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Monolith
A pre-material and solvent technology, which is applied in the field of providing monoliths with multiple channels and filtering water, which can solve problems such as lack of elasticity
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Embodiment 1
[0080] Porous ceramic monoliths were prepared as follows. The suspension was prepared using: alumina (60 wt%) with an average particle diameter of 1 micron, DMSO (33.6 wt%) as solvent, and PESf (6 wt%) as polymer binder, and Arlacel as dispersant P135 (polyethylene glycol 30-dipolyhydroxystearate, Uniqema) (0.4 wt%).
[0081] This suspension was extruded through a 7-channel spinneret at a rate of 7 ml / min, a water flow rate of 12 ml / min and an air gap of 0.5 cm. This forms a 7-channel monolith, which is then sintered at 1350°C. Then the fracture load (fracture loading) of this sample was tested, and the results were as follows:
[0082]
[0083] The as-prepared structure was investigated with SEM. The product was found to be a uniform 7-channel hollow fiber. The structure is self-organized microchannels throughout the fibers with spongy layers between microchannel layers. In addition, there is a skin-like spongy layer at the channel surface and outer surface, uniform c...
Embodiment 2
[0088] Porous ceramic monoliths were prepared as follows. The suspension was prepared using: 1 micron average particle diameter alumina (62 wt%), NMP (31.4 wt%) as solvent, PESf (6.2 wt%) as polymer binder, dispersant (0.4 wt%) .
[0089] This suspension was extruded through a 19-channel spinneret at a speed of 11 ml / min, water flow: 18 ml / min, and without air gaps. This forms a 19-channel monolith, which is then sintered at 1350°C. The breaking load of this sample was then tested, and the results were as follows:
[0090]
[0091] The mercury porosimetry profile shows a slightly more porous channel surface (0.55 microns) through which catalyst or adsorbent can be deposited, with another peak still at 0.18 microns.
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