Loads transfer across static electrical phase interfaces in silica aerogel/polymethyl methacrylate composites

Li, Hongyan; Song, Longfei; Fu, Yu Can; Yin, Wei; Li, Ruyi; Liu, Hongli

doi:10.1016/j.compscitech.2016.12.004

Cited by 25 publications

(7 citation statements)

References 34 publications

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“…Hence, electrostatic interactions between the silica phase and polymer phase exhibit high interfacial thermal resistances, and the heat flux could be held in the silica phase. This has been reported in previous work by us [28].…”

Section: Introductionsupporting

confidence: 89%

“… Heat flux in SA/polymer composites with different phase interfaces [28] a Covalent bond phase interface b Electrostatic interaction phase interface…”

Section: Introductionmentioning

confidence: 99%

“…Heat flux in SA/polymer composites with different phase interfaces[28] a Covalent bond phase interface b Electrostatic interaction phase interface are associated with stretching vibration of Si-O-Si. The broad peak in the range of around 1650 cm −1 is due to the absorbed water molecules.…”

mentioning

confidence: 99%

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Electrostatic‐driven self‐assembled silica aerogel/tethacryloxyethyltrimethyl ammonium chloride/PMMA ternary nanocomposite with thermal insulation phase interfaces

Song

et al. 2019

Micro & Nano Letters

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A three-dimensional (3D) porous silica aerogel (SA)/tethacryloxyethyltrimethyl ammonium chloride (MTC)/polymethylmethacrylate (PMMA) (SMP) ternary nanocomposite was fabricated through electrostatic-driven self-assembly by in situ polymerisation. The as-prepared products were characterised by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, Zeta potential (ZETA), multi-assay gel permeation chromatography, the synchronous thermal analyser (TG), differential scanning calorimetry and so on. The results show that the ternary hybrid aerogels have an interconnected 3D nanoporous structure with a diameter of about 20-40 nm. Furthermore, positively charged MTC was successfully absorbed on the negatively charged SiO 2 aerogels surface to form high-thermal insulation phase interfaces. The SMP hybrid aerogels revealed a favourable mechanical property and an excellent thermal insulation property. Overall, the present study introduces the static electrical phase interfaces that are physical interactions between the silica phase and the polymer phase to distinctly improve the thermal insulation property of SiO 2-based aerogels, which could become a promising insulating material for broadening applications.

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Section: Introductionsupporting

confidence: 89%

“… Heat flux in SA/polymer composites with different phase interfaces [28] a Covalent bond phase interface b Electrostatic interaction phase interface…”

Section: Introductionmentioning

confidence: 99%

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Electrostatic‐driven self‐assembled silica aerogel/tethacryloxyethyltrimethyl ammonium chloride/PMMA ternary nanocomposite with thermal insulation phase interfaces

Song

et al. 2019

Micro & Nano Letters

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“…8 b . The band at 1248 cm −1 is attributed to the interaction of GOo and HNTs in HGO, while it is 1245.8 cm −1 in the Raman spectrum of HGO with 5% tensile strain [29]. The results show that the D‐band of HGO moves 2.3 cm −1 towards the high field after stretching.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 9 shows a Raman mapping of HGO under tension, bending, and compression strains [29]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation and loads transfer behaviour of graphene/halloysite organic–inorganic hybrid aerogel

Jiao

Dou

et al. 2020

Micro & Nano Letters

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Aerogel materials have wide research and application in the fields of thermal insulation and functional materials. Although graphene sheet has high strength in conventional graphene aerogels, the interaction between sheets is weak. The overall strength of graphene aerogels is not high enough. Aerogels, especially halloysite aerogels, have been successfully synthesised in recent years, but their electrical potential expansion is slightly insufficient. Therefore, in view of the enhancement of the mechanical properties of aerogels and the development of electrical potential, the idea of organic-inorganic hybrid (OIH) aerogel was proposed. Graphene halloysite OIH aerogel materials were prepared by graphene sheets and halloysite fibres. The preparation and microstructure of materials were characterised using Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and nitrogen adsorption-desorption. Meanwhile, the mechanical properties of aerogels were also studied, and the stress transfer behaviour of aerogels was investigated by Raman spectroscopy. The results showed that the OIH aerogel was successfully obtained. The strength of the OIH aerogels was much higher than that of the mixture of graphene and halloysite aerogel. The OIH network aerogels had more effective stress transfer effect depending on the chemical bonds between the networks.

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A review of recent progress on the silica aerogel monoliths: synthesis, reinforcement, and applications

Lin

Liu

et al. 2021

J Mater Sci

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Loads transfer across static electrical phase interfaces in silica aerogel/polymethyl methacrylate composites

Cited by 25 publications

References 34 publications

Electrostatic‐driven self‐assembled silica aerogel/tethacryloxyethyltrimethyl ammonium chloride/PMMA ternary nanocomposite with thermal insulation phase interfaces

Electrostatic‐driven self‐assembled silica aerogel/tethacryloxyethyltrimethyl ammonium chloride/PMMA ternary nanocomposite with thermal insulation phase interfaces

Preparation and loads transfer behaviour of graphene/halloysite organic–inorganic hybrid aerogel

A review of recent progress on the silica aerogel monoliths: synthesis, reinforcement, and applications

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