Method for preparing titanium dioxide ceramic micro filter membrane on the porous stainless steel base
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A ceramic microfiltration, stainless steel technology, applied in the field of metallurgical chemistry, can solve problems such as sudden damage, short service life, and performance defects
Inactive Publication Date: 2007-10-17
SHAANXI NORMAL UNIV
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Problems solved by technology
In the field of membrane technology, the membrane material developed earlier is an organic polymer membrane, that is, an organic membrane. The organic membrane has poor thermal stability and corrosion resistance, is not easy to clean, and has a short service life.
The thermal stability and corrosion resistance of the subsequently developed inorganic ceramic membranes are better than those of organic membranes. However, the ceramic substrate is brittle and prone to sudden damage during use, so both organic membranes and ceramic membranes have obvious performance defects.
At present, there is no membrane material that is resistant to strong acid, strong alkali and high temperature, and has a long service life.
Method used
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[0007] The present invention can specifically carry out according to the following technical solutions:
[0008] a. Use tetra-n-butyl titanate to hydrolyze TiO 2 sol
[0010] a.2 Add tetra-n-butyl titanate and absolute ethanol into the Erlenmeyer flask and stir to form a mixed solution
[0011] a.3 Add hydrochloric acid dropwise into the mixed solution and stir rapidly
[0012] a.4 Add deionized water drop by drop
[0013] a.5 Continue to stir for 2 to 5 minutes
[0014] a.6 Get TiO 2 Sol;
[0015] b. to dilute
[0016] b.1 Dilute TiO with absolute ethanol 2 Sol concentration to 0.0026mol / L
[0017] c. Add adhesive
[0018] c.1 Add PVB adhesive to dilute sol
[0019] c.2 The addition ratio is 10% of the sol;
[0020] d. aging
[0021] d.1 Carry out at 15℃~20℃
[0022] d.2 Time 12~14h
[0023] d.3 Prepare the coating liquid;
[0024] e. Clean the porous stainless steel substrate
[0025] e.1 Wash...
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PUM
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pore size
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Abstract
The invention discloses a method for preparing TiO2 ceramics micro-filter film on the porous stainless steel matrix, and to the field of metallurgical chemistry. The technical proposal is that: titanic acid four dinbutyl phthalate is hydrolyzed to get TiO2 sol, dilute, add binder, aging the film coating liquid, wash the porous stainless steel matrix, coat film, dry, heat treatment the xerogel film, and then get the TiO2 ceramics micro-filter film. The TiO2 ceramics micro-filter film with an aperture of 0.3-0.8 mum can be prepared on the porous stainless steel matrix with an aperture of 1 mum based on the said technical proposal, and the ceramics micro-filter film can be prepared to be micro-filter film component to replace the organic micro-filter film used at present, is used abroad in the field of electron, foodstuff, environmental protection, chemical industry, metallurgy, medicine, biology, energy sources, petroleum, bionics and so on, can separate the water, waste water and other suspended liquid material, and has a broad market prospect.
Description
technical field [0001] The invention relates to a method for preparing a microfiltration membrane, in particular to a method for preparing TiO on a porous stainless steel substrate. 2 The invention discloses a ceramic microfiltration membrane method, which belongs to the field of metallurgical chemistry. Background technique [0002] Membrane separation technology is a new, efficient and precise separation technology successfully developed in the 20th century. It is widely used in electronics, food, environmental protection, chemical industry, metallurgy, medicine, biology, energy, petroleum, bionics and other fields. In the field of membrane technology, the membrane material developed earlier is an organic polymer membrane, that is, an organic membrane. The organic membrane has poor thermal stability and corrosion resistance, is not easy to clean, and has a short service life. The thermal stability and corrosion resistance of the subsequently develop...
Claims
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Application Information
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