Super-insulated, flexible, and high resilient mullite fiber reinforced silica aerogel composites by interfacial modification with nanoscale mullite whisker

Yi, Zhehan; Zhang, Xiang; Yan, Liwen; Huyan, Xudong; Zhang, Tao; Liu, Shan; Guo, Anran; Liu, Jiachen; Hou, Feng

doi:10.1016/j.compositesb.2021.109549

Cited by 49 publications

(25 citation statements)

References 70 publications

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“…Fibers with insitu synthesized mullite whiskers were prepared to strengthen aerogel and reduce the sensitivity of thermal conductivity to temperature. In-situ growth process enabled uniform distribution of mullite whiskers in aerogel composites to avoid thermal stress caused by uneven temperature distribution [22,23] .…”

Section: Introductionmentioning

confidence: 99%

SiO2 aerogel multiscale reinforced by glass fibers and SiC nanowhiskers for thermal insulation

Yang

Chen

et al. 2023

J Porous Mater

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SiO 2 aerogel attracts much interest as thermal insulation material due to ultra-low density and excellent thermal performance at room temperature. However, the poor mechanical property and a mass of heat transfer by radiation in high temperature limit application of aerogels. Herein, a novel aerogel composites multiscale reinforced by glass bers with SiC nanowhiskers (SiC nw ) (AFW) was prepared. SiC nw were evenly distributed in glass bers felts by freezing-drying method to form a uniform multiscale felts. The SiC nw inside felts provided more contact point with aerogel to increase the interfacial adhesion force so that compressive stress of AFW with 4% volume fraction SiC nw was increased to 0.29MPa. SiC nw blocked infrared radiation to decrease the heat transfer. Therefore, Even though SiC nw raised thermal conductivity of aerogels at room temperature, thermal conductivity at 500℃ of AFW with was only 0.040 W/(m•K). In another word SiC nw reduced the sensitivity of thermal conductivity to temperature. AFW shows potential in the eld of medium and high temperature insulation.

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Section: Introductionmentioning

confidence: 99%

SiO2 aerogel multiscale reinforced by glass fibers and SiC nanowhiskers for thermal insulation

Yang

Chen

et al. 2023

J Porous Mater

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“…To improve the separation between SiO 2 aerogel and bre, SiO 2 aerogel composite materials were prepared with reinforcing nanobers with small diameter, including cellulose, carbon, polyurethane, polyaniline, and SiO 2 nanobers. [13][14][15][16][17][18][19][20][21] However, the preparation and dispersion of nanobers contribute to the SiO 2 -aerogel-composite synthesis complexity, with most of the drying process still requiring expensive supercritical drying. Moreover, systematic studies on the transmittance of nano-bre reinforced SiO 2 aerogel are absent.…”

Section: Introductionmentioning

confidence: 99%

Microtexture, microstructure evolution, and thermal insulation properties of Si₃N₄/silica aerogel composites at high temperatures

Yang

2022

RSC Adv.

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“…However, SAs have poor mechanical properties, which restrict their application. Therefore, SA-based composites are generally used [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Blown Composite Films of Low-Density/Linear-Low-Density Polyethylene and Silica Aerogel for Transparent Heat Retention Films and Influence of Silica Aerogel on Biaxial Properties

et al. 2022

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Blown films based on low-density polyethylene (LDPE)/linear low-density polyethylene (LLDPE) and silica aerogel (SA; 0, 0.5, 1, and 1.5 wt.%) were obtained at the pilot scale. Good particle dispersion and distribution were achieved without thermo oxidative degradation. The effects of different SA contents (0.5–1.5 wt.%) were studied to prepare transparent-heat-retention LDPE/LLDPE films with improved material properties, while maintaining the optical performance. The optical characteristics of the composite films were analyzed using methods such as ultraviolet–visible spectroscopy and electron microscopy. Their mechanical characteristics were examined along the machine and transverse directions (MD and TD, respectively). The MD film performance was better, and the 0.5% composition exhibited the highest stress at break. The crystallization kinetics of the LDPE/LLDPE blends and their composites containing different SA loadings were investigated using differential scanning calorimetry, which revealed that the crystallinity of LDPE/LLDPE was increased by 0.5 wt.% of well-dispersed SA acting as a nucleating agent and decreased by agglomerated SA (1–1.5 wt.%). The LDPE/LLDPE/SA (0.5–1.5 wt.%) films exhibited improved infrared retention without compromising the visible light transmission, proving the potential of this method for producing next-generation heat retention films. Moreover, these films were biaxially drawn at 13.72 MPa, and the introduction of SA resulted in lower draw ratios in both the MD and TD. Most of the results were explained in terms of changes in the biaxial crystallization caused by the process or the influence of particles on the process after a systematic experimental investigation. The issues were strongly related to the development of blown nanocomposites films as materials for the packaging industry.

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Super-insulated, flexible, and high resilient mullite fiber reinforced silica aerogel composites by interfacial modification with nanoscale mullite whisker

Cited by 49 publications

References 70 publications

SiO2 aerogel multiscale reinforced by glass fibers and SiC nanowhiskers for thermal insulation

SiO2 aerogel multiscale reinforced by glass fibers and SiC nanowhiskers for thermal insulation

Microtexture, microstructure evolution, and thermal insulation properties of Si₃N₄/silica aerogel composites at high temperatures

Blown Composite Films of Low-Density/Linear-Low-Density Polyethylene and Silica Aerogel for Transparent Heat Retention Films and Influence of Silica Aerogel on Biaxial Properties

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Super-insulated, flexible, and high resilient mullite fiber reinforced silica aerogel composites by interfacial modification with nanoscale mullite whisker

Cited by 49 publications

References 70 publications

SiO2 aerogel multiscale reinforced by glass fibers and SiC nanowhiskers for thermal insulation

SiO2 aerogel multiscale reinforced by glass fibers and SiC nanowhiskers for thermal insulation

Microtexture, microstructure evolution, and thermal insulation properties of Si3N4/silica aerogel composites at high temperatures

Blown Composite Films of Low-Density/Linear-Low-Density Polyethylene and Silica Aerogel for Transparent Heat Retention Films and Influence of Silica Aerogel on Biaxial Properties

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Microtexture, microstructure evolution, and thermal insulation properties of Si₃N₄/silica aerogel composites at high temperatures