Advances in multiple reinforcement strategies and applications for silica aerogel

Xue, Jieyu; Han, Ruonan; Li, Yanming; Zhang, Jianxun; Liu, Jinxin; Yang, Yong

doi:10.1007/s10853-023-08945-y

Cited by 29 publications

(11 citation statements)

References 145 publications

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“…As indicated by the blue arrows in Figure 9, the increase in the number of fibers strengthens the reflection of sound waves from fiber to fiber and from fiber to honeycomb wall, which improves sound wave travel paths and consumption. In addition to this, the consumption of sound wave energy is primarily caused by fibers' own vibrations, heat transfer and visco‐thermal dissipation (red arrows) 34–38 . The sound waves induce fiber vibrations in which part of sound energy is converted into mechanical energy.…”

Section: Resultsmentioning

confidence: 99%

Preparation and sound insulation of honeycomb composite structures filled with glass fiber

Ge,

Xue,

Liu

et al. 2023

Polymer Composites

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Honeycomb composite with excellent mechanical–physical properties had attracted extensive attention. To achieve outstanding sound insulation while maximizing the high‐performance of honeycomb composite, this article reported a honeycomb composite structure filled with glass fiber (HFG) based on a paper‐making process and the corresponding sandwich structure. Pulping parameters, mechanical property, air permeability and sound insulation of HFG were analyzed. The results showed that the hanging index and settling height of glass fiber slurry were inversely proportional to the beating degree, which was beneficial for reducing the coefficient of variation (CV) of HFG with value of 4%–6%. The maximum improvement in tensile strength and bursting strength of HFG were 70% and 53%, respectively. In addition, sound transmission loss (STL) of HFG was proportional to cell size, density, filling amount and thickness of the honeycomb. Compared to HFG, sandwich structure consisting of HFG and glass fiber/hot melt fiber panels effectively improved STL, especially at low‐mid frequencies. It was also found that designing holes on the surface of sandwich structure could further improve STL in certain frequency bands. The structure offered a lightweight and high‐performance response for construction, transportation and infrastructure.Highlights This article designs a new type of honeycomb filled glass fiber via paper‐making process, aiming to improve the comprehensive performance of honeycomb. By the design of embedded structure, the maximum improvement in tensile strength and bursting strength of honeycomb were 70% and 53%, respectively. By designing perforated, embedded and laminated structures, sound insulation has been improved, while reducing material quality.

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Section: Resultsmentioning

confidence: 99%

Preparation and sound insulation of honeycomb composite structures filled with glass fiber

Ge,

Xue,

Liu

et al. 2023

Polymer Composites

Self Cite

View full text Add to dashboard Cite

show abstract

“…The inorganic and organic phase interface is chained by powerless interaction forces, namely van der Waals, electrostatic gravitational, hydrogen bonds, or covalent bonds that are strong. The increased mechanical qualities of silica aerogel result from the superior mechanical properties exhibited by long carbon chains in polymers [ 77 ].…”

Section: Preparation Methodsmentioning

confidence: 99%

“…Following the reaction of sol-gel, the functional group facilitates polymerization by means of polymer chains connecting particles via weak silanol bonds. The utilization of this approach guarantees a uniform distribution of the polymer all through the aerogel skeleton [ 77 , 78 ].…”

Section: Preparation Methodsmentioning

confidence: 99%

“…Solid deposits are formed when chemical reactions occur at the interface of the gaseous or vapor polymer in the reactor and the gas-phase or gas–solid medium. These reactions are predominantly fueled by various energy sources, including light radiation, heating, and plasma [ 77 , 79 ].…”

Section: Preparation Methodsmentioning

confidence: 99%

“…Inorganic reinforcement provided aerogel composites with superior thermal stability, chemical resistance, and possibly catalytic activity. Preparation methods for inorganic reinforced aerogels include sol-gel, impregnation, and CVD [ 77 ].…”

Section: Preparation Methodsmentioning

confidence: 99%

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An Updated Overview of Silica Aerogel-Based Nanomaterials

Niculescu,

Tudorache,

Bocioagă

et al. 2024

Nanomaterials

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Silica aerogels have gained much interest due to their unique properties, such as being the lightest solid material, having small pore sizes, high porosity, and ultralow thermal conductivity. Also, the advancements in synthesis methods have enabled the creation of silica aerogel-based composites in combination with different materials, for example, polymers, metals, and carbon-based structures. These new silica-based materials combine the properties of silica with the other materials to create a new and reinforced architecture with significantly valuable uses in different fields. Therefore, the importance of silica aerogels has been emphasized by presenting their properties, synthesis process, composites, and numerous applications, offering an updated background for further research in this interdisciplinary domain.

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Nacre‐Mimetic Multi‐Mechanical Synergistic Ceramic Aerogels with Interfacial Bridging and Stress Delocalization

Zhang,

Huang,

et al. 2024

Adv Funct Materials

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Elastic ceramic aerogels are exceptionally suitable for thermal insulating applications, but lacking multi‐mechanical synergistic high strength remains a deficiency. Inspired by the robust protective shells of mollusks in nature, which feature distinct hierarchical ordered structures, exhibiting strong and tough mechanical properties, a system construction and structural governing strategy is proposed to allow the nanostructure to assemble strong and flexible ceramic aerogels. Through the design of a hierarchical multi‐arched structure configurated binary‐soldering‐assemble interfacial topology interlocking, concentrated stress is effectively discrete. This biomimetic strategy enables the effective dissipation of mechanical energy, resulting in ceramic aerogels with exemplary compressive resilience, bendability, tensile resistance, and their strength exceeding that of other nanofibrous aerogels by up to tenfold. Additionally, the flexible aerogels also show remarkable thermal resistance from −196 to 1100 °C and superior thermal insulation capabilities (39.72 mW m−1 K−1), making them more suitable for the applications.

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Advances in multiple reinforcement strategies and applications for silica aerogel

Cited by 29 publications

References 145 publications

Preparation and sound insulation of honeycomb composite structures filled with glass fiber

Preparation and sound insulation of honeycomb composite structures filled with glass fiber

An Updated Overview of Silica Aerogel-Based Nanomaterials

Nacre‐Mimetic Multi‐Mechanical Synergistic Ceramic Aerogels with Interfacial Bridging and Stress Delocalization

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