Preparation and characterization of C/SiO 2 /SiC aerogels based on novolac/silica hybrid hyperporous materials

Seraji, Mohamad Mehdi; Ghafoorian, Nafiseh Sadat; Bahramian, Ahmad Reza; Alahbakhsh, Ahmad

doi:10.1016/j.jnoncrysol.2015.06.011

Cited by 30 publications

(10 citation statements)

References 33 publications

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“…Figure A,B show the FT‐IR spectra of the nanofibers before and after calcination at 800°C respectively. As shown in Figure A, the bands at 2960 and 2875 cm −1 were attributed to the C‐H bonds, and the band located at 1658 cm −1 could be ascribed to the C = O vibration bond . These C‐H and C = O bonds mainly attributed to the group possessed in PVB.…”

Section: Resultsmentioning

confidence: 90%

Nanofibers reinforced silica aerogel composites having flexibility and ultra‐low thermal conductivity

Zhang

Zhao

et al. 2020

Int J Applied Ceramic Tech

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For the sake of enhancing the performance of flexible silica aerogel in practical applications, flexible SiO2/SnO2 nanofibers (SSNF) reinforced flexible silica aerogel composites (abbreviated as SiO2‐SSNF) were successfully prepared. Firstly, the SiO2/SnO2 nanofibers with fine diameter (~320 nm) and excellent flexibility were prepared by electrospinning technology. Then the aerogel composites were synthesized by adding the flexible SSNF to the silica solution and through the sol‐gel method and ethanol supercritical drying technology. The effects of different content of the nanofibers on thermal conductivity and Yong's modulus of SiO2‐SSNF aerogel composites were investigated. The SiO2/SnO2 nanofibers were randomly dispersed in the flexible silica aerogel and the great integrity of the material result in smaller linear shrinkage, better thermal protection, and mechanical properties compared with those pure SiO2 aerogels. The final SiO2‐SSNF aerogel composites possess excellent thermal conductivity (0.025‐0.029 W/(m∙K)) and higher Yong's modulus (70 kPa), which was twice than that of the pure silica aerogel. This prepared SiO2‐SSNF aerogel composites can be better used in thermal insulation due to its excellent flexible and thermal insulation property.

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Section: Resultsmentioning

confidence: 90%

Nanofibers reinforced silica aerogel composites having flexibility and ultra‐low thermal conductivity

Zhang

Zhao

et al. 2020

Int J Applied Ceramic Tech

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“…4 indicate that, with increasing flow rate from 0.2 l/min to 0.5 and 0.8 l/min, the breakthrough time of the benzene onto composite aerogel diminished from 13 h to 7 and 3 h, respectively. The decrease of breakthrough time with the increase of flow rate can be attributed to low expose time between benzene molecules with active sites on the surface of the composite aerogel [24]. Additionally, shorter breakthrough time can be due to transporting more mass of benzene inside the bed.…”

Section: Methods Detailsmentioning

confidence: 99%

Preparation of Carbon-Alumina (C/Al2O3) aerogel nanocomposite for benzene adsorption from flow gas in fixed bed reactor

et al. 2019

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“…SiO 2 来提高碳系气凝胶的抗氧化性 [59] . Kong等 [ 、石墨烯气凝胶 [64] 、碳氮化物气凝胶 [65] 等新型碳系气凝胶逐渐出现, 这些气凝胶本身都具有良好的综合性能, 可以直接应用于电子电器、航空航天和吸附剂等领域 [66] .…”

Section: 果胶气凝胶果胶是自然界中存在的一种常见的可生物降解的unclassified

Research of aerogel in flame retardant field

Chen

2018

Sci. Sin.-Chim

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Transparent and flame retardant cellulose/aluminum hydroxide nanocomposite aerogels SCIENCE CHINA Chemistry 59, 1335 (2016); Mass transfer of an organophosphate flame retardant between product source and dust in direct contact Emerging Contaminants 3, 115 (2017); Prevalence of historical and replacement brominated flame retardant chemicals in New York City homes Emerging Contaminants 3, 32 (2017);

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Preparation and characterization of C/SiO 2 /SiC aerogels based on novolac/silica hybrid hyperporous materials

Cited by 30 publications

References 33 publications

Nanofibers reinforced silica aerogel composites having flexibility and ultra‐low thermal conductivity

Nanofibers reinforced silica aerogel composites having flexibility and ultra‐low thermal conductivity

Preparation of Carbon-Alumina (C/Al2O3) aerogel nanocomposite for benzene adsorption from flow gas in fixed bed reactor

Research of aerogel in flame retardant field

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