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材料导报  2021, Vol. 35 Issue (14): 14025-14029    https://doi.org/10.11896/cldb.20060207
  无机非金属及其复合材料 |
Al2O3-SiO2-B2O3连续纤维的制备及力学性能
贾玉娜1, 梁可可1, 焦秀玲1, 陈代荣2,*, 张剑3, 吕毅3, 赵英民3
1 山东大学国家胶体材料工程技术研究中心,济南 250100
2 山东大学化学与化工学院,济南 250100
3 航天特种材料及工艺技术研究所,北京 100074
Preparation and Mechanical Properties of the Al2O3-SiO2-B2O3 Continuous Fibers
JIA Yuna1, LIANG Keke1, JIAO Xiuling1, CHEN Dairong2,*, ZHANG Jian3, LYU Yi3, ZHAO Yingmin3
1 National Engineering Research Center for Colloidal materials, Shandong University, Jinan 250100, China
2 School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
3 Institute of Aerospace Special Materials and Technology, Beijing 100074, China
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摘要 本实验采用溶胶-凝胶法结合干法纺丝制备了氧化铝基凝胶连续纤维,煅烧后得到含12.92% B2O3、24.56% SiO2和 62.50%(均为质量分数) Al2O3的氧化铝基陶瓷连续纤维。通过TG-DSC、SEM、TEM、XRD和强度拉伸仪等分析手段研究了前驱体溶胶的微观结构、纤维晶相组成以及纤维表面和内部结构。结果表明,通过溶胶-凝胶法制备的前驱体溶胶可纺性优良,性质稳定。采用干法纺丝得到的氧化铝基凝胶连续纤维长度可达上千米,将凝胶纤维进行陶瓷化后形成的含硼氧化铝基陶瓷连续纤维直径均匀,为14—15 μm,经1 000 ℃煅烧后纤维主晶相为莫来石相,拉伸强度最高可达1.35 GPa。本实验所制备的氧化铝基陶瓷连续纤维具有优良的力学性能,在热防护领域具有广阔的应用前景。
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贾玉娜
梁可可
焦秀玲
陈代荣
张剑
吕毅
赵英民
关键词:  氧化铝基连续纤维  氧化硼  溶胶-凝胶法  干法纺丝    
Abstract: In the present work, alumina-based gel fibers were prepared through sol-gel method combined dry-spinning technology, which transformed to the continuous alumina ceramic fibers with the composition of 12.92wt% B2O3, 24.56wt% SiO2 and 62.50wt% Al2O3 after calcination. Thermogravimetric-differential scanning calorimeter(TG-DSC), scanning electron microscope(SEM), transmission electron microscope(TEM), X-ray diffraction(XRD) and mechanical property analytical techniques were applied to investigate the microstructure of the sol precursor, the phase composition of the fibers, as well as the surface and internal structure of the fibers. The results indicate that the sol precursor prepared through the sol-gel method has excellent and stable spinability, and the gel fibers with the length longer than 1 000 m can be obtained by dry-spinning. After calcination, B-containing continuous alumina ceramic fibers with the uniform diameter of 14—15 μm were formed. With the calcination temperature of 1 000 ℃, the main crystalline phase in the fibers is mullite, whose tensile strength can reach up to 1.35 GPa. The as-prepared continuous alumina ceramic fibers have excellent mechanical properties, which show great potential in the field of thermal protection.
Key words:  alumina-based continuous fibers    boron oxide    sol-gel method    dry-spinning technique
               出版日期:  2021-07-25      发布日期:  2021-08-03
ZTFLH:  TB321  
通讯作者:  * cdr@sdu.edu.cn   
作者简介:  贾玉娜,2011年6月毕业于山东大学,获得理学硕士学位,目前是山东大学国家胶体材料工程技术研究中心高级工程师,主要从事氧化铝基连续纤维的制备和性能方面的研究工作。
陈代荣,山东大学特聘教授,博士生导师。1997年毕业于吉林大学,获得理学博士学位。主要从事无机功能纳米结构材料的制备、表征和构效关系研究工作。在国际 SCI 收录期刊发表论文190多篇,SCI 他引6 000多次,自2015年引来连续入选Elsevier中国大陆高被引学者,获得国家发明专利20余项。作为第一完成人,获得国家科技进步二等奖、山东省科技进步一等奖、教育部科技进步二等奖各一项。
引用本文:    
贾玉娜, 梁可可, 焦秀玲, 陈代荣, 张剑, 吕毅, 赵英民. Al2O3-SiO2-B2O3连续纤维的制备及力学性能[J]. 材料导报, 2021, 35(14): 14025-14029.
JIA Yuna, LIANG Keke, JIAO Xiuling, CHEN Dairong, ZHANG Jian, LYU Yi, ZHAO Yingmin. Preparation and Mechanical Properties of the Al2O3-SiO2-B2O3 Continuous Fibers. Materials Reports, 2021, 35(14): 14025-14029.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20060207  或          http://www.mater-rep.com/CN/Y2021/V35/I14/14025
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