Preparation method of wave-transparent ablation and heat-insulation integrated material

Abstract

The invention relates to a preparation method of a wave-transparent ablation and heat-insulation integrated material. The preparation method comprises the following steps: connecting a fabric high-density surface layer and a fabric low-density inner layer to form a whole body, so as to prepare a pre-formed body; preparing a hydrophobic coating on the fabric low-density inner layer of the pre-formed body to inhibit the wetting permeability of a water-based precursor; then circularly impregnating silica sol through a liquid-phase infiltration moulding technology; increasing the binding amount ofthe pre-formed body and the silica sol to improve the density of an outer surface through the circular impregnating of the silica sol; after reaching a certain density, removing a hydrophobic effectof the hydrophobic coating to obtain an integrated composite material blank; performing aerogel preparation on the integrated composite material blank without the hydrophobic effect of the hydrophobiccoating to obtain the wave-transparent ablation and heat-insulation integrated material. According to the preparation method provided by the invention, the integrated wave-transparent ablation and heat-insulation material is prepared through an integrated moulding preparation technology of a gradient density composite material which is initiated in the field; wave-transparent ablation and heat-insulation integration is realized through integrated moulding and the technical blank of the field is eliminated.

Description

technical field [0001] The invention relates to ceramic materials, in particular to a method for preparing a wave-transparent, ablated and heat-insulated integrated material. Background technique [0002] At present, the cabin material of the aircraft needs to meet the requirements of wave-transparent ablation and heat insulation, and the cabin material is required to be a multi-layer structure. For the multi-layer structure, most of the multi-layer structures are formed by single-layer molding and then assembled layer by layer. However, this method needs to be connected between layers through adhesive bonding, thread, and bolt reinforcement, which easily leads to problems such as low connection strength between layers, low assembly accuracy, cumbersome connection operations, and increased costs. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to provide a method for preparing a wave-transparent abla...

AI Technical Summary

Problems solved by technology

[0002] At present, the cabin material of the aircraft needs to meet the requirements of wave-transparent ablation and heat insulation, and the cabin material is required to be a multi-layer structure. For the multi-layer structure, most of the multi-layer structures are formed by single-layer molding and then assembled layer by layer. However, this method requires the connection between layers through adhesive bonding, thread, and bolt reinforcement, which easily leads to problems such as low connection strength between layers, low assembly accuracy, cumbersome connection operations, and increased costs.