Preparation of Aerogel-Modified Expanded Perlite and its Application in Heat Insulation Coating

Abstract:

Building insulation is an important part of building energy conservation. The heat insulation coating preapred from modified expanded perlite has been a potential building thermal insulation material. In this paper, aerogel was filled into the pores of expanded perlite by vacuum impregnation method to produce aerogel-modified expanded perlite at ambient pressure. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption–desorption techniques. The results revealed that aerogel could be well filled into the pores of expanded perlite, and the resultant aerogel-modified expanded perlite possessed nanoporous structure with higher specific surface area of 196 m2·g-1, and low thermal conductivity of 0.063 W·m-1·K-1 less than that of expanded perlite by 13.3%. Heat insulation coatings prepared from aerogel-modified expanded perlite had good thermal insulation effect, indicating that the product showed potential aplication in the field of building energy conservation.

• Periodical: Advanced Materials Research (Volume 668)
• Pages: 360-364
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.668.360
• Online since: March 2013
• Authors: Kang Peng, Hua Ming Yang
• Keywords: Aerogel, Building Energy Conservation, Expanded Perlite, Heat Insulation Coatings, Nanoporous

References

[1] H. Xie, Z. Yu and J. Wu: Procedia Engineering Vol. 21 (2011), p.1145.

[2] R. Dylewski and J. Adamczyk: Build. Environ. Vol. 46 (2011), P. 2615.

[3] Z. Wang, Z. Bai , H. Yu, J. Zhang, and T. Zhu: Energ. Buildings Vol. 36 (2004) P. 1299.

[4] W. Guo, X. Qiao , Y. Huang, M. Fang and X. Han: Energ. Buildings Vol. 50 (2012) P. 196.

[5] L. Wang, Y. Wang, X.G. Sun, J.Q. He, Z.Y. Pan, Y. Zhou and P.L. Wu: Mater. Des. Vol. 32(2011) P. 36.

[6] C. Jiao, B. Ji and D. Fang: Mater. Lett. Vol. 67(2012) P. 352.

[7] A. Soleimani Dorcheh and M.H. Abbasi: J. Mater. Process. Technol. Vol. 199(2008) P. 10.

[8] A.S. Dias, M. Pillinger and A.A. Valente： Micropor. Mesopor. Mater Vol. 94 (2006) P. 214.

[9] M. Schmidt and F. Schwertfeger: J. Non-Cryst. Solids Vol. 225(1998) P. 364.

[10] R. Baetens, B. Jelle and A. Gustavsen: Energ. Buildings Vol. 43(2011) P. 761.

[11] A.C. Pierre, E. Elaloui and G.M. Pajonk: Langmuir Vol. 14 (1998) P. 66.

[12] W.C. Li, A.H. Lu and S.C. Guo: J. Colloid Interface Sci Vol. 254(2002)P. 153.

[13] E. Hümmer, X. Lu, Th. Rettelbach and J. Fricke: J. Non-Cryst. Solids Vol. 145 (1992) P. 211.