Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite

Ge, Dengteng; Yang, Lili; Li, Yao; Zhao, Jiupeng

doi:10.1016/j.jnoncrysol.2009.09.017

Cited by 108 publications

(74 citation statements)

References 17 publications

(18 reference statements)

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“…[4][5][6] However, aerogels are very fragile and brittle so they can be easily destructed when they undergo external force or mechanical stress. 1,7) Their low mechanical strength is a big problem in terms of wide application of aerogels.…”

Section: )mentioning

confidence: 99%

Characterization of Mechanical Property Change in Polymer Aerogels Depending on the Ligand Structure of Acrylate Monomer

Lee¹,

Jung²,

Mahadik³

et al. 2016

Journal of the Microelectronics and Packaging Society

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Abstract:In an effort to overcome the weakness of aerogel, polymer aerogels have been prepared by copolymerizing the different types of monomers through sol-gel process. Polymerizing the successive phase of a high internal phase emulsion, which has interconnected porous structure, porous polymer aerogel can be manufactured. In this paper, we use the styrene/divinylbenzene chain as a basic monomer structure, and additionally use 2-ethylhexyl methacrylate (2-EHMA) or 2-ethylhexyl acrylate (2-EHA) as monomers for distinguishing the visible mechanical properties of synthesized polymer aerogel. We can observe the different tendency of polymer aerogels by kinds of monomer or ratio. Flexibility and microstructure can be changed by the types of monomer. EHA polymer aerogel shows high flexibility and thin microstructure, and EHMA polymer aerogel shows high hardness and thick microstructure. EHA/EHMA polymer aerogel shows the intermediate nature between them. By utilizing the mechanical properties of three types of polymer aerogels to adequate situation or environment, polymer aerogels could be used as drug agent, ion exchange resin, oil filter and insulator, and so on.

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Section: )mentioning

confidence: 99%

Characterization of Mechanical Property Change in Polymer Aerogels Depending on the Ligand Structure of Acrylate Monomer

Lee¹,

Jung²,

Mahadik³

et al. 2016

Journal of the Microelectronics and Packaging Society

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show abstract

“…The thermal conductivity of an aerogel is very low, but according to e.g. Achar and Procopio [1] and Ge et al [5], polymer (binder) intrusion into the open cell pore structure may take place during coating formulation and application and displace some of the air. Likewise, Pidhurney and Pescatore [2] claim that high shear forces during mixing and spraying of a coating may break hollow glass spheres.…”

Section: Thermal Insulation Coatingmentioning

confidence: 99%

“…There are other structure models available for estimation of the thermal conductivity of a two-component composite material (see e.g. [5]), but several of them contain adjustable parameters and considered less fundamental than the structure model provided in the heavily cited article by Hamilton and Crosser. Eq.…”

Section: Thermal Conductivity Of Heterogeneous Two-component Systemsmentioning

confidence: 99%

“…20 mW/(m K) (density unknown) [14] 40 mW/(m K)(density is 40 kg/m 3 ) [5] 33.5 and 45 mW/(m K) (density unknown) [19] that the silica aerogel-epoxy composite was made up of three parts: pure epoxy, pure aerogel, and aerogel intruded by epoxy. The core of the particle is assumed to be identical in structure to a "dry" aerogel particle and therefore with a thermal conductivity equal to that of the aerogel used.…”

Section: Thermal Conductivity Of Partly Binder-intruded Aerogel Particlementioning

confidence: 99%

“…Hollow glass, polymer, and ceramic spheres are well-known functional fillers, but also surface-treated silica aerogels are commercially available. The average particle size (in dispersed form) is typically measured in microns for hollow spheres and microns to millimetres for silica aerogel particles [4,5].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantitative analysis of silica aerogel-based thermal insulation coatings

Kiil

2015

Progress in Organic Coatings

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Polymer‐Based Nano‐Composites for Thermal Insulation

Fraleoni‐Morgera

Chhikara

2019

Adv Eng Mater

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The growing need for efficient energy use prompts for effective thermally insulating materials. Nano‐composites represent an important class of materials able to fulfill these needs, enabling both sizeable energy savings and specific applications where thermal insulation has to be coupled to mechanical robustness and lightness, like in automotive and aerospace applications. In view of these developments, this review summarizes the topic of polymer‐based nano‐composites for thermal insulation. The theme is introduced overviewing the features of the matrix‐filler interfaces and of the available models of thermal conductivity, with a mention of the most used types of polymeric matrices. The main three different types of polymer‐based nano‐composites for thermal insulation, that is, polymeric nano‐foams, syntactic foams and all‐solid nano‐composites, are then reviewed. For each class of material, the thermal insulation performance of selected examples is highlighted, with explicit reference to the material's structure and constitutional peculiarities (like type or size of the filler, specific filler surface functionalizations, etc). A resuming table reporting the thermal insulation performance of selected composites is also included in the review. Finally, an outlook on the possible developments in the field is given.

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Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite

Cited by 108 publications

References 17 publications

Characterization of Mechanical Property Change in Polymer Aerogels Depending on the Ligand Structure of Acrylate Monomer

Characterization of Mechanical Property Change in Polymer Aerogels Depending on the Ligand Structure of Acrylate Monomer

Quantitative analysis of silica aerogel-based thermal insulation coatings

Polymer‐Based Nano‐Composites for Thermal Insulation

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