Abstract
Inner stress of alumina green sheet was evaluated by using green sheets composed of alumina particles with surface areas of 2.0, 6.0 and 13.4m2/g. Suspensions were prepared by mixing alumina, solvent, plasticizer and acrylic polymer. Inner stress was calculated by measuring the camber of green sheet formed on PET film after drying. The camber was first observed at the last stage of the constant rate drying period. As the weight loss increased, the camber increased during the decreasing rate drying period. As the surface area of alumina increased, inner stress of green sheet increased at the same solid content of suspension. It was found that the inner stress is affected by the storage modules (G′), tan σ and the free polymers in the suspension.
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