Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite

Dengteng Ge; Lili Yang; Yao Li; Jiu Peng Zhao

doi:10.1016/j.jnoncrysol.2009.09.017

Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite

Dengteng Ge
, Lili Yang
, Yao Li^*
, Jiu Peng Zhao

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
School of Chemistry and Chemical Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

133 Scopus citations

Abstract

Silica aerogel/epoxy composite was prepared by dry mixing hydrophobic aerogels with epoxy powders and heat pressing method. The composite materials show a serviceability temperature up to 250 °C with low thermal conductivity (0.11-0.044 W/m k) and hydrophobic property (water contact angle of 117-140°). Transmission electron microscope photos proved that part of silica aerogels nanopores had been immersed by epoxy. Based on this phenomenon, an immersion model was build up to study the effect of immersion on the thermal insulation and hydrophobic properties. In addition a thermal conductivity prediction equation of aerogel/polymer system was obtained and confirmed by comparing the experimental data.

Original language	English
Pages (from-to)	2610-2615
Number of pages	6
Journal	Journal of Non-Crystalline Solids
Volume	355
Issue number	52-54
DOIs	https://doi.org/10.1016/j.jnoncrysol.2009.09.017
State	Published - 15 Dec 2009

Keywords

Aerogels
Thermal conductivity

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10.1016/j.jnoncrysol.2009.09.017

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title = "Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite",

abstract = "Silica aerogel/epoxy composite was prepared by dry mixing hydrophobic aerogels with epoxy powders and heat pressing method. The composite materials show a serviceability temperature up to 250 °C with low thermal conductivity (0.11-0.044 W/m k) and hydrophobic property (water contact angle of 117-140°). Transmission electron microscope photos proved that part of silica aerogels nanopores had been immersed by epoxy. Based on this phenomenon, an immersion model was build up to study the effect of immersion on the thermal insulation and hydrophobic properties. In addition a thermal conductivity prediction equation of aerogel/polymer system was obtained and confirmed by comparing the experimental data.",

keywords = "Aerogels, Thermal conductivity",

author = "Dengteng Ge and Lili Yang and Yao Li and Zhao, \{Jiu Peng\}",

year = "2009",

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doi = "10.1016/j.jnoncrysol.2009.09.017",

language = "英语",

volume = "355",

pages = "2610--2615",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite

AU - Ge, Dengteng

AU - Yang, Lili

AU - Li, Yao

AU - Zhao, Jiu Peng

PY - 2009/12/15

Y1 - 2009/12/15

N2 - Silica aerogel/epoxy composite was prepared by dry mixing hydrophobic aerogels with epoxy powders and heat pressing method. The composite materials show a serviceability temperature up to 250 °C with low thermal conductivity (0.11-0.044 W/m k) and hydrophobic property (water contact angle of 117-140°). Transmission electron microscope photos proved that part of silica aerogels nanopores had been immersed by epoxy. Based on this phenomenon, an immersion model was build up to study the effect of immersion on the thermal insulation and hydrophobic properties. In addition a thermal conductivity prediction equation of aerogel/polymer system was obtained and confirmed by comparing the experimental data.

AB - Silica aerogel/epoxy composite was prepared by dry mixing hydrophobic aerogels with epoxy powders and heat pressing method. The composite materials show a serviceability temperature up to 250 °C with low thermal conductivity (0.11-0.044 W/m k) and hydrophobic property (water contact angle of 117-140°). Transmission electron microscope photos proved that part of silica aerogels nanopores had been immersed by epoxy. Based on this phenomenon, an immersion model was build up to study the effect of immersion on the thermal insulation and hydrophobic properties. In addition a thermal conductivity prediction equation of aerogel/polymer system was obtained and confirmed by comparing the experimental data.

KW - Aerogels

KW - Thermal conductivity

UR - https://www.scopus.com/pages/publications/71849098286

U2 - 10.1016/j.jnoncrysol.2009.09.017

DO - 10.1016/j.jnoncrysol.2009.09.017

M3 - 文章

AN - SCOPUS:71849098286

SN - 0022-3093

VL - 355

SP - 2610

EP - 2615

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 52-54

ER -

Hydrophobic and thermal insulation properties of silica aerogel/epoxy composite

Abstract

Keywords

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