Binary solvent mixture for tape casting of TiO₂ sheets

详细信息    查看全文

• 作者：Jingxian ; Zhang ; Dongliang ; Jiang ; Weisensel ; Lars ; Greil ; Peter
• 关键词：Rheology ; Slurry ; Tape casting ; TiO₂
• 刊名：Journal of the European Ceramic Society
• 出版年：2004
• 出版时间：January, 2004
• 年：2004
• 卷：24
• 期：1
• 页码：147-155
• 全文大小：515 K

文摘

Four azeotropic binary solvent mixtures based on ethanol/methyl ethyl ketone, ethanol/toluene, isopropanol/methyl ethyl ketone and isopropanol/toluene were studied for the dispersion of TiO₂ powders. Two different polyvinyl butyral polymers (PVB79 and PVB98) were selected as dispersant and as binder and dibutyl phthalate (DBP) was used as plasticizer. The dispersability of TiO₂ suspensions was characterized by rheological measurements and sedimentation tests. After tape casting, the properties of Green tapes were tested in term of density, surface roughness and strength. Results showed that azeotropic EtOH/MEK mixture is the effective solvent system for tape casting of TiO₂ sheets. The TiO₂ tapes served for multilayer ceramic/metal composite manufacturing.