Nickel alloy hollow fiber membrane and its preparation method and application
A fiber membrane, nickel alloy technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the practical production application of Pd membrane stability limitation, the difficulty of synthesis of porous support composite palladium membrane, reduce the cost of Pd membrane, etc. problems, to achieve the effect of convenient industrial production and large-scale application, less raw material consumption, and low film thickness
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Embodiment 1
[0026] Weigh 1g of polymethyl methacrylate and dissolve it in 30g of N,N-dimethylacetamide solvent, add 100g of nickel powder and 5g of metal vanadium powder with a particle size of 1.5 μm, stir for 30 minutes, and gradually add 10g of polyacrylonitrile , and stirred for 24 hours to completely dissolve the polyacrylonitrile to obtain a uniform and stable casting solution. The weight ratio of each component in the casting solution is nickel powder: alloy powder: binder: solvent: auxiliary agent = 1:0.05:0.1:0.3:0.01.
[0027] Place the above prepared casting solution in a 0.2 MPa vacuum box for degassing for 1 hour, and then move it to the spinning equipment tank. Under the pressure of 0.3MPa nitrogen or argon, use 90% NMP-10% absolute ethanol solution as the core liquid, squeeze the casting liquid through the spinning head into the water bath at 25°C, and cure it for 24 hours until it is fully cured to obtain Nickel-vanadium alloy hollow fiber membrane precursor.
[0028] Th...
Embodiment 2
[0031]Take by weighing 1.6g polyammonium methacrylate and dissolve in 32gN, in the N-dimethylformamide solvent, add 80g particle diameter and be the nickel powder of 5 μm, the metal vanadium powder of 4g metal niobium powder and the metal vanadium powder of 4g, stir 30 minutes, in gradually Add 16 g of polyethersulfone and stir for 24 hours to completely dissolve the polyethersulfone to obtain a uniform and stable casting solution. The weight ratio of each component in the casting solution is nickel powder: alloy powder: binder: solvent: auxiliary agent = 1:0.1:0.2:0.4:0.02.
[0032] The above prepared casting solution was degassed in a 0.01 MPa vacuum box for 5 h, and then moved to the spinning equipment tank. Under the pressure of 4MPa nitrogen or argon, use deionized aqueous solution as the core liquid, squeeze the casting liquid through the spinning head into a 100% absolute ethanol bath at 25°C, and solidify for 24 hours to obtain nickel- Niobium-vanadium alloy hollow fi...
Embodiment 3
[0035] Weigh 1g of polyvinylpyrrolidone and dissolve it in 20g of N-methylpyrrolidone solvent, add 50g of nickel powder with a particle size of 0.1 μm, 5g of metal vanadium powder and 7.5g of metal tantalum powder, stir for 30 minutes, then gradually add 5g of polysulfone, stir After 24 hours, the polysulfone was completely dissolved to obtain a uniform and stable casting solution. The weight ratio of each component in the casting solution is nickel powder: alloy powder: binder: solvent: auxiliary agent = 1:0.25:0.1:0.4:0.02.
[0036] Place the above prepared casting solution in a 0.1MPa vacuum box for degassing for 2h, and then move it to the spinning equipment tank. Under 0.01MPa nitrogen or argon pressure, use 90% NMP-water solution as the core liquid, squeeze the casting liquid through the spinning head into a water bath at 20°C, and solidify for 24 hours to obtain nickel-vanadium-tantalum Alloy hollow fiber membrane precursor.
[0037] The above-mentioned hollow fiber m...
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