Results 41 to 50 of about 499,894 (252)

Heat-Treated Aramid Pulp/Silica Aerogel Composites with Improved Thermal Stability and Thermal Insulation

open access: yesGels, 2023
In this work, we prepared heat-treated aramid pulp/silica aerogel composites (AP/aerogels) and investigated in detail the feasibility of improving thermal stability and thermal insulation via tailored heat treatment.
Zhi Li   +7 more
doaj   +1 more source

Streamlined life cycle assessment of transparent silica aerogel made by supercritical drying [PDF]

open access: yes, 2012
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2011 ElsevierWhen developing sustainable building fabric technologies, it is essential that the energy use and CO2 burden ...
Birks, T   +4 more
core   +1 more source

Tapered fibers embedded in silica aerogel [PDF]

open access: yesOptics 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
openaire   +2 more sources

Silica Aerogel Monoliths Derived from Silica Hydrosol with Various Surfactants

open access: yesMolecules, 2018
Owing to their ultra-low thermal conductivity, silica aerogels are promising thermal insulators; however, their extensive application is limited by their high production cost.
Dong Chen   +5 more
doaj   +1 more source

SILICA-AERO. Production of Lightweight Silica Aerogel Fibers for Excellent Heat Insulating Application

open access: yesChemical Engineering Transactions, 2017
Aerogels are today the lightest solids and the best thermal insulating materials in the world. Silica aerogels are the most common aerogels. On one hand, silica is inorganic, fire proof and thermal stable up to 900 °C; one the other hand, the material is
D. Pico   +4 more
doaj   +1 more source

Effects of Phenyltrimethoxysilane and Polyvinyl Alcohol on the Properties of Methyltrimethoxysilane-based Silica Aerogels

open access: yesChemical Engineering Transactions, 2020
Silica aerogels have attracted great attention owing to their outstanding properties such as ultralow density, high porosity, high surface area, and low thermal conductivities. Their poor mechanical properties and hydrophilicity constrain their practical
Son T. Nguyen   +10 more
doaj   +1 more source

Super-Insulating Transparent Polyisocyanurate-Polyurethane Aerogels: Analysis of Thermal Conductivity and Mechanical Properties

open access: yesNanomaterials, 2022
A family of transparent polyisocyanurate-polyurethane (PUR-PIR) aerogels with an interesting combination of physical properties were synthesized. First, their textural properties were analyzed aiming to study catalyst influence on the final porous ...
Beatriz Merillas   +2 more
doaj   +1 more source

Aerogels – Production, Properties and Applications

open access: yesKONA Powder and Particle Journal, 2014
Aerogels are highly porous sol-gel derived solids. Their properties, which are extremely fascinating as well as very promising for a large number of applications, are due to their nanostructure.
Thorsten Burger   +3 more
doaj   +1 more source

Inclusion of [H3PW12O40] and [H4SiW12O40] into a silica gel matrix via "sol-gel" methodology [PDF]

open access: yes, 2017
Indexación: Web of Science; Scopus.Here we report the inclusion of two Keggin Polyoxometalates (POMs), [H3PW12O40] and [H4SiW12O40], into silica gels by integrating them during the preparation of the SiO2 matrix via "sol-gel" methods.
Carey, D.M.   +4 more
core   +1 more source

Novel bioactive materials: silica aerogel and hybrid silica aerogel/pseudowollastonite

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2014
Silica aerogel and hybrid silica aerogel/pseudowollastonite materials were synthesized by controlled hydrolysis of tetraethoxysilane (TEOS) using also methanol (MeOH) and pseudowollastonite particles. The gels obtained were dried using a novel process based on an ambient pressure drying. Hexane and hexamethyl-disilazane (HMDZ) were the solvents used to
Reséndiz-Hernández, P. J.   +6 more
openaire   +2 more sources

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