| 회전형 레오미터와 진동형 점도계를 이용한 세라믹 슬러리의 점도 비교 |
| 지혜, 임형미, 장영욱1, 이희수2 |
한국세라믹기술원 에코복합소재센터
1한양대학교 융합화학공학과
2부산대학교 재료공학부 |
| Comparison of the Viscosity of Ceramic Slurries using a Rotational Rheometer and a Vibrational Viscometer |
| Hye Ji, Hyung Mi Lim, Young-Wook Chang1, Heesoo Lee2 |
Eco-Composite Materials, Korea Institute of Ceramic Engineering & Technology
1Department of Chemical Engineering, Hanyang University
2School of Materials Science & Engineering, Pusan National University |
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| ABSTRACT |
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The viscosity of a ceramic slurry depends on the slurry concentration, particle shape and size, hydrodynamic interactions, temperature, shear rate, pre-treatment condition and the method of measurement with the selected equipment. Representative ceramic slurries with low to high viscosity levels are selected from colloidal silica, barium titanate slurry and glass frit paste. Rotational rheometers and vibrational viscometers are used to compare the measured viscosity for various ceramic slurries. The rotational rheometer measured the viscosity according to the change of the shear rate or the rotational speed. On the other hand, the vibrational viscometer measured one point of the viscosity in a fixed vibrational mode. The rotational rheometer allows the measurement of the viscosity of a ceramic paste with a viscosity higher than 100,000 cP, while the vibrational viscometer provides an easy and quick method to measure the viscosity without deformation of the ceramic slurry due to the measurement method. It is necessary to select suitable equipment with which to measure the viscosity depending on the purpose of the measurement. |
| Key words:
Ceramic slurry, Viscosity, Rotational rheometer, Vibrational viscometer |
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