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High-porosity cordierite porous ceramic and preparation method thereof
The invention belongs to the technical field of porous ceramic materials, and particularly relates to high-porosity cordierite porous ceramic and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing materials containing starch by a dry method, and adding water to obtain slurry; performing ultrasonic treatment to uniformly mix the slurry; heating the slurry to gelatinize the starch; pre-cooling to accelerate seepage of water in the gelatinized starch; freeze-drying at low temperature to obtain a green body; and sintering at 1450 DEG C, preserving heat for 2 hours, cooling to room temperature along with the furnace, and taking out to obtain the high-porosity cordierite porous ceramic. The high-porosity cordierite ceramic carrier with the median pore diameter of 6-28 microns and the porosity of 48-77% is obtained through selection of the pore forming agent and optimization of the preparation process, the pore diameter distribution is narrow, the pore parameters required by a diesel particulate filter (DPF) which is used in a large number and meets the limit value standard of the national six regulations are met, and the high-porosity cordierite ceramic carrier has actual application prospects.
本发明属于多孔陶瓷材料技术领域，具体涉及一种高孔隙率的堇青石多孔陶瓷及其制备方法。该制备方法包括步骤：将包含淀粉的物料干法混匀后加水得浆料；超声使浆料混合均匀；加热浆料使淀粉糊化；预冷却，以加速糊化淀粉中水分的渗出；低温冷冻干燥获得生坯；在1450℃烧结并保温2h，然后随炉冷却至室温后取出，制得高孔隙率的堇青石多孔陶瓷。本发明通过造孔剂的选择和制备工艺的优化，得到中值孔径6‑28μm、孔隙率48‑77％的高孔隙率堇青石陶瓷载体，且孔径分布较窄，满足国六法规限值标准并且大量使用的柴油颗粒过滤器DPF所要求的孔参数，具有实际的应用前景。
High-porosity cordierite porous ceramic and preparation method thereof
The invention belongs to the technical field of porous ceramic materials, and particularly relates to high-porosity cordierite porous ceramic and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing materials containing starch by a dry method, and adding water to obtain slurry; performing ultrasonic treatment to uniformly mix the slurry; heating the slurry to gelatinize the starch; pre-cooling to accelerate seepage of water in the gelatinized starch; freeze-drying at low temperature to obtain a green body; and sintering at 1450 DEG C, preserving heat for 2 hours, cooling to room temperature along with the furnace, and taking out to obtain the high-porosity cordierite porous ceramic. The high-porosity cordierite ceramic carrier with the median pore diameter of 6-28 microns and the porosity of 48-77% is obtained through selection of the pore forming agent and optimization of the preparation process, the pore diameter distribution is narrow, the pore parameters required by a diesel particulate filter (DPF) which is used in a large number and meets the limit value standard of the national six regulations are met, and the high-porosity cordierite ceramic carrier has actual application prospects.
本发明属于多孔陶瓷材料技术领域，具体涉及一种高孔隙率的堇青石多孔陶瓷及其制备方法。该制备方法包括步骤：将包含淀粉的物料干法混匀后加水得浆料；超声使浆料混合均匀；加热浆料使淀粉糊化；预冷却，以加速糊化淀粉中水分的渗出；低温冷冻干燥获得生坯；在1450℃烧结并保温2h，然后随炉冷却至室温后取出，制得高孔隙率的堇青石多孔陶瓷。本发明通过造孔剂的选择和制备工艺的优化，得到中值孔径6‑28μm、孔隙率48‑77％的高孔隙率堇青石陶瓷载体，且孔径分布较窄，满足国六法规限值标准并且大量使用的柴油颗粒过滤器DPF所要求的孔参数，具有实际的应用前景。
High-porosity cordierite porous ceramic and preparation method thereof
一种高孔隙率的堇青石多孔陶瓷及其制备方法
LIU GANG (author) / YAN JIAQI (author) / CHENG SHUJIA (author) / CHENG SHUFEN (author) / DONG JIYOU (author) / CHEN LIN (author) / ZHENG KANG (author) / TIAN XINGYOU (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Cordierite porous ceramic and preparation method thereof
| European Patent Office | 2023
| European Patent Office | 2023
Cordierite ceramic carrier and preparation method thereof
| European Patent Office | 2024