Results 11 to 20 of about 13,503 (229)

Fractal Structure in Silica and Composites Aerogels [PDF]

open access: yesGels, 2020
Silica aerogels are known to be materials with exceptional characteristics, such as ultra-low density, high surface area, high porosity, high adsorption, and low-thermal conductivity.
Thierry Woignier   +9 more
doaj   +4 more sources

Transparent Aerogels with High Mechanical Strength Composed of Cellulose-silica Cross-linked networks

open access: yesMATEC Web of Conferences, 2016
We prepared monolithic transparent composite aerogels with high mechanical strength composed of cellulose-silica interpenetrating polymer network (IPN) structures.
Zhou Qing   +4 more
doaj   +4 more sources

A Review of High-Temperature Resistant Silica Aerogels: Structural Evolution and Thermal Stability Optimization [PDF]

open access: yesGels
Silica aerogels exhibit exceptionally low thermal conductivity and a low apparent density, as they are unique porous nanomaterials. They are extensively used in thermal insulation in terms of aerospace and building construction, adsorption processes for ...
Zhenyu Zhu   +5 more
doaj   +2 more sources

The Synthesis and Polymer-Reinforced Mechanical Properties of SiO2 Aerogels: A Review

open access: yesMolecules, 2023
Silica aerogels are considered as the distinguished materials of the future due to their extremely low thermal conductivity, low density, and high surface area.
Wang Zhan   +8 more
doaj   +1 more source

Overview of organic–inorganic hybrid silica aerogels: Progress and perspectives

open access: yesMaterials & Design, 2022
Silica aerogels are futuristic materials. However, the real-world applications of these materials are limited owing to their fragility. A variety of composite materials have been investigated to overcome this barrier.
Puttavva Meti   +6 more
doaj   +1 more source

Effects of mechanical grinding on the physicochemical properties of silica aerogels

open access: yesFrontiers in Materials, 2023
Mechanical grinding is a facile method to get silica aerogels (SAs) with various particle sizes. However, the relationship between the grinding parameters and physicochemical properties is still unclear.
Rutian Li   +7 more
doaj   +1 more source

Composite Aerogel for Heat Insulation

open access: yesChemical Engineering Transactions, 2020
Silica aerogels are often brittle and MTMS is rather expensive. Therefore, it is necessary to strengthen MTMS silica aerogels and lower their cost. In this research, hydrophobic composite monolithic methyltrimethoxysilane (MTMS) based aerogels were ...
Oanh T. H. Cao   +5 more
doaj   +1 more source

Dielectric Response of Silica Aerogels [PDF]

open access: yesDefect 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
openaire   +1 more source

A review on heat transfer in nanoporous silica aerogel insulation materials and its modeling

open access: yesEnergy Storage and Saving, 2022
Silica aerogels are widely used in many fields for thermal insulation, such as building insulation, electric power energy, energy storage systems, and high-temperature thermal protection due to their excellent insulation performance.
Chuan-Yong Zhu   +4 more
doaj   +1 more source

Digital Light Processing 3D‐Printed Silica Aerogel and as a Versatile Host Framework for High‐Performance Functional Nanocomposites

open access: yesAdvanced Science, 2022
Vat‐photopolymerization‐based 3D printing enables on‐demand construction of customized objects with scalable production capacity and high precision. Herein, the sol‐gel process for aerogels with digital light processing 3D printing to produce advanced ...
Weizhi Zou   +4 more
doaj   +1 more source

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