The present invention relates to novel, organically modified aerogels, uses thereof, and a process for producing them in which a) a hydrogel is introduced as an initial charge, b) the hydrogel obtained in step a) is subjected to surface modification, and c) the surface-modified gel obtained in step b) is dried. The present invention additionally relates to novel, organically modified wet gels, to a process for producing them, and to their use.

Organically modified aerogels, processes for their preparation by surface modification of the aqueous gel, without prior solvent exchange, and subsequent drying, and their use

Aerogel composite materials having a lofty fibrous batting reinforcement preferably in combination with one or both of individual short randomly oriented microfibers and conductive layers exhibit improved performance in one or all of flexibility, drape, durability, resistance to sintering, x-y thermal conductivity, x-y electrical conductivity, RFI-EMI attenuation, and/or burn-through resistance.

Aerogel composite with fibrous batting

Silica aerogels are popular in terms of production volume and real-world applications. Although the current market growth rate is driven exclusively by thermal insulation, aerogels may also be attractive for acoustic applications with the potential in aiding sound absorption/insulation. This paper is a summary of the acoustics related studies of silica aerogel-based products. It introduces silica aerogels, some acoustic characterization methods, and reviews systematically the available data on sound absorption/insulation of silica aerogels, polymer-silica aerogel composites, nonwoven-silica aerogel blankets, and aerogel renders/glazing. The work identifies areas where further research is required, including experimental and theoretical work on the physics of sound absorption in mesoporous materials, and more systematic and standardized evaluations of the acoustic properties of aerogel and aerogel-composites. Aside from this call to action, the opportunities and barriers for the commercialization of silica aerogel products for acoustic applications are presented.

A review on silica aerogel-based materials for acoustic applications

A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.

Aerogel/ptfe composite insulating material

Compositions include an aerogel component and have low thermal conductivity. Methods for preparing slurries or composites include, for example combining the aerogel component with a surfactant, binder and other ingredients, such as, for instance, fibers. The compositions can be slurries that can be used in coating applications or self supporting rigid composites.

Aerogel compositions and methods of making and using them

The present invention relates to a composite material that contains 5 to 97%-vol aerogel particles and at least one adhesive and that is characterised in that the diameter of the aerogel particles is smaller than 0.5 mm, a process for manufacturing this, and the use thereof.

Aerogel and adhesive-containing composite, process for its production and its use

Multilayer composite materials with at least one aerogel-containing layer and at least one other layer, a process for producing the same and their use are disclosed. The aerogel-containing layer(s) further contain at least one binder.

Multilayer composite materials with at least one aerogel-containing layer and at least one other layer, process for producing the same and their use

Multilayer composite materials with at least one aerogel-containing layer and at least one layer containing polyethylene terephthalate fibres, process for producing the same and their use.

Multilayer composite materials with at least one aerogel-containing layer and at least one layer containing polyethylene terephthalate fibres, process for producing the same and their use

A method is disclosed for the structural agglomeration of aerogel particles The method comprises the steps of feeding aerogel particles to a mixing apparatus A binder also is added to the mixing apparatus After thorough mixing agglomerates from the mixing apparatus optionally are separated according to their size

Method for granulating aerogels

A method of compacting aerogels into larger aerogel particles is disclosed. The method provides for molding small aerogel particles into larger aerogel particles and selecting a desired granular range of the molded aerogel particles. Additives, fillers, and binders may be added to the aerogel particles to achieve specific desired properties of the molded aerogel particles.

Method for compacting aerogels

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