气凝胶材料的分类研究进展

Research Progress on Classification of Aerogel Materials

摘要: 气凝胶作为一种由纳米多孔网络构成的三维固体材料，因其超低密度、高孔隙率、低导热系数等独特性能，在隔热、吸附、催化、能源及生物医学等领域展现出广阔的应用前景。自20世纪30年代首次报道以来，气凝胶家族已发展出丰富多样的材料体系。本文旨在从材料分类学的视角，对气凝胶的研究进展进行系统综述。文章首先介绍气凝胶的通用制备原理，随后按照材料来源和化学组成，将气凝胶划分为无机气凝胶、有机聚合物气凝胶、碳气凝胶、生物基气凝胶以及多组分杂化气凝胶五大类别。文章详细阐述了各类气凝胶的典型代表、结构特征、核心性能优势及当前面临的主要挑战，并通过各类别之间的对比分析，揭示气凝胶材料从单一性能优化向多功能协同发展的演化规律，为新型气凝胶材料的设计与应用开发提供参考。

Abstract: As a three-dimensional solid material composed of nanoporous networks, aerogels have shown broad application prospects in the fields of heat insulation, adsorption, catalysis, energy and biomedicine due to their unique properties such as ultra-low density, high porosity and low thermal conductivity. Since it was first reported in the 1930 s, the aerogel family has developed a rich and diverse material system. This paper aims to systematically review the research progress of aerogels from the perspective of material taxonomy. The article first introduces the general preparation principle of aerogels, and then divides aerogels into inorganic aerogels, organic polymer aerogels, carbon aerogels, bio-based aerogels, and multi-component hybrid aerogels according to material sources and chemical composition. In this paper, the typical representatives, structural characteristics, core performance advantages and current main challenges of various aerogels are described in detail. Through the comparative analysis between various categories, the evolution law of aerogel materials from single performance optimization to multi-functional collaborative development is revealed, which provides a reference for the design and application development of new aerogel materials.