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Preparation process of PM2.5 microfiltration separation membrane
The invention provides a preparation process of a PM2.5 microfiltration separation membrane. First, a sec-butyl alcohol solution of aluminum tri-sec-butoxide is dripped into deionized water with the temperature higher than 80 DEG C for hydrolysis, boehmite sediment is generated, HNO3 is added, and stable sol is formed after ageing; the sediment generated after hydrolysis is dissolved into ions, and a sediment-sol reaction is conducted; nanometer aluminum oxide fiber powder or aluminum silicate fiber powder containing zirconium is added into the sol, magnetic stirring and ultrasonic dispersion are conducted, and meanwhile, silica gel is added; a sol solution is attached to an outer surface of a micro-porus ceramic supporting body through a chemical vapor deposition or high-pressure spraying process and is evaporated and dried to form gel; finally, drying is conducted for 6 hours at the constant temperature of 40 DEG C, then the temperature is raised to 60 DEG C, drying is conducted for 4 hours, the temperature is raised to 100 DEG C, drying is conducted for 3 hours, then the gel is put into a kiln and is burnt for 10 hours at the temperature of 500 DEG C, eventually, the temperature is raised to 900-1100 DEG C and is kept for 2 hours, then the gel is cooled naturally and the PM2.5 microfiltration separation membrane is obtained.
Preparation process of PM2.5 microfiltration separation membrane
The invention provides a preparation process of a PM2.5 microfiltration separation membrane. First, a sec-butyl alcohol solution of aluminum tri-sec-butoxide is dripped into deionized water with the temperature higher than 80 DEG C for hydrolysis, boehmite sediment is generated, HNO3 is added, and stable sol is formed after ageing; the sediment generated after hydrolysis is dissolved into ions, and a sediment-sol reaction is conducted; nanometer aluminum oxide fiber powder or aluminum silicate fiber powder containing zirconium is added into the sol, magnetic stirring and ultrasonic dispersion are conducted, and meanwhile, silica gel is added; a sol solution is attached to an outer surface of a micro-porus ceramic supporting body through a chemical vapor deposition or high-pressure spraying process and is evaporated and dried to form gel; finally, drying is conducted for 6 hours at the constant temperature of 40 DEG C, then the temperature is raised to 60 DEG C, drying is conducted for 4 hours, the temperature is raised to 100 DEG C, drying is conducted for 3 hours, then the gel is put into a kiln and is burnt for 10 hours at the temperature of 500 DEG C, eventually, the temperature is raised to 900-1100 DEG C and is kept for 2 hours, then the gel is cooled naturally and the PM2.5 microfiltration separation membrane is obtained.
Preparation process of PM2.5 microfiltration separation membrane
ZHOU XIANGYANG (author) / XIAO MAN (author) / CHEN CHUNLIAN (author) / HUANG ZHIGANG (author) / YANG JUAN (author) / WANG HUI (author) / WEN KANG (author) / LONG BO (author)
2015-04-01
Patent
Electronic Resource
English
| European Patent Office | 2023
| European Patent Office | 2023
| British Library Online Contents | 2015
| European Patent Office | 2024
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