无机材料学报 ›› 2021, Vol. 36 ›› Issue (3): 245-256.DOI: 10.15541/jim20200220 CSTR: 32189.14.10.15541/jim20200220

• 综述 • 上一篇    下一篇

高温隔热用微纳陶瓷纤维研究进展

张晓山1(), 王兵1, 吴楠2, 韩成1, 吴纯治1, 王应德1()   

  1. 1. 国防科技大学 空天科学学院 新型陶瓷纤维及其复合材料重点实验室, 长沙 410073
    2. 国防科技大学 空天科学学院 材料科学与工程系, 长沙 410073
  • 收稿日期:2020-04-26 修回日期:2020-06-09 出版日期:2021-03-20 网络出版日期:2020-09-09
  • 通讯作者: 王应德, 教授. E-mail: wangyingde@nudt.edu.cn
  • 作者简介:张晓山(1991-), 男, 博士研究生. E-mail: zhangxiaoshan15@nudt.edu.cn
  • 基金资助:
    国防基础科研计划(XXXX2016550C001);国防基础科研计划(XXXX2017550C001)

Micro-nano Ceramic Fibers for High Temperature Thermal Insulation

ZHANG Xiaoshan1(), WANG Bing1, WU Nan2, HAN Cheng1, WU Chunzhi1, WANG Yingde1()   

  1. 1. Science and Technology on Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
    2. Department of Material Science and Engineering, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2020-04-26 Revised:2020-06-09 Published:2021-03-20 Online:2020-09-09
  • Contact: WANG Yingde, professor. E-mail: wangyingde@nudt.edu.cn
  • About author:ZHANG Xiaoshan(1991-), male, PhD candidate. E-mail: zhangxiaoshan15@nudt.edu.cn
  • Supported by:
    National Defense Basic Research Program(XXXX2016550C001);National Defense Basic Research Program(XXXX2017550C001)

摘要:

陶瓷纤维具有密度低、强度高、耐高温、抗氧化和耐机械震动性能好等优点, 是空天飞行器、核能发电和化工冶金等热防护领域所需的关键高温隔热材料。传统陶瓷纤维直径粗(?>5 μm)、脆性大、热导率高, 在实际隔热领域应用中受到了极大限制。减小纤维直径, 制备微纳陶瓷纤维, 不仅有利于提高纤维力学性能, 还有望改善其高温隔热性能, 近年来引起了研究者的广泛关注。从微纳陶瓷纤维中影响热传输(气体热传导、固体热传导和辐射传热)的本征因素出发, 有针对地进行组成和结构优化, 进而改善其高温隔热性能, 是当前微纳陶瓷隔热纤维研究的重点方向。本文结合国内外研究现状, 在介绍微纳陶瓷纤维隔热机理的基础上, 按照纤维的组成和结构特点将目前微纳陶瓷隔热纤维分为三类, 即微纳陶瓷纤维气凝胶、中空/多孔微纳陶瓷纤维和复合微纳陶瓷纤维。对这三类不同特点的微纳陶瓷隔热纤维最新研究进展进行综述, 并展望了微纳陶瓷隔热纤维的未来发展方向。

关键词: 微纳陶瓷纤维, 高温隔热, 结构优化, 纤维气凝胶, 中空纤维, 复合纤维, 综述

Abstract:

Ceramic fiber has the advantages of low density, high strength, high temperature resistance and good mechanical vibration resistance. It is the critical high temperature thermal insulation materials especially in thermal protection fields such as aerospace vehicles, nuclear power plants and chemo-metallurgical industry, etc. The traditional ceramic fiber with large diameter (> 5 μm), high brittleness and high thermal conductivity has been greatly restricted in high temperature thermal insulation fields. In recent years, more and more attention has been paid to the preparation of micro-nano ceramic fibers by decreasing the diameter of fiber, which is not only beneficial to improve the mechanical properties of the fibers, but also to enhance their high temperature thermal insulation properties. Further, by finely regulating the composition and structure of the micro-nano ceramic fibers that intrinsically affecting the heat transfer (heat conduction of gas, heat conduction of solid and radiative heat transfer) mechanism in micro-nano ceramic fibers, the high temperature thermal insulation performance can be effectively improved, which is the current focus of the micro-nano ceramic fibers in high temperature thermal insulation fields. The thermal insulation mechanism of the micro-nano ceramic fibers was firstly introduced. Then, based on the research at home and abroad, this review divides the current micro-nano ceramic fibers into three categories according to the difference of their composition and structure, namely fibers aerogels, hollow/porous fibers and composite fibers. The latest research progress on composition and structure optimization of micro-nano ceramic fibers for high temperature thermal insulation is reviewed, and the future development tendency is prospected.

Key words: micro-nano ceramic fiber, high temperature thermal insulation, structural optimization, fiber aerogel, hollow fiber, composite fiber, review

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