Hydrophobic Flexible Silica Aerogels Felts Fabricated by Ambient Pressure Drying

Xiao Yun Wu; Yu Xi Yu; De Qian Guo; Yong Chen

doi:10.4028/www.scientific.net/AMR.709.32

Paper Titles

Synthesis and Characterization of Ferrous Tungstate Nanoparticles
p.15

Chemical Methods for Synthesizing Gold Nanoparticles
p.19

Influence of La Doping on the Apparent Activation Energy of α-Al₂O₃ during the Densification Process at Constant Heating-Rate
p.23

Synthesis and Characterization of Triethanolamine Borate
p.28

Hydrophobic Flexible Silica Aerogels Felts Fabricated by Ambient Pressure Drying
p.32

The Synthesis and Purification of 4-Dimethylamino-N-Methyl -4-Stilbazolium Tosylate
p.36

Optimization of Reaction Conditions for Preparing Carboxymethyl Cellulose Guaze
p.40

Ultrasensitive Determination of Rutin on Ag Nanoparticles- Poly(p-aminobenzene sulfonic acid)/Graphene Modified Glassy Carbon Electrode
p.45

Aromatic Components Analysis of HongDao Clam by HS-SPME and GC-MS
p.49

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 709Hydrophobic Flexible Silica Aerogels Felts...

Hydrophobic Flexible Silica Aerogels Felts Fabricated by Ambient Pressure Drying

Abstract:

Hydrophobic flexible silica aerogels felts were fabricated successfully by two-steps sol-gel process via ambient pressure drying. First of all, the sol with various pH values was obtained from tetraethylorthosilicate (TEOS) as silicon source, hydrochloric acid/aqueous ammonia ethanol solution as catalysts. Then glass fiber felts was incorporated into the sol to increase the mechanical properties of silica aerogel. After the completion of solvent exchange and surface modification by using trimethylchlorosilane (TMCS)/n-hexane solution, the gel felts were dried under ambient pressure. The samples show excellent hydrophobic properties.

You might also be interested in these eBooks

Advances in Applied Science, Engineering and Technology

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 709)

Pages:

32-35

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.709.32

Citation:

Cite this paper

Online since:

June 2013

Authors:

Xiao Yun Wu, Yu Xi Yu, De Qian Guo, Yong Chen

Keywords:

Ambient Pressure Drying, Glass Fiber Felts, Silica Aerogels

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] A. P. Rao, G. M. Pajonk, A. V. Rao, Effect of preparation conditions on the physical and hydrophobic properties of two step processed ambient pressure dried silica aerogels, J. Mater. Sci. 40 (2005) 3481-3489.

DOI: 10.1007/s10853-005-2853-3

Google Scholar

[2] F. Shi, L. J. Wang, J. X. Liu, Effect of heat treatment on silica aerogels prepared via ambient drying, J. Mater. Sci. Technol. 23 (2007) 402-406.

Google Scholar

[3] S. W. Hwang, T. Y. Kim, S. H. Hyun, Effect of surface modification conditions on the synthesis of mesoporous crack-free silica aerogel monoliths from waterglass via ambient-drying, Microporous Mesoporous Mater. 130 (2010) 295-302.

DOI: 10.1016/j.micromeso.2009.11.024

Google Scholar

[4] J. L. Gurav, A. V. Rao, U. K. H. Bangi, Hydrophobic and low density silica aerogels dried at ambient pressure using TEOS precursor, J. Alloys. Compd. 471 (2009) 296-302.

DOI: 10.1016/j.jallcom.2008.03.076

Google Scholar

[5] H. F. Xu, C. H. Zhang, H. J. Zhang, The preparation and structural characterization of ambient-dried porous methylsilicone matrix doped with SiO2 powder, J. Non-cryst. Solids 357 (2011) 2822-2825.

DOI: 10.1016/j.jnoncrysol.2011.03.007

Google Scholar