High-strength pollution-resistant composite reverse osmosis membrane and preparation method thereof

A reverse osmosis membrane, high-strength technology, used in reverse osmosis, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problem of poor flux and antibacterial performance of reverse osmosis membranes, no interaction between dopamine and silver, and has not yet been found Carbon nanowire applications and other issues, to achieve the effect of excellent dispersion performance, high mechanical strength and stability, and increased use stability
CN112403288AActive Publication Date: 2021-02-26JIANGSU LONGMEM ENVIRONMENTAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU LONGMEM ENVIRONMENTAL TECH CO LTD
Publication Date
2021-02-26

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Abstract

The invention relates to a preparation method and application of a high-strength pollution-resistant composite reverse osmosis membrane, and the method comprises the following steps: synthesizing aminated carbon nanowires, fixing the nanowires in the reverse osmosis membrane, and by utilizing the high strength of the aminated carbon nanowires and the reactivity of amino groups, forming a double cross-linked layer of m-phenylenediamine (MPD) trimesoyl chloride (TMC) and aminated carbon nanowire trimesoyl chloride (TMC), so the stability and the mechanical strength of a desalting layer are greatly improved, and meanwhile, the flux and the desalting performance of reverse osmosis are also improved due to excellent dispersing performance, rich hydrophilic amino groups and relatively large specific surface area of aminated carbon nanowires. The test result also shows that compared with the existing reverse osmosis membrane, the reverse osmosis membrane prepared by the invention has higher mechanical strength, flux and desalination performance.
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Description

technical field

[0001] The invention relates to the technical field of reverse osmosis membranes, in particular to a preparation method and application of a high-strength, pollution-resistant composite reverse osmosis membrane. Background technique

[0002] With the progress of society, people pay more and more attention to water resources. Reverse osmosis membrane is one of the most widely used separation membrane products with the best application effect in the field of separation membrane.

[0003] The interfacial polymerization method is currently the most important method for preparing reverse osmosis composite membranes. The polysulfone support layer is used as the base membrane, and a dense polyamide desalination layer is formed on the polysulfone support layer through the mutual reaction between two active monomers, polyacyl chloride and polyamide. Although reverse osmosis membranes are widely used, the structure of the current reverse osmosis membrane results in lo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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