复合气凝胶的热物性研究

Study of Thermal Properties of Composite Aerogels

气凝胶是一种以纳米粒子或高聚物分子为骨架组成的超低密度多孔性非晶固体材料,是通过溶胶—凝胶技术和超临界干燥技术制备的,具有许多特殊的性质,但由于气凝胶质地较脆,不易施工,限制了大范围的实际应用,因此采用纤维增强的复合气凝胶是提高气凝胶综合性能的途径之一。本文就纤维增强复合气凝胶的隔热性能、耐火分隔性能等热物性进行了研究。结果表明,复合气凝胶具有优良的隔热性、较高的耐热温度及耐火分隔性能,是一种理想的耐火、隔热材料。

Fibers reinforced composite aerogels have many special properties.In this paper,thermal properties of composite aerogels including heat insulation,fire separation are studied.The results show that composite aerogels are ideal fire-proof,heat insulation materials.