Studies on the Preparation and Thermal Stability of SiO2 Aerogels Doped with Fibrous Bructite and TiO2 Opacifier

Weina Zhang; Jilong Lu; Jianwei Zhu; Wenbo Cui

doi:10.14233/ajchem.2013.13030

Issue

Vol. 25 No. 2 (2013): Vol 25 Issue 2

Issue Published : September 6, 2012

This work is licensed under a Creative Commons Attribution 4.0 International License.

Studies on the Preparation and Thermal Stability of SiO2 Aerogels Doped with Fibrous Bructite and TiO2 Opacifier

https://doi.org/10.14233/ajchem.2013.13030

Weina Zhang

College of Geo-exploration Science and Technology, Jilin University, Changchun, P.R. China ; College of Chemistry, Jilin Normal University, Siping, P.R. China

Jilong Lu

College of Geo-exploration Science and Technology, Jilin University, Changchun, P.R. China

Jianwei Zhu

College of Earth Sciences, Jilin University, Changchun, P.R. China

Wenbo Cui

Jilin Province Design and Research Institute for Petrochemical Engineering, Changchun, P.R. China

Corresponding Author(s) : Jianwei Zhu

zjw1095@sina.com; nana820616@yahoo.com.cn

Asian Journal of Chemistry, Vol. 25 No. 2 (2013): Vol 25 Issue 2
Article Published : September 8, 2012

Abstract

The reinforced silica aerogel and composite silica aerogel doped with fibrous bructite and titanium dioxide opacifier had been prepared by sol-gel method and supercritical drying technique, using tetraethoxysilane as precursor. The thermal stability and micromorphology of the reinforced silica aerogel and composite silica aerogel had been studied by the differential thermal analysis, thermogravimetric analysis and scanning electron microscopy and these properties had been compared with pure silica aerogel. The results showed that the weight loss of silica aerogels increased a little and the thermal stability decreased slightly after fiber and TiO₂ power were doped. But the porous netted structure of obtained reinforced and composite silica aerogels were very even and ordered, which will be enough to satisfy the demands of the super heat insulation and heat preservation of materials in the fields of avigation, spaceflight, civilian technology and industry.

Keywords

Silica aerogels Fibrous bructite Composite silica aerogels Thermal stability

Zhang, W., Lu, J., Zhu, J., & Cui, W. (2012). Studies on the Preparation and Thermal Stability of SiO2 Aerogels Doped with Fibrous Bructite and TiO2 Opacifier. Asian Journal of Chemistry, 25(2), 877–879. https://doi.org/10.14233/ajchem.2013.13030

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References

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References

S.S. Kistler, Nature, 127, 741 (1931).

R.W. Pekala, US Patent 4873218 (1989).

R.W. Pekala, US Patent 5476878 (1995).

M. Moner, A. Girona and E. Roig, Appl. Phys. Lett., 75, 653 (1999).

A.C. Pierre and G.M. Pajonk, Chem. Rev., 102, 4243 (2002).

G.M. Pajonk, Colloid. Polym. Sci., 281, 637 (2003).

M. Schmidt and F. Schwertfeger, J. Non-Crystall. Solids, 225, 364 (1998).

L.W. Hrubesh, J. Non-Crystall. Solids, 225, 335 (1998).

G.M. Pajonk, Appl. Catal., 72, 217 (1991).

S.T. Mayer, R.W. Pekala and J.L. Kaschmitter, J. Electrochem. Soc., 140, 446 (1993).

X.X. Gao, W.N. Zhang, M. Ren and G.Y. Zhu, J. Changehun Univ. Sci. Technol., 30, 86 (2007).

J. Wang, J. Shen and F. Jochen, Chin. J. Mater. Res., 9, 568 (1995).

F. Wang, Z.J. Hu, X.H. Chen and H.H. Song, Aerospace Mater. Technol., 39, 35 (2009).

Y.F. Wang, C.R. Zhang, J. Feng and Y.G. Jiang, J. Chin. Ceram. Soc., 37, 234 (2009).

X.G. Yang, Y.T. Sun and D.Q. Shi, Mater. Sci. Eng. A, 528, 4830 (2011).

S.P. Liu, J.Z. Yuan, J.Y. Tang and M. Zhang, Exp. Inform. Min. Ind., 23, 14 (2007).

J. Kuhn, T. Gleissner and M.C. Arduini-Schuster, J. Non-Crystall. Solids, 186, 291(1995).

Y.H. Li, W.J. Zhang, W.N. Zhang, X.Y. Yang, M. Ren and G.Y. Zhu, Mater. Sci. Technol., 15, 358 (2007).

W.N. Zhang, Y.H. Li, Q.W. Wang, M. Ren and G.Y. Zhu, J. Jilin Normal Univ. (Nat. Sci. Ed.), 30, 67 (2009).

H.K. Hu, L.H. Gan, G.M. Li, H.X. Sha and L.W. Chen, Lab. Res. Explor., 19, 33 (2000).

Issue

Vol. 25 No. 2 (2013): Vol 25 Issue 2

Studies on the Preparation and Thermal Stability of SiO2 Aerogels Doped with Fibrous Bructite and TiO2 Opacifier

Corresponding Author(s) : Jianwei Zhu

Abstract

Keywords

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