A scalable crosslinked fiberglass-aerogel thermal insulation composite

An, Lu; Wang, Jieyu; Petit, Donald; Armstrong, Jason N.; Li, Changning; Hu, Yong; Huang, Yulong; Shao, Zefan; Ren, Shenqiang

doi:10.1016/j.apmt.2020.100843

Cited by 36 publications

(27 citation statements)

References 39 publications

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“…More interestingly, reasonable values of thermal conductivity (0.032-0.033 W/m.K) were obtained for the first and fourth samples. This behaviour could be attributed to the higher amount of fiberglass in these two samples [15].…”

Section: Figurementioning

confidence: 86%

Fabrication of cellulose-based aerogel for thermal and acoustic insulation applications

Thai

Chau

Nam

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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A method to prepare aerogels from rice straw and polyvinyl alcohol in the presence of fiberglass and glutaraldehyde is herein reported. The morphology, pore structure and physical properties of the aerogels were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), thermal conductivity, water contact angle (WCA) measurements, oil adsorption and sound absorption measurements. The obtained aerogels should be considered as a promising material for upcoming applications, since it has high porosity (up to 93.72%), low density (0.083-0.127 g/cm3), super low thermal conductivity (0.032-0.048 W/mK), high Young modulus (0.201-1.207 MPa), high sound absorption (absorption coefficient of 0.87) and a good oil adsorption capacity (4.8 g/g).

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Section: Figurementioning

confidence: 86%

Fabrication of cellulose-based aerogel for thermal and acoustic insulation applications

Thai

Chau

Nam

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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“…Aerogel insulations also have excellent acoustic, protective and catalytic properties. Moreover, they are used as absorbents, scaffolds, sensors and filters [25][26][27].…”

Section: Aerogel Materials As Insulationmentioning

confidence: 99%

Exceeding the Applicability Limit of Aerogel Super Insulation Materials in Different Environmental Conditions

Lakatos

2020

Applied Sciences

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Newly designed and constructed buildings are subjected to increasingly strict regulations which emphasize the minimization and, where possible, the elimination of wasteful energy consumption, thus resulting in a decrease in emissions. Thermal insulation materials have an important role in making better use of the primary energy delivered to consumer systems, be it by an industrial process or building services systems or in residential and commercial buildings. It is well declared that buildings account for about 30% of total energy consumption, while they contribute to about 20% of greenhouse gas emissions. High-performance insulation has great potential to achieve the European Commission’s ambitious goals for reducing the thermal loss of buildings. A new class of super insulation materials (SIMs) could play an important role in the future of insulations (e.g., fiber-reinforced silica aerogel). This material is grouped with super insulation materials by the sixty-fifth annex of the International Energy Agency. However, due to their short presence on the market, we do not know much about their long-term performance, and if their properties change with time, the question is how and in which direction they do. This is why their artificial aging is so important through thermal annealing, in addition to exposing them to high humidity and low temperatures. In this paper, the application of measurement results after the artificial aging of fiber-reinforced silica aerogel will be discussed. In order to see the changes in the thermal insulation capability of the materials, 13 different cases of environmental exposures are discussed. These cases will be presented to see possible changes in the thermal insulation performance of the aerogel after treating it in different climatic conditions. Firstly, samples were exposed to humidity treatments at 296 K with different relative humidities (0, 35, 50, 65, 80 and 90%) until they reached equilibrium moisture contents. Secondly, the samples were heat treated once for 6 weeks at 343 K, then for 1 day at 373, 423, 453 and 483 K. Moreover, we wanted to see the effects of frost, and thus we executed a freeze–thaw cycle on the samples for 25 days between 258 and 303 K. After these curing procedures, the thermal conductivities of the samples were measured with a heat flow meter, according to the ISO 8301 standard. The measured thermal conductivity values after heat treatment, wetting and freezing were used for building energetics calculations, with a special focus on the thermal transmittance of two different hypothetical building structures (brick- and concrete-based walls) covered with the mentioned insulation.

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“…Insulated panels are three layered plane structures where an insulation, typically polystyrene or polyurethane, is sandwiched between two thin skin layers of polymeric sheets bonded to each side, usually a glass fiber/resin composite. Different energy reduction techniques have been explored for these vehicles, mainly focused on the use of different insulation materials with low thermal conductivity, such as porous polymer foams [ 7 ], aerogels or xerogels [ 8 , 9 ], and the optimization of insulation thickness [ 6 ]. However, some of these insulation materials are costly and difficult to produce.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Photocatalytic Performance of Unsaturated Polyester Resins Modified with TiO2 Nanoparticles as Panel Bodies for Vehicles

et al. 2021

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The transport sector is the fastest growing contributor to climate emissions and experiences the highest growth in energy use. This study explores the use of TiO2 nanoparticles for obtaining photocatalytic nanocomposites with improved infrared reflectance properties. The nanocomposites were prepared by dispersing 0–20 wt% of TiO2 nanoparticles in an unsaturated polyester resin. The effect of TiO2 on the curing kinetics was studied by differential scanning calorimetry, showing a significant delay of the curing reactions. The thermal reflectance of the modified resins was characterized by UV-Vis-NIR spectrophotometry, measuring total solar reflectance (TSR). The TiO2 greatly increased the TSR of the resin, due to the reflectance properties of the nanoparticles and the change in color of the modified resin. These nanocomposites reflect a significant part of near-infrared radiation, which can contribute to a reduction of the use of heating, ventilation, and air conditioning. Moreover, the photocatalytic effect of the TiO2 modified nanocomposites was studied by monitoring the degradation of an organic model contaminant in an aqueous medium under UV light, and the reusability of the nanocomposites was studied with 5 cycles. The developed nanocomposites are proposed as a solution for reducing global warming and pollutant emissions.

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A scalable crosslinked fiberglass-aerogel thermal insulation composite

Cited by 36 publications

References 39 publications

Fabrication of cellulose-based aerogel for thermal and acoustic insulation applications

Fabrication of cellulose-based aerogel for thermal and acoustic insulation applications

Exceeding the Applicability Limit of Aerogel Super Insulation Materials in Different Environmental Conditions

Thermal and Photocatalytic Performance of Unsaturated Polyester Resins Modified with TiO2 Nanoparticles as Panel Bodies for Vehicles

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