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

Author(s): Arild Gustavsen, Bjorn Petter Jelle, Linn Ingunn C. Sandberg, Tao Gao

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 ...

Keywords: embodied energy, Hollow silica nanospheres, life cycle assessment, Nano Insulation Materials, Thermal Conductivity, thermal insulation, Transient plane source (TPS) technique

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

Author(s): Canhui Lu, Xiaodong Wu, Xinxing Zhang, Yangyang Han

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 ...

Keywords: Aerogel, Cellulose aerogel, Flame retardant, Heat insulating, Nanoparticles, Template, Thermal Conductivity, thermal insulation, Transient Plane Source, Transient plane source (TPS) method, Waste cotton fabrics

Facile preparation of fracture-free pectin/clay aerogel monoliths

Author(s): H. Wu, Q. Chen, Y. Lua

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 ...

Keywords: Aerogel, Clay, composites, Freeze-drying, Pectin, Thermal Conductivity, thermal insulation, Transient Plane Source, Transient plane source (TPS) method

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

Author(s): Bin Ding, Haoru Shan, Hongxia Zheng, Jianyong Yu, Lifang Liu, Xianfeng Wang, Ying Bai

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 ...

Keywords: Silica aerogels, silica nanofiber, Thermal Conductivity, thermal insulation, Transient Plane Source

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

Author(s): Aiping Zhang, Jinghong Zhao, Jinrong Wu, Lijuan Zhao, Quan Li, Xijing Sun

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. ...

Keywords: Carbon nanotubes, carbonized resorcinol-formaldehyde, carbonized resorcinol-formaldehyde (RF), CNTs, Electrical Conductivity, Figure of Merit, Figure of Merit (ZT), hybridized aerogels, multi-walled carbon nanotubes, Multi-walled carbon nanotubes (MWCNTs), MWCNTs, resin, RF, Seebeck coefficient, Thermal Conductivity, ZT

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

Author(s): Ai Du, Bin Zhou, Guangming Wu, Guangwu Liu, Guoqing Zu, Jun Shen, Xing Yuan Ni, Xingyuan Ni

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 ...

Keywords: Apparent Density, BET Method, Brunauer-Emmett-Teller, Brunauer-Emmett-Teller (BET), differential scanning calorimetry, Differential scanning calorimetry (DSC), DSC, Fourier transform infrared spectroscopy (FTIR), Fourier-Transform Infrared Spectroscopy, FTIR, Pore Size Distribution, Pore Size Distribution (PSD), porosity, PSD, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, Silica aerogels, specific surface area, TGA, Thermal Conductivity, thermal insulation, Thermo Gravimetric Analyzer, Thermo Gravimetric Analyzer (TGA), Transient Plane Heat Source Method

Synthesis and characterization of silica aerogel and its composite materials

Author(s): Liu Guangwu, LiuYangang, Ni Xingyuan

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 ...

Keywords: ceramics, density, pore volume, Silica Aerogel Composite, specific surface area, Thermal Conductivity, thermal insulation, Transient Plane Heat Source Method

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

Author(s): Bin Zhou, Guang Wu Liu, Qiu Jie Yu, Xing Yuan Ni

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 ...

Keywords: density, Pore Size Distribution, SBET, SEM, Silica aerogels, specific surface area, Thermal Conductivity, thermal insulation, Transient Plane Heat Source Method

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

Author(s): Haitao Gao, Huijun Wu, Qiliang Chen, Xiaoqing Zhou, Yantao Chen, Yunfei Ding

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 ...

Keywords: Bending Modulus, Bulk Density, Compression Tests, Droplet Scanning Analysis, Droplet Scanning Analysis (DSA), DSA, Flexible Aerogel Composites, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, Surface Hydrophobicity, Thermal Conductivity Apparatus, Thermal Gravimetric Analyzer, thermal insulation

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

Author(s): Christos G. Aneziris, Friederike Klenert, Jens Fruhstorfer

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 ...

Keywords: Aerogels, hydrothermal treatment, Silica, silica gels, Thermal Conductivity, thermal insulation, TIM, transparent heat insulation materials, transparent heat insulation materials (TIM), Xerogels

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