Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The Synthesis of Silica Aerogel in the Macroporous Ceramic Structure by Sono-gel Process and Supercritical Drying Process

초음파 겔화 공정과 초임계 건조 공정을 이용한 다공성 세라믹스 구조체 내부에 실리카 에어로겔 합성

  • Hong, Sun-Wook (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Song, In-Hyuck (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Park, Young-Jo (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Yun, Hui-Suk (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Hwang, Ki-Young (Agency for Defense Development) ;
  • Rhee, Young-Woo (Department of Chemistry Engineering, Chungnam National University)
  • 홍선욱 (재료연구소 엔지니어링세라믹그룹) ;
  • 송인혁 (재료연구소 엔지니어링세라믹그룹) ;
  • 박영조 (재료연구소 엔지니어링세라믹그룹) ;
  • 윤희숙 (재료연구소 엔지니어링세라믹그룹) ;
  • 황기영 (국방과학연구소) ;
  • 이영우 (충남대학교 화학공학과)
  • Received : 2010.10.10
  • Accepted : 2010.10.29
  • Published : 2010.11.30
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Abstract

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.

Keywords

References

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