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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

Novel Al₂O₃-SiO₂ composite aerogels with high specific surface area at elevated temperatures with different alumina/silica molar ratios prepared by a non-alkoxide sol-gel method

Author(s): Gaofeng Shao, Ling Wang, Sheng Cui, Xiaodong Shen, Xiaodong Wu

This study investigated new sol-gel methods in the fabrication of Al₂O₃ - SiO₂ composite aerogels. Compared to conventional methods, the Al₂O₃ - SiO₂ composite aerogels were prepared and ...

Keywords: Aerogel, aluminum, composites, heat treatment, Hot Disk, pore structure, Silica, Thermal Conductivity, Transient plane source (TPS) method

Hybrid graphene aerogels/phase change material composites: Thermal conductivity, shape-stabilization and light-to-thermal energy storage

Author(s): Bang-Hu Xie, Guo-Qiang Qi, Jie Yang, Ming-Bo Yang, Rui-Ying Bao, Wei Yang, Yang Liu, Zheng-Ying Liu

The use of graphene aerogel has recently been studied with highly functional phase change materials (PCMs) to create 3D structures for improved thermal conductivity and shape-stabilization. In this study, hybrid ...

Keywords: 3D structure, Graphene nanoplatelets, graphene oxide, Hot Disk, Hybrid graphene aerogels, phase change materials, Thermal Conductivity, Transient plane source (TPS)

Effect of the thermal treatment on microstructure and physical properties of low-density and high transparency silica aerogels via acetonitrile supercritical drying

Author(s): Ai Du, Bin Zhou, Guangwu Liu, Jun Shen, Qiujie Yu

Silica aerogels have extremely low thermal conductivities, potentially making them effective thermal insulators. In this study, the thermal conductivities of various samples were explored using the Hot Disk Transient Plane ...

Keywords: High homogeneous density, Hot Disk, Hot Disk TPS 2500, low-density, porous materials, Silica aerogels, Thermal Conductivity, thermal insulation, Thermal treatment, Transient Plane Source, Transient plane source (TPS) method

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, Hot Disk, 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, Hot Disk, 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: Hot Disk, 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), Hot Disk TPS, hybridized aerogels, multi-walled carbon nanotubes, Multi-walled carbon nanotubes (MWCNTs), MWCNTs, resin, RF, Seebeck coefficient, Thermal Conductivity, ZT

Novel lightweight and highly thermally insulative silica aerogel-doped poly (vinyl chloride)-coated fabric composite

Author(s): Dan Åkesson, Mikael Skrifvars, Mohammad J. Taherzadeh, Mostafa Jabbari

In this research silica aerogels were incorporated into PVC fabrics by the research team to improve the overall performance of the fabrics. The aerogel was added in percent fractions of 0, 2, 3, ...

Keywords: density, Hot Disk TPS 2500 S, PVC fabrics, Silica aerogels, thermal insulation, weight

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

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