Packing Density and Consolidation Energy of Colloidal Particles through Pressure Filtration
Packing Density and Consolidation Energy of Colloidal Particles through Pressure Filtration
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压力过滤胶体颗粒的堆积密度和固结能
DOI：
10.4028/www.scientific.net/ast.45.471
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Y. Sakamoto
中科院分区：
文献类型：
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作者：
Y. Hirata;Yosuke Tanaka;Y. Sakamoto
使用压力过滤装置连续记录 pH 3 - 10 下 15 vol% Al2O3 悬浮液（0.15 μm α-Al2O3 颗粒，等电点 pH 7.8）在密闭圆筒中固结过程中施加的压力和悬浮液高度。表观粘度随着悬浮液pH值的降低而降低。在 19 MPa 的施加压力下，分散的酸性悬浮液在 pH 3.2 和 5.6 下的最终堆积密度达到 62 – 63%。 pH 值 7.8 和 9.6 的粘性基本悬浮液被固结至 52 – 54% 密度。由于储存的弹性应变能的释放，释放压力后固结Al2O3压坯的高度增加。固结 1 cm3 Al2O3 颗粒所需的能量在 3.0 至 15.9 J 范围内，并且对于分散的酸性悬浮液来说变得更大。将固结过程中两个胶体颗粒之间施加的能量 (W) 与悬浮液中两个颗粒之间的相互作用能 (Ei) 进行比较。
The applied pressure and suspension height during consolidation of a 15 vol% Al2O3 suspension (0.15 μm α-Al2O3 particles, isoelectric point pH 7.8) at pH 3 - 10 in a closed cylinder were continuously recorded using a pressure filtration apparatus. The apparent viscosity decreased with decreasing suspension pH. The final packing density of the dispersed acidic suspensions at pH 3.2 and 5.6 reached 62 – 63% at 19 MPa of applied pressure. The viscous basic suspensions at pH 7.8 and 9.6 were consolidated to 52 – 54 % density. Because of the release of the stored elastic strain energy, the height of the consolidated Al2O3 compact increased after releasing the pressure. The energy required to consolidate 1 cm3 of Al2O3 particles was in the range from 3.0 to 15.9 J, and became larger for the dispersed acidic suspensions. The energy applied between two colloidal particles during consolidation (W) was compared to the interaction energy (Ei) between two particles in a suspension.
通过压力过滤对纳米粒子进行胶体固结
DOI：
--
发表时间：
2006
期刊：
Journal of the American Ceramic Society 89巻6号
影响因子：
--
作者：
Y.Hirata;M.Nakamura;M.Miyamoto;Y.Tanaka;X.H.Wang
通讯作者：
X.H.Wang