ムライト原料粉体の水中粉砕における分散剤添加時期の成形体特性に及ぼす影響

概要

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Effects of addition timing of dispersant on the slurry viscosity and various properties of slip cast bodies were examined. The dispersant was added during grinding with an agitation bead mill or after grinding. The addition during grinding was more effective in decreasing the slurry viscosity and in increasing the density of slip cast bodies. These effects were caused by the difference in the adsorbed state of the disper sant. With addition after grinding, the dispersant ad sorbed on the powder was apt to be detached, while with addition during grinding, the amount of disper sant desorbed during subsequent processing was much smaller, presumably due to the stronger and irreversi ble adsorption immediately after the creation of active centers on the substrate surface.
社団法人日本セラミックス協会の論文
1994-04-01