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J. Korean Ceram. Soc. > Volume 39(11); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(11): 1042.
doi: https://doi.org/10.4191/kcers.2002.39.11.1042
세라믹섬유지의 제조 및 슬러리 분산특성
유윤종, 김준수, 김홍수, 안영수, 한문희, 장건익1
한국에너지기술연구원 기능소재연구센터
1충북대학교 재료공학과
Dispersion Characteristics of Slurry and Preparation of Ceramic Paper
Yoon-Jong Yoo, Joon-Soo Kim, Hong-Soo Kim, Young-Soo Ahn, Moon-Hee Han, Gun-Eik Jang1
Functional Materials Research Center, Korea Institute of Energy Research
1Department of Materials Engineering, Chungbuk National University
The sedimentation characteristics of ceramic fiber were analyzed when viscosity of the slurry for ceramic paper formation was varied and zeta potential change and degree of dispersion with pH were studied as well. The proper viscosity of the slurry for dispersion of fibers was between 28 and 31 cps. Zeta potential of the slurry was sensitively changed with pH adjustment and showed maximum value of -35~-36 mV at ph 7.5~9.5, which indicated better dispersion of ceramic fiber as zeta potential of the slurry was increased. The sedimentation rate of ceramic fiber in a slurry was reported minimum at the maximum zeta potential. Water content of the casted paper should be lower than 83% after vacuum dehydration for retention of binder and lower than 62% after press rolling for wet paper handling. The obtained ceramic paper had tensile strength and basis weight, $102 kgf/cm^2$ and $98 g/m^2$, respectively.
Key words: Ceramic paper, Ceramic sheet, Honeycomb adsorbents, Honeycomb rotor
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