Method for recycling and reusing organic-inorganic composite membrane ceramic support body
An inorganic composite membrane and support technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of high production costs and technical requirements, reduce raw material production costs and consumption of mineral resources, improve efficiency, The effect of high mechanical strength
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Embodiment 1
[0027] (1) PDMS / ceramic tube (pore diameter is 250nm and transition layer is ZrO 2 ) composite film is placed in a tube-type high-temperature furnace and calcined under the protection of nitrogen atmosphere. From room temperature to 900°C, the heating rate is 2°C / min; the holding time is 5h; then it is lowered to room temperature, and the cooling rate is 4°C / min. The calcined ceramic support was cleaned in an ultrasonic device with a power of 100W for 1 hour, and then dried at 100°C for use after taking it out.
[0028] (2) Coating the PDMS coating solution with a viscosity of 120cP at 25°C and 8wt% on the recycled and cleaned ceramic tube support for 80s. Naturally cured in the air for 24 hours after taking it out. Dry at 100°C to obtain a composite film.
[0029] The cross-sectional scanning electron microscope photos of the prepared PDMS / ceramic tube composite membrane are as follows: figure 1 As shown, it can be seen from the electron microscope image that the organic ...
Embodiment 2
[0032] (1) PDMS / ceramic sheet (aperture is 300nm, material is ZnO 2 ) The composite film is placed in a tube-type high-temperature furnace and calcined under the protection of an argon atmosphere. From room temperature to 900°C, the heating rate is 2°C / min; the holding time is 6h; then it is lowered to room temperature, and the cooling rate is 2°C / min. The ceramic support body calcined in the atmosphere was placed in an ultrasonic device with a power of 100 W for cleaning for 1 hour, and then dried at 100° C. for use after taking it out.
[0033] (2) Coating the PDMS coating solution with a viscosity of 100cP and 10wt% at 25°C to the recovered and cleaned ZnO 2 On the ceramic sheet, the coating time is 50s. Naturally cured in the air for 24 hours after taking it out. Dry at 70°C to obtain a composite film. The film thickness is about 6.5 μm.
[0034] Measure the separation performance of the composite membrane prepared in this example for 40°C, 5wt% ethanol / water system, ...
Embodiment 3
[0036] (1) PDMS / ceramic hollow fiber (aperture is 100nm, material is Al 2 o 3 ) composite film is placed in a tube-type high-temperature furnace and calcined under the protection of nitrogen atmosphere. From room temperature to 900°C, the heating rate is 2°C / min; the holding time is 6h; then it is lowered to room temperature, and the cooling rate is 2°C / min. The ceramic support body calcined in the atmosphere was placed in an ultrasonic device with a power of 100 W for cleaning for 2 hours, and then dried at 100° C. for use after taking it out.
[0037] (2) Coating the PDMS coating solution with a viscosity of 80cP and 10wt% at 25°C to the recovered and cleaned Al 2 o 3On the hollow fiber, the coating time is 70s. Naturally cured in the air for 24 hours after taking it out. Dry at 100°C to obtain a composite film. The film thickness is about 5.5 μm.
[0038] Determination of the separation performance of the composite membrane prepared in this example for 40°C, 1wt% but...
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