Abstract: Aerogel has excellent properties such as high porosity, low density, high specific surface area and low thermal conductivity. It is widely used in the fields of heat insulation, sound insulation and adsorption, which has become a research hotspot of new nanoporous materials since the 21st century. However, the network structure of aerogel also causes very prominent disadvantages. First of all, its poor mechanical properties and brittleness makes it difficult to process and treat, and easy to produce dust pollution. Secondly, aerogels are expensive due to restrictions on raw materials and preparation techniques. In addition, the samples of aerogels are always formed statically rather than continuously, the shape of which is general block or powder according to the mold or reaction. Therefore, developing the high mechanical properties, finding a facile and cheap synthesis methods, and broadening the morphology of aerogel remains challenging. Designing and preparing fibrous aerogels and fiber composite aerogels is one of the methods to solve the aforementioned problems. For example, the inorganic fiber aerogels, organic aerogels, organic/inorganic hybrid fibers aerogels and fiber composite aerogels can be prepared by wet-spinning, in-tube casting, fiber self-assembly, electrostatic-spinning, fiber pyrolysis and carbonization, fibrous deposition and other forming me-thods and drying process including supercritical pressure, freezing and atmospheric drying and so on. Therefore, the required performance of aerogels such as the skeleton structure enhancement of aerogels and fibers,the formation and continuous production of aerogels can be realized, which can avoid agglomeration and facilitate to recycle. Besides, the aerogels can be endowed with new properties on the basis of maintaining excellent original properties by designing special hollow structure and hierarchical pore structure, or using the unique physical/chemical characteristics of the embedded fibers. In general, we summarize the research status of fiber aerogels and fiber composite aerogel materials in the past five years, introduces the types, characteristics, preparation methods and principles of fiber aerogels, and explains the advantages of fiber aerogels in adsorption, heat insulation, applications in traditional and emerging fields such as sensing, energy storage, catalysis and microwave shielding. Furthermore, we also point the possible research directions in future, and propose some suggestions for the improvement of fiber aerogels.
作者简介: 朱浩彤,2018年6月毕业于大连工业大学,获得工学学士学位。现为大连工业大学纺织与材料工程学院硕士研究生,在张鸿教授的指导下进行研究。目前主要研究领域为气凝胶纤维增强。 张鸿,大连工业大学纺织与材料工程学院教授,博士研究生导师。2008年12月毕业于大连理工大学土木水利学院材料学专业,取得博士学位。中国纺织工业联合会“纺织之光”教学名师。国家科技项目评审专家、中国轻工业联合会科技项目评审专家、辽宁省科技项目评审专家、大连市科技项目评审专家。主要学术研究方向为化学纤维和生物质纤维材料成形与改性,相变功能、吸附功能、传感功能等功能与智能高分子材料合成与制备。主持辽宁省高等学校产业技术研究院重大项目、辽宁省自然科学基金项目、辽宁省基础研究项目、大连市创新基金项目、大连市科技攻关项目等纵向项目10余项,主持横向合作开发项目3项。已在Carbohydrate Polymers、Solar Energy Materials and Solar Cells、International Journal of Biological Macromolecules、《高等学校化学学报》等刊物上发表论文60余篇,其中被SCI、EI收录30多篇。已获授权发明专利13项。参编《高分子材料改性》《高分子材料专业实验》等教材2部。获得中国轻工业联合会科技发明一等奖1项、辽宁省科技发明二等奖1项和大连市科技发明三等奖1项。
引用本文:
朱浩彤, 刘玲伟, 闫铭, 张鸿, 郭静, 夏英. 纤维气凝胶的分类、制备工艺及应用现状[J]. 材料导报, 2021, 35(23): 23057-23067.
ZHU Haotong, LIU Lingwei, YAN Ming, ZHANG Hong, GUO Jing, XIA Ying. Classification, Preparation Process and Application of Fibre Aerogel: a Review. Materials Reports, 2021, 35(23): 23057-23067.
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