http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114177786-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cc82d4dc075e4f2e97bc7b0b54760278 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A20-131 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-48 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0002 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 |
| filingDate | 2021-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1756f611b31b14e86c0545316ccfa734 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_090057fcc0d0edcedf1f5a20f2da9211 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2c6bd45d56089b46f9734a6fbfe0406 |
| publicationDate | 2022-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114177786-A |
| titleOfInvention | A kind of preparation method of multilayer polyamide composite reverse osmosis membrane |
| abstract | In the present invention and a method for preparing a multi-layer polyamide composite reverse osmosis membrane, polyvinyl alcohol or polyvinyl pyrrolidone is added to the polysulfone membrane, and at the same time, the dopamine solution is filtered on the polysulfone membrane by means of pressing, and the dopamine solution reacts The polydopamine layer is formed on the surface of the membrane and in the pores of the membrane, and then the base membrane with the polydopamine layer is immersed in the low-concentration aqueous phase solution and the oil phase solution successively. After the phase immersion, there are still some amine groups in the polydopamine layer on the surface of the membrane. The amine groups can react with the acid chloride of the oil phase to form an amide bond, forming an interspersed structure, which can increase the relationship between the polydopamine layer and the membrane. Contacts of polysulfone-based membrane layers. In addition, a polydopamine layer and a polyamide structure are formed in the pores of the porous base membrane, which increases the membrane flux while increasing the membrane retention rate. Using glutaraldehyde cross-linked chitosan complexed with silver as the polyamide protective layer, because the surface of chitosan has many hydroxyl groups and amino groups, it can defend against chlorine attack and increase the chlorine resistance of the film, and because silver itself has its own The antibacterial properties of the membrane increase the antibacterial properties of the membrane. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114917776-A |
| priorityDate | 2021-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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