Research progress of fibrous porous ceramic

Fibrous porous ceramics with three-dimensional structure, constructed by random stacking chopped fibers and binders at crossover nodes, shows lightweight, high porosity and specific surface, high refractoriness. These important characteristics render them very suitable for large-area thermal protection system of spacecraft, which can greatly reduce its quality and costs, while providing well thermal protection for aircraft. Recently, many efforts have been made to improve mechanical property of fibrous porous ceramics.The types of fiber skeletons, binders, optimization of preparation methods, and the latest research progress were summarized. The multiple insulation mechanism, integration and engineering of fibrous porous ceramics were prospected.