▎ 摘　　要

NOVELTY - Preparing controllable structure heat-insulating material involves mixing the anti-radiation powder with the dispersion medium at a ratio of 0:1 to 90:1 to obtain an anti-radiation preparation. The anti-radiation agent is put in a clean compound container, put the fiber preform into the local impregnation compound, after the impregnation and compounding. The fiber preform is taken out, quickly freeze the dispersion liquid to form it by freezing, and used ice crystal extrusion to complete the overlap of the internal micron-level radiation-resistant particles to form a radiation-resistant mesh structure to obtain a local radiation-resistant structural fiber prefabrication body. The anti-radiation agent is re-inserted into the clean composite container, recombined the local anti-radiation structure fiber preform with the anti-radiation agent, taken it out and freeze to form mesh structure to obtain a local anti-radiation structure fiber preform. USE - Method for preparing controllable structure heat-insulating material. ADVANTAGE - The material has controllable density distribution anti-infrared radiation structure, and can realize high temperature heat insulation performance. DETAILED DESCRIPTION - Preparing a heat-insulating material with a controllable structure involves mixing the anti-radiation powder with the dispersion medium at a ratio of 0:1 to 90:1 to obtain an anti-radiation preparation. The anti-radiation agent is put in a clean compound container, put the fiber preform into the local impregnation compound, after the impregnation and compounding. The fiber preform is taken out, quickly freeze the dispersion liquid to form it by freezing, and used ice crystal extrusion to complete the overlap of the internal micron-level radiation-resistant particles to form a radiation-resistant mesh structure to obtain a local radiation-resistant structural fiber prefabrication body. The anti-radiation agent is re-inserted into the clean composite container, recombined the local anti-radiation structure fiber preform with the anti-radiation agent, taken it out and freeze to form mesh structure to obtain a local anti-radiation structure fiber preform. The completely composite fiber preform is dried to obtain a controllable anti-radiation structure fiber mat. An anti-radiation structure fiber felt is controllable through sol and fiber composite, sol-gel, aging, solvent replacement, drying, and moisture-proof treatment to obtain controllable structure heat insulation material.