Carbon film laminate and method for production thereof, and VOC removing device
A manufacturing method and a technology for a laminate, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of inability to obtain efficient separation, insufficient research, etc., to suppress cracks and pinholes, remove The effect of improving performance and reducing VOC concentration
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Embodiment 1
[0128] Use sandpaper to grind the surface of porous alumina (manufactured by Nippon Gaishi Co., Ltd., average particle diameter 3 μm, average pore diameter 0.5 μm, φ14 mm, t=1.5 mm disc) until it is flat visually, and obtain porous alumina. Body. Add 3wt% of alumina powder (manufactured by Sumitomo Chemical Co., Ltd., AKP-15), ion-exchanged water and dispersant (manufactured by Toagosei Co., Ltd., Aron A-6114) with an average particle diameter of 0.7 μm. Washer mixed to obtain 60wt% alumina slurry. The alumina slurry was coated on the above-mentioned alumina porous body by spin coating, dried at 150°C for 1 hour in the air atmosphere, and dried in an oven. In a type furnace, sintering at 1300° C. for 2 hours in the air atmosphere prepared an alumina intermediate layer (A) (a porous body with an intermediate layer). In 40 wt % titanium oxide slurry (manufactured by Ishihara Sangyo Co., Ltd., Mix ion-exchanged water in STS-21 (average particle size 20nm)) to obtain 4wt% titanium...
Embodiment 2
[0132] In the same procedure as in Example 1, a titanium oxide fine particle layer (a) (surface layer) was provided on the aluminum oxide intermediate layer (A). Coating the polyamic acid solution (I) of 3 times the amount of Example 1 on the titanium oxide particle layer (a) by spin coating, heat treatment according to the same steps as in Example 1, on the titanium oxide particle layer (a) The precursor of the carbon film was obtained. The obtained carbon film precursor was heat-treated in the same procedure as in Example 1 to obtain a carbon film laminate.
Embodiment 3
[0134] Use sandpaper to grind the surface of porous alumina (manufactured by Nippon Gaishi Co., Ltd., average particle diameter 3 μm, average pore diameter 0.5 μm, φ14 mm, t=1.5 mm disc) until it is flat visually, and obtain porous alumina. body. Add 3 wt% of alumina powder (Sumitomo Chemical Co., Ltd., AKP-50) with an average particle diameter of 0.2 μm, ion-exchanged water and a dispersant (Toagosei Co., Ltd., Aron-A6114), and mix them by a ball mill to obtain 40 wt% alumina·slurry. The alumina-slurry was coated on the above alumina porous body by the spin coating method, dried at 150° C. for 1 hour in the air atmosphere, and sintered at 1350° C. in the air atmosphere for 2 hours. hours, an alumina intermediate layer (B) (a porous body provided with an intermediate layer) was prepared. Ion-exchanged water was mixed with 40 wt % titanium oxide slurry (manufactured by Ishihara Sangyo Co., Ltd., STS-21 (average particle diameter: 20 nm)) to obtain a 4 wt % titanium oxide slur...
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