhengren Huang;Shaoming Dong .New Route to Synthesize Ultra-Fine Zirconium Diboride Powders Using Inorganic-Organic Hybrid Precursors[J].Journal of the American Ceramic Society,2006(11):3585-3588. |
| [9] | Ilican S;Caglar Y;Caglar M .Preparation and characterization of ZnO thin films deposited by sol-gel spin coating method[J].Journal of optoelectronics and advanced materials,2008(10):2578-2583. |
| [10] | Xu P P;Wang X F;Fu S D et al.Preparation of zirconiayttrium fibres from steady precursor by sol-gel technique[J].Advances in Materials Research,2012,535-537:2087. |
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