Complex Modulus of Alumina Green Tapes Measured by Micro Fourier Rheometer

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J. Korean Ceram. Soc. > Volume 36(2); 1999 > Article

Journal of the Korean Ceramic Society 1999;36(2): 122.

Micro Fourier Rheometer에 의한 알루미나 그린 테이프의 Complex Modulus 측정

이정훈, 이명현¹, 김창은², 김대준¹, Michael V. Swain³, Bruno Pfister³

연세대학교 세라믹학과
¹한국과학기술연구원 세라믹스연구부
²연세대학교 세라믹공학과
³호주 CSIRO Telecommunication & Industrial Physics

Complex Modulus of Alumina Green Tapes Measured by Micro Fourier Rheometer

ABSTRACT

Alumina tapes, having various weight ratios of alumina powder/(alumina+binder+plasticizer), X, and binder / (binder+plsticizer), Y, were prepared and their complex modulus was measured using Micro Fourier Rheometer. As the X and Y ratios increased, Transfer function(TF) magnitude and Transfer function (TF) phase increased and decreased, respectively, indicating that the elastic modulus of the tapes depends on the weight ratios. The temperature dependence of the viscosity of the tapes was visualized by the decreased TF magnitude and the increased TF phase. The Y ratio dependence of the complex modulus related to the glass transition temperature of the tapes and the moduls change by the Y ratio was higher than that by the X ratio within the comperature of the tapes and the modulus changes by the Y ratio was higher than that by the X ratio within the composition range, investigated in the present study. The measurement of the complex modulus of the alumina tapes suggested that the TF phase should be higher that 17$^{circ}$for the tapes to be utilized for 3-dimensional shaping.

Key words: Complex modulus, Alumina green tape, Binder, Plasticizer