Browse > Article
http://dx.doi.org/10.4191/KCERS.2008.45.1.054

Expansion Characteristics of the Hydrated Sodium Silicate  

Kong, Yang-Pyo (Department of Materials Science and Engineering, Chungnam National University)
Cho, Ho-Yeon (Department of Materials Science and Engineering, Chungnam National University)
Suhr, Dong-Soo (Department of Materials Science and Engineering, Chungnam National University)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.1, 2008 , pp. 54-59 More about this Journal
Abstract
Hydrated sodium silicate with 25 wt% water contents was synthesized by hydrothermal reaction using anhydrous sodium silicate. The hydrated sodium silicate was expanded at $370^{\circ}C$ for 30 min. and then pulverized, classified (- 200 mesh) and press-formed. The samples were heat treated at $400{\sim}900^{\circ}C$ for 30 min. in order to study the expansion characteristics depending on heat treatment temperature. A porous body with closed pore was formed above $600^{\circ}C$. The volume expansion ratio and the pore size were increased and the specific gravity was decreased with increasing heat treatment temperature. However, the volume expansion ratio was decreased and the specific gravity was increased above $850^{\circ}C$ due to the softening of the sodium silicate.
Keywords
Anhydrous sodium silicate; Hydrated sodium silicate; Hydrothermal reaction; Porous ceramics; Closed pore;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By SCOPUS : 2
연도 인용수 순위
1 G. Y. Jang, S. R. Kim, K. H. Lee, and J. H. Jung, "Manufacturing Method of Porous Ceramics(in Kor)," J. Kor. Ceram. Soc. Bull., 10 [2] 193-202 (1995)
2 S. M. Han, D.Y. Shin, and S. K. Kang, "Preparation for Porous Ceramics Using Low Grade Clay(in Kor)," J. Kor. Ceram. Soc., 35 [6] 575-82 (1998)   과학기술학회마을
3 J. K. Park and J. D. Lee, "Preparation of Porous Inorganic Materials by Foaming Slurry(in Kor)," J. Kor. Ceram. Soc., 35 [12] 1280-88 (1998)   과학기술학회마을
4 K. J. Bae, K. H. Kim, and D. J. Seo, "Fabrication & Application of Ultra-Porous Aerogel(in Kor)," Korea Institute of Science and Technology Information, 3-15 (2005)
5 Y. P. Kong, S. H. Seo, J. H. Kim, and D. S. Suhr, "Characteristics of Porous Ceramics Depending on Water Content of the Water Glass and Heat Treatment Temperature(in Kor)," J. Kor. Ceram. Soc., 42 [10] 691-97 (2005)   과학기술학회마을   DOI   ScienceOn
6 S. H. Ahn, S. Y. Kim, K. P. Yoo, and K. H. Lee, "Manufacturing Porous Transparency Aerogel Using Water Glass(in Kor)," Theories and Applications of Chemical Engineering, 1 [2] 1285-88 (1995)
7 T. Fujiu, "Processing and Properties of Cellular Silica Synthesized by Foaming Sol-Gels," J. Am. Ceram. Soc., 73 [1] 85-92 (1990)   DOI
8 J. S. Woyansky and C. E. Scott, "Processing of Porous Ceramics," J. Am. Ceram. Soc. Bull., 71 [11] 1674-80 (1992)
9 H. N. Choi and S. H. Han, "Effects of Fabrication Variables and Microstructures on the Compressive Strength of Open Cell(in Kor)," J. Kor. Ceram. Soc., 36 [9] 954-61 (1999)   과학기술학회마을
10 S. H. Ahn, S. Y. Kim, K. H. Lee, S. Y. Bae, and K. P. Yoo, "Manufacturing Ultraporous Transparent Aerogel from Water Glass by Sol-Gel Processing and Supercritical Drying( in Kor)," HWAHAK KONGHAK, 35 [4] 552-56 (1997)