A system and method for producing an aerogel composite material includes a reaction vessel having a movable carrier basket for receiving a plurality of fiber mats, and a plurality of plates to space the fiber mats apart from one another. Once the plates have been removed, there are gaps between the aerogel insulating boards, through which hot drying air can be blown during a drying process. The method has the advantage that the quantities of solvents and reagents to be disposed of are minimal, and in addition thereto, no complex work-up processes are necessary.

A system and method for producing an aerogel composite material includes a reaction vessel having a movable carrier basket for receiving a plurality of fiber mats, and a plurality of plates to space the fiber mats apart from one another. Once the plates have been removed, there are gaps between the aerogel insulating boards, through which hot drying air can be blown during a drying process. The method has the advantage that the quantities of solvents and reagents to be disposed of are minimal, and in addition thereto, no complex work-up processes are necessary.

A method for producing an inorganic silica gel fiber or aerogel fiber, comprising the following steps: a) extrusion of a gel, in particular a hydrogel or alcogel, by means of a spinneret directly into a coagulation bath to form at least one filament, b) stretching of the filament in the coagulation bath, c) regeneration of the filament by extraction from the coagulation bath, and d) supercritical drying or freeze drying in order to convert the filament into a silica fiber, in particular an aerogel fiber.

A method for producing an inorganic silica gel fiber or aerogel fiber, comprising the following steps: a) extrusion of a gel, in particular a hydrogel or alcogel, by means of a spinneret directly into a coagulation bath to form at least one filament, b) stretching of the filament in the coagulation bath, c) regeneration of the filament by extraction from the coagulation bath, and d) supercritical drying or freeze drying in order to convert the filament into a silica fiber, in particular an aerogel fiber.

A method of cementing a subterranean formation includes providing a cement composition comprising cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier, where the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. Cement compositions include cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier.

A method of cementing a subterranean formation includes providing a cement composition comprising cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier, where the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. Cement compositions include cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier.

The present invention relates to a process for producing a hydrophobized shaped thermal-insulation body, comprising pressing or compacting a thermal-insulation mixture containing a silica, an IR opacifier, an organosilicon compound A and an organosilicon compound B, wherein organosilicon compound A is hexamethyldisilazane (HMDS) and organosilicon compound B corresponds to a substance of the formula R.sub.nSiX.sub.4-n, where R=hydrocarbyl radical having 1 to 18 carbon atoms, n=0, 1 or 2, X=Cl, Br or alkoxy group OR.sup.1 where R.sup.1=hydrocarbyl radical having 1 to 8 carbon atoms, or organosilicon compound B corresponds to a silanol of the formula HO[Si(CH.sub.3).sub.2O].sub.mH, where m=2-100.

The present invention relates to a process for producing a hydrophobized shaped thermal-insulation body, comprising pressing or compacting a thermal-insulation mixture containing a silica, an IR opacifier, an organosilicon compound A and an organosilicon compound B, wherein organosilicon compound A is hexamethyldisilazane (HMDS) and organosilicon compound B corresponds to a substance of the formula R.sub.nSiX.sub.4-n, where R=hydrocarbyl radical having 1 to 18 carbon atoms, n=0, 1 or 2, X=Cl, Br or alkoxy group OR.sup.1 where R.sup.1=hydrocarbyl radical having 1 to 8 carbon atoms, or organosilicon compound B corresponds to a silanol of the formula HO[Si(CH.sub.3).sub.2O].sub.mH, where m=2-100.

The invention relates to a device, which operates at high temperature, in particular up to 550 C., and in particular between 50 and 350 C., such as an oven or a part of an oven, this device being equipped with at least one insulating product formed from at least one insulating material ,based>on aerogel(s), advantageously in the form of at least one layer, in particular of at least one fibrous layer. based on aerogel(s), said product comprising less than 0.55% by weight of hydrophobizing agent(s).

The invention also relates to the insulating product suitable for this device and to the use of this product for a high-temperature application.

The invention relates to a device, which operates at high temperature, in particular up to 550 C., and in particular between 50 and 350 C., such as an oven or a part of an oven, this device being equipped with at least one insulating product formed from at least one insulating material ,based>on aerogel(s), advantageously in the form of at least one layer, in particular of at least one fibrous layer. based on aerogel(s), said product comprising less than 0.55% by weight of hydrophobizing agent(s).

The invention also relates to the insulating product suitable for this device and to the use of this product for a high-temperature application.