Fabrication of Ceramic Heat Exchanger Cores by Doctor Blade Process

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J. Korean Ceram. Soc. > Volume 29(3); 1992 > Article

Journal of the Korean Ceramic Society 1992;29(3): 241.

Doctor blade 공정에 의한 세라믹스 열교환기 소자의 제조

김상우, 송휴섭, 장성도

한국과학기술연구원 세라믹스공정연구실

Fabrication of Ceramic Heat Exchanger Cores by Doctor Blade Process

ABSTRACT

The effects of slip composition and processing conditions on the fabrication of ceramic heat exchanger cores by doctor blade process were investigated. Since the effects of those two variables were inter-dependent, the effects of binder system, binder plus plasticizer, were extensively studied for a limited range of processing conditions and a pre-determined ceramic composition. The content of binder system and the ratio of binder to plasticizer were identified as main variables to affect densities and mechanical properties of green sheets, compressive properties and bond strengths of laminates, and shrinkages and their anisotropy of sintered laminates. However, sintered densities and water absorptions of laminates were not influenced by either the content of binder system or the ratio of binder to plasticizer, when the debinded laminates had a relatively high density (relative density of >55% in this study).