| abstract |
The invention provides a closed-cell aerogel microsphere and a preparation method thereof, a heat-insulating coating and a preparation method thereof, and a heat-insulating coating, and relates to the technical field of heat-insulating materials, wherein the closed-cell aerogel microsphere is mainly prepared from the following raw materials: SiO 2 2 Aerogel, ammonium alkoxide, ammonium pentaborate, dispersant, and water. The invention solves the problem of SiO 2 The technical problems of large oil absorption of aerogel due to an open pore structure and pore size collapse during re-drying due to large surface tension are solved, and the closed-cell hollow aerogel microspheres are obtained and reducedThe influence of surface tension on the aperture, the improvement of compressive strength and the improvement of heat insulation efficiency. |