Preparation method of high-temperature-resistant aerogel and aerogel-type porous ceramics

• Main Author: JIN CHENGLI
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2017
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS THEREOF; CONCRETE; INORGANIC CHEMISTRY; LIME, MAGNESIA; METALLURGY; NON-METALLIC ELEMENTS; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a preparation method of high-temperature-resistant aerogel. The method comprises: adding high-temperature-resistant powder or crystal whiskers to sol, performing in-situ compounding of sol and high-temperature-resistant powder or crystal whiskers, and performing aging, modification and drying to obtain high-temperature-resistant aerogel. The invention further discloses a preparation method of aerogel-type porous ceramics. Porous ceramics having an aerogel hole structure kept is obtained by sintering the high-temperature-resistant aerogel. The prepared high-temperature-resistant aerogel and aerogel-type porous ceramics can resist high temperature of 1000-1800 DEC C or more, keep the nanometer hole structure from collapse, have high porosity and strength and have hole diameters which can be adjusted from micropores to large holes. The aerogel and aerogel-type porous ceramics can be used as a super thermal insulation material and can be widely applied to fields of purification separation,