介绍了一种二硼化锆陶瓷前驱体的制备方法.首先以氧氯化锆、邻羟基苯甲醇、乙酰丙酮为单体,在三乙胺作用下发生缩聚反应,合成出一种含锆聚合物.然后将该聚合物与硼酸在溶液中共混,除去溶剂后即得到二硼化锆陶瓷前驱体.用红外光谱、核磁共振和凝胶渗透色谱对含锆聚合物进行表征,用X射线衍射对二硼化锆陶瓷前驱体的配方及裂解温度进行优化分析.结果表明,所合成的含锆聚合物是一种以Zr-O-Zr为主链、乙酰丙酮与邻羟基苯甲醇配体为侧链的线性聚合物.该聚合物具有良好的溶解性,可与硼酸以1∶1.5的质量比在丙酮/乙醇溶液中共混,从而得到二硼化锆陶瓷前驱体.该前驱体在1400℃下的惰性气氛中裂解,可生成二硼化锆陶瓷粉末,其陶瓷转化率为30％左右.
参考文献
| [1] | Shen Xuetao;Li Kezhi;Li Hejun .Microstructure and ablation properties of zirconium carbide doped carbon/carbon composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2010(2):344-351. |
| [2] | Erica L. Corral;Luke S. Walker .Improved ablation resistance of C-C composites usingzirconium diboride and boron carbide[J].Journal of the European Ceramic Society,2010(11):2357-2364. |
| [3] | Yiguang Wang;Xiaojuan Zhu;Litong Zhang .Reaction kinetics and ablation properties of C/C-ZrC composites fabricated by reactive melt infiltration[J].CERAMICS INTERNATIONAL,2011(4):1277-1283. |
| [4] | Xue-Tao Shen;Ke-Zhi Li;He-Jun Li;Qian-Gang Fu;Shu-Ping Li;Fei Deng .The effect of zirconium carbide on ablation of carbon/carbon composites under an oxyacetylene flame[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2011(1):105-112. |
| [5] | Haifeng Hu;Qikun Wang;Zhaohui Chen .Preparation and characterization of C/SiC-ZrB_2 composites by precursor infiltration and pyrolysis process[J].CERAMICS INTERNATIONAL,2010(3):1011-1016. |
| [6] | Chcn Zhou;Wu Wangping;Chen Zhaofeng et al.Microstructural characterization on ZrC doped carbon/carbon composi tcs[J].Ceramics International,2012,38(01):761. |
| [7] | Zhao Dan;Zhang Changrui;Hu Haifeng et al.Preparation and characterization of threc-dimensional carbon fiber reinforced zirconium carbide composite by precursor infiltration and pyrolysis process[J].Ceramics International,2011,37(07):2089. |
| [8] | Yang Lijuan;Zhu Shizhen;Xu Qiang et al.Synthesis of ultrafine ZrB2 powders by sol-gel process[J].Front Mater Sci Chin,2010,4(03):285. |
| [9] | 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. |
| [10] | Zhang, Y.;Li, R.;Jiang, Y.;Zhao, B.;Duan, H.;Li, J.;Feng, Z. .Morphology evolution of ZrB_2 nanoparticles synthesized by solgel method[J].Journal of Solid State Chemistry,2011(8):2047-2052. |
| [11] | 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. |
| [12] | Yanli Xie;Thomas H. Sanders Jr.;Robert F. Speyer .Solution-Based Synthesis of Submicrometer ZrB_2 and ZrB_2-TaB_2[J].Journal of the American Ceramic Society,2008(5):1469-1474. |
| [13] | Schwab ST;Stewart CA;Dudeck KW;Kozmina SM;Katz JD;Bartram B;Wuchina EJ;Kroenke WJ;Courtin G .Polymeric precursors to refractory metal borides[J].Journal of Materials Science,2004(19):6051-6055. |
| [14] | Abe Y.;Tomioka H.;Gunji T.;Nagao Y.;Misono T.;Kudo T. .Preparation of continuous zirconia fibres from polyzirconoxane synthesized by the facile one-pot reaction[J].Journal of Materials Science,1998(7):1863-1870. |
| [15] | Pan M.;Lu MK.;Xu D.;Yuan DR.;Chen DR.;Yang P.;Yang ZH.;Liu JR. .Preparation of zirconia xerogels and ceramics by sol-gel method and the analysis of their thermal behavior[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2001(1):77-82. |
| [16] | Gunji Takahiro;Yamamoto Hiroshi;Hanaoka Takaaki et al.Preparation of polyzirconoxane from zirconium oxychloride octahydrate and ethylene glycol as a precursor for zirconia ceramics[J].Applied Organometallic Chemistry,2000,14(02):119. |
| [17] | Florence Babonneau .Synthesis and characterization of Si-ZrC-O ceramics from polymer precursors[J].Journal of the European Ceramic Society,1991,8(01):29. |
| [18] | Preiss H.;Brzezinka KW.;Schierhorn E. .Synthesis of polymeric titanium and zirconium precursors and preparation of carbide fibres and films[J].Journal of Materials Science,1998(19):4697-4706. |
| [19] | ZHAO Jinkai,HAN Xiuwen,LIU Xiumei,BAO Xinhe,HANG Jianfeng,JIANG Biao.The mechanism of asymmetric reduction catalyzed by a C2 symmetric bis-amino alcohol catalyst --In situ NMR study of the structure of new type of dual-centered catalyst[J].中国科学B辑（英文版）,2000(01):40-50. |
| [20] | William G. Fahrenholtz .The ZrB_2 Volatility Diagram[J].Journal of the American Ceramic Society,2005(12):3509-3512. |
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