Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing porous ceramic by vibration freeze-drying technology
The invention discloses a method for preparing porous ceramics by a vibration freeze-drying technology. The method comprises the following steps: step 1, fully mixing 0.5-1.5% by mass of a binder, 30-50% by mass of ceramic powder, 0.6-0.8% by mass of a dispersant and distilled water; step 2, putting the obtained mixture into a ball mill, and grinding for 20-60 minutes at the speed of 200-1000r/min, so as to obtain ceramic slurry with a freeze-drying characteristic; 3, the ceramic slurry obtained in the step 2 is injected into a heat transfer material mold with an opening in the upper end, then the mold is installed on a vibrator, and the vibrator with the mold is placed in the low-temperature environment of-20 DEG C to-50 DEG C to vibrate for 1-2 h at the frequency of 2-10 Hz and the amplitude of 1-3 mm; 4, after the ceramic slurry is completely frozen, the frozen slurry and the mold are put into a freeze dryer together for low-pressure drying, and a porous ceramic green body is obtained; 5, the porous ceramic green body prepared in the step 4 is put into a sintering furnace to be sintered at the temperature of 1350-1650 DEG C, and the porous ceramic is obtained.
本发明公开了一种振动冷冻干燥技术制备多孔陶瓷的方法，包括以下步骤：步骤1：将质量百分比为0.5％～1.5％的粘结剂、质量百分比为30％～50％的陶瓷粉末、0.6％～0.8％的分散剂和蒸馏水充分混合；步骤2：将所得到的混合物放入球磨机，以200～1000r/min研磨20～60min，得到具有冷冻干燥特性的陶瓷浆料；步骤3：将步骤2得到的陶瓷浆料注入上端开口的传热材料模具中，然后将模具装在振动器上，将装有模具的振动器置于‑20～－50℃的低温环境中以2～10Hz频率、1～3mm振幅振动1h～2h；步骤4：陶瓷浆料完全冻结后，将冻结浆料连同模具一起放入冷冻干燥机中进行低压干燥，得到多孔陶瓷生坯；步骤5：将步骤4制得的多孔陶瓷生坯放入烧结炉以1350℃～1650℃的温度烧结，得到多孔陶瓷。
Method for preparing porous ceramic by vibration freeze-drying technology
The invention discloses a method for preparing porous ceramics by a vibration freeze-drying technology. The method comprises the following steps: step 1, fully mixing 0.5-1.5% by mass of a binder, 30-50% by mass of ceramic powder, 0.6-0.8% by mass of a dispersant and distilled water; step 2, putting the obtained mixture into a ball mill, and grinding for 20-60 minutes at the speed of 200-1000r/min, so as to obtain ceramic slurry with a freeze-drying characteristic; 3, the ceramic slurry obtained in the step 2 is injected into a heat transfer material mold with an opening in the upper end, then the mold is installed on a vibrator, and the vibrator with the mold is placed in the low-temperature environment of-20 DEG C to-50 DEG C to vibrate for 1-2 h at the frequency of 2-10 Hz and the amplitude of 1-3 mm; 4, after the ceramic slurry is completely frozen, the frozen slurry and the mold are put into a freeze dryer together for low-pressure drying, and a porous ceramic green body is obtained; 5, the porous ceramic green body prepared in the step 4 is put into a sintering furnace to be sintered at the temperature of 1350-1650 DEG C, and the porous ceramic is obtained.
本发明公开了一种振动冷冻干燥技术制备多孔陶瓷的方法，包括以下步骤：步骤1：将质量百分比为0.5％～1.5％的粘结剂、质量百分比为30％～50％的陶瓷粉末、0.6％～0.8％的分散剂和蒸馏水充分混合；步骤2：将所得到的混合物放入球磨机，以200～1000r/min研磨20～60min，得到具有冷冻干燥特性的陶瓷浆料；步骤3：将步骤2得到的陶瓷浆料注入上端开口的传热材料模具中，然后将模具装在振动器上，将装有模具的振动器置于‑20～－50℃的低温环境中以2～10Hz频率、1～3mm振幅振动1h～2h；步骤4：陶瓷浆料完全冻结后，将冻结浆料连同模具一起放入冷冻干燥机中进行低压干燥，得到多孔陶瓷生坯；步骤5：将步骤4制得的多孔陶瓷生坯放入烧结炉以1350℃～1650℃的温度烧结，得到多孔陶瓷。
Method for preparing porous ceramic by vibration freeze-drying technology
一种振动冷冻干燥技术制备多孔陶瓷的方法
ZHANG GENG (Autor:in) / CHEN HUA (Autor:in) / ZHANG CHUANYUN (Autor:in) / HU JIE (Autor:in) / FANG YADONG (Autor:in) / FAN QINGMING (Autor:in) / ZHANG FAN (Autor:in)
09.04.2024
Patent
Elektronische Ressource
Chinesisch
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