High strength SiO2 aerogel insulation

Cold Climate Building Enclosure Solutions

“…To advance understanding of this topic, Fraunhofer CSE is partnering with Dow Corning Inc. and Dryvit Inc. on a DOE-funded project and with Aspen Aerogel Inc. on a Department of Defense funded project to investigate the hygrothermal behavior of high performance materials such as VIPs and aerogel. 13,14 …”

“…The team assumed that the rigid boards are installed in the form of an exterior sheathing, and the foam is sprayed either in between added studs or between exterior furrings. 13 See http://apps1.eere.energy.gov/buildings/publications/pdfs/building_america/ns/plenary_2_emerging_tech.pdf for more information. 14 See http://www.sbir.gov/sbirsearch/detail/12181 for more information.…”

“…24 Although the reinforcement process gives mechanical strength and flexibility to the aerogel, it can result in an undesirable increase in the thermal conductivity and density of the resulting aerogel composite [13]. 25 This thermal conductivity increase can be minimized by using lower volume fractions of inferior, thermally conductive fibers as long as the mechanical requirements for the areogel application are satisfied.…”

Resistive humidity sensors based on proton-conducting organic–inorganic silicophosphates doped by polyionenes

“…At that, an imperative moment is a possibility of directional change of a structure of nanocomposites synthesized with variation of character and topology not only precursors of sol-gel processes, but organic low-and high-molecular organic compounds and inorganic salts and acids. Thus, nonlinear optical [5], heat-sensitive [6] and insulating nanocomposite materials [7] can be synthesized by sol-gel method. At that, it is succeed to form highly porous monolithics with nanopores [7], materials with pore size controlled [8], gasdiffusion electrodes [9], membranous materials [10] including templates [11], thin nano-size films and coatings [12], nano-structured thin films [13], water-repellent coatings [14], composite and hybrid organic-inorganic materials contained nano-sized inclusions of oxides [15], inorganic salts crystalline hydrate [16], metals catalysts [17], catalyst carriers [18], surface active compounds [19], organic fragments [3], high-molecular fragments [4], templates [20], catalytically active complexes [21], nontoxic corrosion inhibitors [22] or special additives as pigment [23], luminophors [24], colorants and chromophores [25], biologically active substances [26], biomolecules [27].…”

A new route for preparation of sodium-silicate-based hydrophobic silica aerogels via ambient-pressure drying

“…These unique materials exhibit many fascinating properties, which include a very low density (∼3 kg m −3 ), low thermal conductivity (∼0.02 W mK −1 ), a low refractive index (∼1.01 to 1.1), high optical transparency (∼90%) and a high surface area (∼1600 m 2 g −1 ) [1,2]. Because of these properties, silica aerogels are employed in nuclear reactors as Cerenkov radiation detectors, containers for liquid rocket propellants, thermal superinsulators for solar energy systems, refrigerators, windows and air conditioning systems [3][4][5][6][7].…”