| 초음파 겔화 공정과 초임계 건조 공정을 이용한 다공성 세라믹스 구조체 내부에 실리카 에어로겔 합성 |
| 홍선욱, 송인혁, 박영조, 윤희숙, 황기영1, 이영우2 |
재료연구소 엔지니어링세라믹그룹
1국방과학연구소
2충남대학교 화학공학과 |
| The Synthesis of Silica Aerogel in the Macroporous Ceramic Structure by Sono-gel Process and Supercritical Drying Process |
| Sun-Wook Hong, In-Hyuck Song, Young-Jo Park, Hui-Suk Yun, Ki-Young Hwang1, Young-Woo Rhee2 |
Engineering Ceramics Research Group, Korea Institute of Materials Science
1Agency for Defense Development
2Department of Chemistry Engineering, Chungnam National University |
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| ABSTRACT |
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The synthesis behavior of nanoporous silica aerogel in the macroporous ceramic structure was observed using TEOS as a source material and glycerol as a DCCA(dry control chemical additive). Silica aerogel in the macroporous ceramic structure were synthesized through a sono-gel process. The wet gel in the macroporous ceramic structure were aged in ethanol for 72 h at $50^{circ}C$. The aged wet gel was dried under supercritical drying condition. The addition of glycerol has a role of giving the uniform pore size distribution. The reproducibility of aerogel in the macroporous ceramic was improved in the glycerol(0.05 mol%) added to the silica sol and TEOS : $H_2O$=1 : 12. |
| Key words:
TEOS, Macroporous ceramic, Aerogel, Glycerol, Sono-gel |
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