A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of high-pressure-resistant high-flux alumina ceramic nanofiltration membrane support
The invention discloses a preparation method of a high-pressure-resistant high-flux aluminum oxide ceramic nanofiltration membrane support, which comprises the following steps: firstly, uniformly wrapping the surfaces of aluminum oxide ceramic particles with nano particles by adopting a high-pressure hydrothermal method, and filling the nano particles into crack defects in the particles; and then, stably and quickly combining the nano titanium oxide particles into the surface and internal cracks of the large-particle aluminum oxide ceramic powder through a uniform and quick heating process by utilizing a microwave low-temperature quick one-time sintering technology and combining the high wave-absorbing efficiency (the efficiency exceeds the large-particle alpha-aluminum oxide) of the nano titanium oxide particles. According to the invention, the problems of desorption, agglomeration and segregation of nano-particles possibly occurring in the subsequent mixing, forming and sintering processes are effectively avoided, so that the defects and non-uniformity of the ceramic membrane support body are reduced. In addition, 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高压高通量氧化铝陶瓷纳滤膜支撑体的制备方法，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，并填充到颗粒内部的裂纹缺陷中；接着，利用微波低温快速一次烧结技术，通过均匀快速的加热过程，结合纳米氧化钛颗粒的高吸波效率(这一效率超过了大颗粒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内部裂缝中。本发明有效避免了后续混料、成型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。此外，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。
Preparation method of high-pressure-resistant high-flux alumina ceramic nanofiltration membrane support
The invention discloses a preparation method of a high-pressure-resistant high-flux aluminum oxide ceramic nanofiltration membrane support, which comprises the following steps: firstly, uniformly wrapping the surfaces of aluminum oxide ceramic particles with nano particles by adopting a high-pressure hydrothermal method, and filling the nano particles into crack defects in the particles; and then, stably and quickly combining the nano titanium oxide particles into the surface and internal cracks of the large-particle aluminum oxide ceramic powder through a uniform and quick heating process by utilizing a microwave low-temperature quick one-time sintering technology and combining the high wave-absorbing efficiency (the efficiency exceeds the large-particle alpha-aluminum oxide) of the nano titanium oxide particles. According to the invention, the problems of desorption, agglomeration and segregation of nano-particles possibly occurring in the subsequent mixing, forming and sintering processes are effectively avoided, so that the defects and non-uniformity of the ceramic membrane support body are reduced. In addition, 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高压高通量氧化铝陶瓷纳滤膜支撑体的制备方法，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，并填充到颗粒内部的裂纹缺陷中；接着，利用微波低温快速一次烧结技术，通过均匀快速的加热过程，结合纳米氧化钛颗粒的高吸波效率(这一效率超过了大颗粒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内部裂缝中。本发明有效避免了后续混料、成型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。此外，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。
Preparation method of high-pressure-resistant high-flux alumina ceramic nanofiltration membrane support
一种耐高压高通量氧化铝陶瓷纳滤膜支撑体的制备方法
QIU ZHUGUO (author) / HONG YUBIN (author) / FANG FULIN (author) / LAN WEIGUANG (author)
2024-12-31
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
| European Patent Office | 2024
High-flux asymmetric alumina ceramic membrane as well as preparation method and application thereof
| European Patent Office | 2024
Alumina ceramic membrane support with high thermal shock resistance and preparation method thereof
| European Patent Office | 2024
Preparation method of self-cleaning non-blending high-alumina fly ash ceramic membrane support
| European Patent Office | 2023