Results 21 to 30 of about 13,503 (229)

Preparation of silica aerogels with high temperature resistance and low thermal conductivity by monodispersed silica sol

open access: yesMaterials & Design, 2020
Silica aerogels with different particle size were prepared by monodispersed silica sol for the first time. The properties of the silica aerogels under normal and high temperature were systematically studied.
Huafei Cai   +7 more
doaj   +1 more source

A silica aerogel-based thermal insulation composite film for metal surfaces in gas industries

open access: yesResults in Surfaces and Interfaces, 2023
Silica aerogels are ultralight superinsulators that can increase the efficiency of insulation materials up to three times. In this study, hydrophobic silica aerogels were synthesized using an inexpensive and available water-glass precursor at ambient ...
Asma Zare, Hassan Hadadzadeh
doaj   +1 more source

Transparent thermal insulation silica aerogels. [PDF]

open access: yesNanoscale Adv, 2020
This review explores the synthesis and properties of transparent thermal insulation silica aerogels.
Wang J, Petit D, Ren S.
europepmc   +4 more sources

Absorption capacity, kinetics and mechanical behaviour in dry and wet states of hydrophobic DEDMS/TEOS-based silica aerogels [PDF]

open access: yes, 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
core   +1 more source

Reinforced silica-carbon nanotube monolithic aerogels synthesised by rapid controlled gelation [PDF]

open access: yes, 2018
This work introduces a new synthesis procedure for obtaining homogeneous silica hybrid aerogels with carbon nanotube contents up to 2.50 wt.%. The inclusion of nanotubes in the highly porous silica matrix was performed by a two-step sol–gel process ...
Díaz-Fraile, José A.   +8 more
core   +2 more sources

Eco-friendly approach for preparation of water-based superhydrophobic silica aerogels via ambient pressure drying

open access: yesMaterials Research Express, 2021
In this work, superhydrophobic methyltrimethoxysilane (MTMS)-based silica aerogels were fabricated via water-based sol–gel reaction by ambient pressure drying (APD) method in the presence of surfactant.
Xiaoling Yuan   +5 more
doaj   +1 more source

Nitrogen sorption as a tool for the characterisation of polysaccharide aerogels [PDF]

open access: yes, 2011
Supercritically dried aerogels of several polysaccharides (chitin, chitosan, alginate, alginic acid, k- carrageenan, and agar) have been characterised by physisorption ofN2. Surface areas as high as 570m2 g−1 have been measured.
Boissière, M.   +7 more
core   +3 more sources

Biological Thermal Performance of Organic and Inorganic Aerogels as Patches for Photothermal Therapy

open access: yesGels, 2022
Aerogels are materials with unique properties, among which are low density and thermal conductivity. They are also known for their exquisite biocompatibility and biodegradability.
Tânia Ferreira-Gonçalves   +13 more
doaj   +1 more source

Bioactivity of wollastonite/aerogels composites obtained from a TEOS-MTES matrix [PDF]

open access: yes, 2008
Organic-inorganic hybrid materials were synthesized by controlled hydrolysis of tetraethoxysilane (TEOS), methyltrimethoxysilane (MTES), synthetic wollastonite powders and polydimethylsiloxane (PDMS) in an ethanol solution.
Esquivias Fedriani, Luis María   +6 more
core   +1 more source

From Fragile to Resilient Insulation: Synthesis and Characterization of Aramid-Honeycomb Reinforced Silica Aerogel Composite Materials

open access: yesGels, 2015
The production of a new composite material embedding aramid honeycomb materials into nano-porous silica aerogels is studied. Our aim is to improve the poor mechanical strength of silica aerogels by aramid honeycombs without losing the amazing properties ...
Marina Schwan   +3 more
doaj   +1 more source

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