Polyamide composite reverse osmosis membrane with high permeability selectivity and tolerance and preparation method of polyamide composite reverse osmosis membrane
The invention relates to a polyamide composite reverse osmosis membrane with high permeability selectivity and tolerance and a preparation method of the polyamide composite reverse osmosis membrane. The adopted membrane preparation method is an interface polymerization addition strategy, and two fun...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a polyamide composite reverse osmosis membrane with high permeability selectivity and tolerance and a preparation method of the polyamide composite reverse osmosis membrane. The adopted membrane preparation method is an interface polymerization addition strategy, and two functional additives, namely fluoride containing carbon-carbon double bonds and hydantoin compound containing carbon-carbon double bonds, are pre-loaded; a separation layer preliminary forming process dominated by interfacial polymerization reaction and a separation layer structure regulation process dominated by ultraviolet-initiated graft polymerization reaction are combined; the macroscopic upper membrane separation layer has a high effective area and a low effective thickness, the microcosmic upper membrane separation layer surface is jointly modified by a low surface energy fluorine-containing compound and a hydantoin compound, and the membrane separation layer body is modified by the hydantoin compound. The prep |
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