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Search Results for: aerogels

Total Papers Found: 19
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Monodisperse Hollow Silica Nanospheres for Nano Insulation Materials: Synthesis, Characterization, and Life Cycle Assessment

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This article reported on the synthesis, characterization, life cycle assessment (LCA) of nano insulation materials (NIMs) that are made of hollow silica nanospheres (HSNSs). The transient plane source (TPS) technique ...

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Flame Retardant, Heat Insulating Cellulose Aerogels from Waste Cotton Fabrics by in Situ Formation of Magnesium Hydroxide Nanoparticles in Cellulose Gel Nanostructures

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Aerogels are promising thermal insulators because of their low thermal conductivity, durability and eco-friendly nature. However, aerogels become a problem because of their highly flammable properties. In this study, flame ...

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Facile preparation of fracture-free pectin/clay aerogel monoliths

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Clay aerogels are typically used for insulation, filtration and absorption, and are typically favored because of their eco-friendly nature, low density and high porosity. Unfortunately, these aerogels are limiting due ...

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Assembly of silica aerogels within silica nanofibers: towards a super-insulating flexible hybrid aerogel membrane

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Silica aerogels (SA) are identified as one of the most advanced thermal insulating materials to date, however, their range of applications is limited due to a high sensitivity to moisture ...

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Enhanced thermoelectric properties of hybridized conducting aerogels based on carbon nanotubes and pyrolyzed resorcinol–formaldehyde resin

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Multi walled carbon nanotubes (MWCNTs) and carbonized resorcinol-formaldehyde (RF) resin were used to create a conducting aerogel with a high electrical conductivity and Seebeck coefficient but a low thermal conductivity. ...

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Influence of thermal process on microstructural and physical properties of ambient pressure dried hydrophobic silica aerogel monoliths

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Ambient pressure dried hydrophobic silica aerogel monoliths were prepared via simultaneous solvent exchange and surface modification in order to minimize volume shrinkage and density. At room temperature, the obtained silica ...

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Synthesis and characterization of silica aerogel and its composite materials

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Composite silica aerogels were prepared using sodium silicate and ceramics fibers. The thermal conductivities of these composites were investigated to determine how effective they would be as thermal insulation. As ...

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Preparation and Characterization of Ultralow Density Silica Aerogels by Acetonitrile Supercritical Drying

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Ultralow density silica aerogels were formulated by sol-gel process using tetramethyl orthosilicate as the precursor. A supercritical drying step was performed using acetonitrile solvent extraction. These aerogels were found to ...

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Synthesis of flexible aerogel composites reinforced with electrospun nanofibers and microparticles for thermal insulation

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The authors present a method of increasing the structural stability of silica aerogels by producing flexible aerogel composites by electrospinning and sol-gel processing. Three composites, each reinforced with one of ...

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Investigation of transmittance and thermal conductivity properties of silica gels for application as transparent heat insulation materials

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In this article the effectiveness of silica aerogels as a transparent heat insulation material (TIM) is studied.  They are a good candidate for this application as the amount of energy ...

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