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Oil-stain-resistant aluminum oxide ceramic membrane for filtering special gas and preparation method thereof
The invention discloses an oil-stain-resistant special gas filtering aluminum oxide ceramic membrane and a preparation method thereof.The preparation method includes the steps that firstly, a high-pressure hydrothermal method is adopted, the surfaces of aluminum oxide ceramic particles are evenly wrapped with nano particles, and crack defects in the particles are filled; then, by adopting a microwave low-temperature rapid one-time sintering technology, by utilizing a uniform and rapid heating mode and combining the high wave-absorbing efficiency of the nano titanium oxide particles (the efficiency is superior to that of the large-particle alpha-aluminum oxide), the nano titanium oxide particles are stably and rapidly combined into cracks on the surface of the large-particle aluminum oxide ceramic powder and in the particles. According to the method, the problems of desorption, agglomeration and segregation of nano-particles possibly occurring in the subsequent ball milling, film coating and sintering processes are effectively avoided, so that the defects and non-uniformity of the ceramic film support body are reduced. Meanwhile, compared with a traditional heating method, more uniform temperature distribution is achieved through microwave heating, and abnormal agglomeration and growth of nanocrystals are prevented.
本发明公开了一种耐油污特种气体过滤氧化铝陶瓷膜及其制备方法，首先采用高压水热法，首先采用高压水热法，将纳米粒子均匀地包裹在氧化铝陶瓷颗粒的表面，并填充颗粒内部的裂纹缺陷；接着采用了微波低温快速一次烧结技术，利用均匀快速的加热方式，结合纳米氧化钛颗粒的高吸波效率(这一效率优于大颗粒α‑氧化铝)，将纳米氧化钛颗粒稳定且迅速地结合到大颗粒氧化铝陶瓷粉体的表面和颗粒内部的裂缝中。本发明有效避免了后续球磨、涂膜及烧结过程中可能出现的纳米颗粒脱附、团聚和偏析问题，从而减少了陶瓷膜支撑体的缺陷和不均匀性。同时，与传统加热方法相比，本发明中的微波加热实现了更均匀的温度分布，防止了纳米晶粒的异常团聚和生长。
Oil-stain-resistant aluminum oxide ceramic membrane for filtering special gas and preparation method thereof
The invention discloses an oil-stain-resistant special gas filtering aluminum oxide ceramic membrane and a preparation method thereof.The preparation method includes the steps that firstly, a high-pressure hydrothermal method is adopted, the surfaces of aluminum oxide ceramic particles are evenly wrapped with nano particles, and crack defects in the particles are filled; then, by adopting a microwave low-temperature rapid one-time sintering technology, by utilizing a uniform and rapid heating mode and combining the high wave-absorbing efficiency of the nano titanium oxide particles (the efficiency is superior to that of the large-particle alpha-aluminum oxide), the nano titanium oxide particles are stably and rapidly combined into cracks on the surface of the large-particle aluminum oxide ceramic powder and in the particles. According to the method, the problems of desorption, agglomeration and segregation of nano-particles possibly occurring in the subsequent ball milling, film coating and sintering processes are effectively avoided, so that the defects and non-uniformity of the ceramic film support body are reduced. Meanwhile, compared with a traditional heating method, more uniform temperature distribution is achieved through microwave heating, and abnormal agglomeration and growth of nanocrystals are prevented.
本发明公开了一种耐油污特种气体过滤氧化铝陶瓷膜及其制备方法，首先采用高压水热法，首先采用高压水热法，将纳米粒子均匀地包裹在氧化铝陶瓷颗粒的表面，并填充颗粒内部的裂纹缺陷；接着采用了微波低温快速一次烧结技术，利用均匀快速的加热方式，结合纳米氧化钛颗粒的高吸波效率(这一效率优于大颗粒α‑氧化铝)，将纳米氧化钛颗粒稳定且迅速地结合到大颗粒氧化铝陶瓷粉体的表面和颗粒内部的裂缝中。本发明有效避免了后续球磨、涂膜及烧结过程中可能出现的纳米颗粒脱附、团聚和偏析问题，从而减少了陶瓷膜支撑体的缺陷和不均匀性。同时，与传统加热方法相比，本发明中的微波加热实现了更均匀的温度分布，防止了纳米晶粒的异常团聚和生长。
Oil-stain-resistant aluminum oxide ceramic membrane for filtering special gas and preparation method thereof
一种耐油污特种气体过滤氧化铝陶瓷膜及其制备方法
QIU ZHUGUO (author) / HONG YUBIN (author) / FANG FULIN (author) / LAN WEIGUANG (author)
2024-12-31
Patent
Electronic Resource
Chinese
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