Results 21 to 30 of about 242,895 (228)
Dielectric Response of Silica Aerogels [PDF]
Defect and Diffusion Forum, 1987 The dielectric response of porous silica aerogel prepared by hypercritical drying of gels from hydrolysis of TMOS — Methanol solution have been measured between 1.6 K to 300 K and frequencies between 50 and 10 5 Hz. The ɛ' value of the porous gels is found practically constant between room temperature and 100K but smaller than of fused silica. A sharp
Da Silva, Adao A. +2 more
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Merging flexibility with superinsulation: Machinable, nanofibrous pullulan-silica aerogel composites
Materials & Design, 2018 Freeze-dried nanofibrous scaffolds are flexible, but typically have high thermal conductivities. Conversely, silica aerogel has an ultra-low thermal conductivity, but is brittle. Here, the impregnation of pullulan/PVA nanofiber scaffolds with hydrophobic
Shanyu Zhao +5 more
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Improving the thermal performance of single-glazed windows using translucent granular aerogel [PDF]
, 2011 Copyright @ 2011 Taylor & FrancisCost-effective materials, products and installation methods are required to improve the energy efficiency of the UK's existing building stock.
Craig, S +3 more
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Tapered fibers embedded in silica aerogel [PDF]
Optics Letters, 2009 We have embedded thin tapered fibers (with diameters down to 1 microm) in silica aerogel with low loss. The aerogel is rigid but behaves refractively like air, protecting the taper without disturbing light propagation along it. This enables a new class of fiber devices exploiting volume evanescent interactions with the aerogel itself or with dopants or
Xiao, L M +6 more
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Frontiers in Materials, 2021 A new flexible thermal insulation sheet, a composite of silica aerogel with polypropylene (PP) foam, has been developed. Even though a large volume ratio of silica aerogel (97%) was included, the composite showed high flexibility. Thermal conductivity of
Satoshi Yoda +4 more
doaj +1 more source
Preparation of Fiber Reinforced Silica Aerogel Block [PDF]
MATEC Web of Conferences, 2021 Silica aerogels are lightweight, highly porous nanomaterial with extremely large internal surface area but fragile and brittleness. To enhance the applicability of aerogels, fiber reinforced silica aerogel insulation blocks are prepared by frothing ...
Zhai Shuning +6 more
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Comparative Study of Microwave-Assisted and Supercritical Drying for the Synthesis of Highly Porous Silica Aerogel: A Promising Adsorbent for Phenol Removal from Wastewater [PDF]
Iranian Journal of Chemistry & Chemical EngineeringThe removal of phenol from wastewater is crucial because of its harmful influences on human health, soil quality, and aquatic ecosystems. Among the different methods used for phenol removal, adsorption has gained popularity as an affordable and effective
Hamid Kazemi Hakki +4 more
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Absorption capacity, kinetics and mechanical behaviour in dry and wet states of hydrophobic DEDMS/TEOS-based silica aerogels [PDF]
, 2017 This work is a new approach to the study of the structural, mechanical and absorption properties of hybrid organic/inorganic silica-based aerogels. Diethoxydimethylsilane and tetraethoxysilane have been used as precursors.
Braza, Verónica +5 more
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Frontiers in Materials, 2021 A robust silica–polyimide (PI) aerogel blanket is designed and synthesized using the PI foam as the matrix and silica aerogel as the filler through an in situ method, where sol–gel transition of silica precursor occurs in pores of the PI foam, followed ...
Riyong Liu +5 more
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Experimental study on influence of aggregate gradation on properties of silica aerogel-glazed hollow beads composite insulation mortar [PDF]
E3S Web of Conferences, 2021 Taking the defects of narrow range of particle gradation of glazed hollow beads and low mechanical strength of silica aerogel into consideration, silica aerogel and glazed hollow bead have been mixed for the composite aggregate of insulation mortar. Some
Yiren Wang +3 more
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