材料科学
莫来石
复合材料
陶瓷
纤维
多孔性
热的
物理
气象学
作者
Zheng Qin,Xiaojing Xu,Tao Xu,Yueqi Cao,Jin‐Bin Wu,Liwen Yan,Feng Hou,Jiachen Liu,Anran Guo
标识
DOI:10.1016/j.jeurceramsoc.2022.08.050
摘要
How to improve the strength of fibrous porous ceramics dramatically under the premise of no sacrificing its low density and thermal conductivity has remained a challenge in the high-temperature thermal insulation field. In this paper, a new kind of high-strength mullite fiber-based ceramics composed of interlocked porous mullite fibers was prepared by nanoemulsion electrospinning and dry pressing method. Results show that as to the porous ceramics with the same density (~0.8 g/cm 3 ), the three-dimensional skeleton structure composed of porous mullite fibers was much denser than that composed of solid mullite fibers. Therefore, porous mullite fiber-based ceramics exhibited a higher compressive strength (5.53 MPa) than that of solid mullite fiber-based ceramics (3.21 MPa). In addition, porous mullite fiber-based ceramics exhibited a superior high-temperature heat insulation property because the porous structure in fibers could reduce the radiant heat conduction. This work provides new insight into the development of high-temperature thermal insulators.
科研通智能强力驱动
Strongly Powered by AbleSci AI