| 摘要 |
PURPOSE:To improve the surface smoothness, workability and thermal decomposability of a ceramic green sheet by limiting the evaporation index of an org. solvent used at the time of preparing a slurry as starting material for producing the green sheet. CONSTITUTION:When a slurry consisting of ceramic powder, an org. binder and an org. solvent or further contg. a dispersant and a plasticizer is cast on a polymer film to produce a ceramic green sheet, the org. solvent is used so that the ratio of the evaporation index to the wt.% is regulated to <=450. Powder of at least one among alumina, alumina-glass and zirconia is used as the ceramic powder and at least one among alcohols, ketones, aliphatic hydrocarbon, arom. hydrocarbon and acetic esters is used as the org. solvent. A ceramic green sheet having <=0.1mum average surface roughenss (Ra) along the center line and <=1mum max. height (Rmax) is obtd. |
