The present invention provides an aerogel blanket including a blanket base, aerogel coupled on the surface of the blanket base, and aerogel located at a space between the blanket bases, the aerogel coupled on the surface of the blanket base is 50 wt % based on the total weight of aerogel, wherein the aerogel blanket has the number of aerogel particles separated from the aerogel blanket ranging from 13,600 to 90,000 per ft.sup.3, when vibrating the aerogel blanket at a frequency of 1 Hz to 30 Hz for 2 hours to 10 hours.

Provided is a method for purifying a waste solvent by removing carbon dioxide contained in a waste solvent derived from supercritical waste liquid generated after supercritical drying by a decompression process, and removing ammonia by a multi-stage distillation process to obtain a solvent of high purity, which can be reused in producing silica aerogel or a silica aerogel blanket.

The present invention provides a method for producing an aerogel, comprising a sol generating step of generating, by hydrolyzing a silane oligomer, a sol containing a hydrolysis product of the silane oligomer; a wet gel generating step of obtaining a wet gel by gelation of the sol; and a drying step of drying the wet gel to obtain an aerogel, wherein a proportion of silicon atoms each bonded to three oxygen atoms in a total number of silicon atoms contained in the silane oligomer is 50% or more.

The present invention provides a method for producing an aerogel, comprising a sol generating step of generating, by hydrolyzing a silane oligomer, a sol containing a hydrolysis product of the silane oligomer; a wet gel generating step of obtaining a wet gel by gelation of the sol; and a drying step of drying the wet gel to obtain an aerogel, wherein a proportion of silicon atoms each bonded to three oxygen atoms in a total number of silicon atoms contained in the silane oligomer is 50% or more.

A method of forming a porous sol gel, including a dried porous sol gel, is provided comprising forming a sol gel from a sol gel-forming composition comprising a silane solution and a catalyst solution; and non-supercritically drying the sol gel to provide a dried porous sol gel having no springback. The dried porous sol gel can include dried macroporous or mesoporous sol gels or dried hybrid aerogels. The materials may contain open or filled pores. Such materials are useful as thermal insulators.

A method of forming a porous sol gel, including a dried porous sol gel, is provided comprising forming a sol gel from a sol gel-forming composition comprising a silane solution and a catalyst solution; and non-supercritically drying the sol gel to provide a dried porous sol gel having no springback. The dried porous sol gel can include dried macroporous or mesoporous sol gels or dried hybrid aerogels. The materials may contain open or filled pores. Such materials are useful as thermal insulators.

The present invention relates to a method for manufacturing an aerogel blanket, the method including 1) introducing a catalyzed sol and a substrate for a blanket into a reaction vessel to impregnate the catalyzed sol into the substrate for a blanket, and 2) rotating the substrate for a blanket into which the catalyzed sol is impregnated to perform gelation, wherein the catalyzed sol includes a silica precursor composition, and the silica precursor composition includes a silicate containing a hydrophobic group and a tetraalkyl silicate, wherein a molar ratio of the silicate containing a hydrophobic group and the tetraalkyl silicate is 60:40 to 98:2.

The present invention relates to a method for manufacturing an aerogel blanket, the method including 1) introducing a catalyzed sol and a substrate for a blanket into a reaction vessel to impregnate the catalyzed sol into the substrate for a blanket, and 2) rotating the substrate for a blanket into which the catalyzed sol is impregnated to perform gelation, wherein the catalyzed sol includes a silica precursor composition, and the silica precursor composition includes a silicate containing a hydrophobic group and a tetraalkyl silicate, wherein a molar ratio of the silicate containing a hydrophobic group and the tetraalkyl silicate is 60:40 to 98:2.

The present invention provides a thermal insulation composition and a preparation method and application. The thermal insulation composition is composed of aerogel material and organic resin; the composite mass ratio of the aerogel material to the organic resin is 5 wt %:95 wt % to 50 wt %:50 wt %; the porosity of the aerogel material is greater than 95%, the pore diameter of the aerogel material is less than or equal to 100 nm, the particle size of each particle of aerogel material is 5 nm to 20 nm, and the organic resin is filled in the pores of the aerogel material. The thermal insulation module component prepared from the thermal insulation composition has mechanical strength and thermal conductivity at room temperature, and if the battery goes into thermal runaway, the material becomes a heat-insulating material, blocking the heat transfer between battery cells, greatly improving the safety performance of the battery.

The present invention provides a thermal insulation composition and a preparation method and application. The thermal insulation composition is composed of aerogel material and organic resin; the composite mass ratio of the aerogel material to the organic resin is 5 wt %:95 wt % to 50 wt %:50 wt %; the porosity of the aerogel material is greater than 95%, the pore diameter of the aerogel material is less than or equal to 100 nm, the particle size of each particle of aerogel material is 5 nm to 20 nm, and the organic resin is filled in the pores of the aerogel material. The thermal insulation module component prepared from the thermal insulation composition has mechanical strength and thermal conductivity at room temperature, and if the battery goes into thermal runaway, the material becomes a heat-insulating material, blocking the heat transfer between battery cells, greatly improving the safety performance of the battery.